Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > TBI
Register Forgot Password?

TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 11-17-2006, 09:51 PM   #51
Senior Member
 
dwillis's Avatar
 
Join Date: May 2005
Location: Beech Bluff,TN
Posts: 751
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08

Classifieds Rating: (6)
Quote:
Originally Posted by Fast355 View Post
The power steering pressure switch is used with an anti-stall routine in the 8746 and the IAT is used for a little more timing advance in cooler weather. The truck 7747 has some advantages of its own. I would keep the 7747 for a while, then switch to the newer style PCM.

This is one of the things that can be done with the PCM.

http://www.youtube.com/watch?v=7nVQePIYzhI

http://www.youtube.com/watch?v=c4CY3...elated&search=
but can I just plug it into my computer harness and go?
is that a video of you what is that in, a van thats pretty cool man...
dwillis is offline vBGarage Page   Reply With Quote
Old 11-17-2006, 09:58 PM   #52
Supreme Member
 
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 6,957
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears

Classifieds Rating: (2)
Quote:
Originally Posted by dwillis View Post
but can I just plug it into my computer harness and go?
is that a video of you what is that in, a van thats pretty cool man...
No it is not a direct swap. You have to repin your harness to the newer connectors. All you have to do is remove the little pins from the connectors and put them into the corresponding new connector location.

That video is of my G20 Van. 350 TBI, 85MM GM MAF sensor, 1995 "427" PCM.

Here is a thread with alot more information on it.

http://www.thirdgen.org/techboard/tb...6197427-a.html (PCM Swap (16197427))
Fast355 is offline vBGarage Page   Reply With Quote
Old 11-20-2006, 11:19 PM   #53
Junior Member
 
Join Date: Nov 2006
Location: Cincinnati
Posts: 1

Classifieds Rating: (0)
Newbie with 350 question

Newbie here.

I've only read some of the posts. My son and I just bought a 86 Z with TPI and 305/auto. The engine is knocking and is waiting to be buried with the bad gas in the tank.

We want to swap it for the 350. I used to own a 86 IROC. Man I wanted to put a big block in that car!

I read your post and have a few questions:

What 350 is best? Is one year, car or truck best, or what should be avoided?

What about a replacement 350 cam to go with the auto trans.? Crane PowerMax 2050?

Can you take all of the pollution sh&% off? Or should that go back on for the injection system or something?

I'm a little rusty. I used to build 396, 400 and 455s before I had kids. My sons got me back into it.

Thanks
MotorHD is offline vBGarage Page   Reply With Quote
Old 11-20-2006, 11:29 PM   #54
Supreme Member
 
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 6,957
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears

Classifieds Rating: (2)
Quote:
Originally Posted by MotorHD View Post
Newbie here.

I've only read some of the posts. My son and I just bought a 86 Z with TPI and 305/auto. The engine is knocking and is waiting to be buried with the bad gas in the tank.

We want to swap it for the 350. I used to own a 86 IROC. Man I wanted to put a big block in that car!

I read your post and have a few questions:

What 350 is best? Is one year, car or truck best, or what should be avoided?

What about a replacement 350 cam to go with the auto trans.? Crane PowerMax 2050?

Can you take all of the pollution sh&% off? Or should that go back on for the injection system or something?

I'm a little rusty. I used to build 396, 400 and 455s before I had kids. My sons got me back into it.

Thanks

Any 350 from 1973-1986 or so should be avoided if you are looking to use the stock heads, etc. The "best" engine to use would be a 1996-2002 Vortec 350. It has the great flowing "Vortec" heads, a Factory Roller camshaft, sometimes 4 bolt mains, Powdered Metal connecting rods that are stronger than the old "PINK" rods, Cast Aluminum pistons with a slight dish that give 9.4:1 compression with 64 cc chambers. Etc.

This is Biased toward a TBI buildup, but most of the same basic "Vortec" info carries across to the TPI. Just keep in mind with TPI you have to use a Vortec specific lower intake and a 350 specific knock sensor for your year TPI car.

http://www.thirdgen.org/techboard/tb...i-buildup.html (BUDGET TBI BUILDUP)
Fast355 is offline vBGarage Page   Reply With Quote
Old 11-27-2006, 01:09 AM   #55
Member
 
1991ON20's's Avatar
 
Join Date: May 2006
Location: west jordan,UtT
Posts: 172
Car: 91 RS, t-topped, man trans.
Engine: 350cid 350Hp crate motor
Transmission: t5 with new stock clutch and parts
Axle/Gears: 3.08 stock -RS

Classifieds Rating: (0)
anybody live in the salt lake city area that will tune my 91RS 350 swap for cash. OR -->for all u others that wanna come to slc....im an airline employee offering a buddy pass round trip of course to slc....i just want my car tuned right! its hard to trust people that r just in it to make a buck or folks that provide a "quick fix."
this is for real....im not bullshi*ting!
i can't afford to blow my motor...the wife will flip!

airline service will b on delta/delta connection.......bring the eqiupment and u can be out the very next day...or even the same day!
email me

Last edited by 1991ON20's; 11-27-2006 at 01:13 AM.
1991ON20's is offline vBGarage Page   Reply With Quote
Old 12-14-2006, 06:32 PM   #56
Junior Member
 
K-dawg's Avatar
 
Join Date: Dec 2006
Posts: 43
Car: 94Chevy s10, camaro is soon to come
Engine: 4.3L TBI Vortec
Transmission: 5 speed manual
Axle/Gears: I believe it's a 3.55 possi

Classifieds Rating: (0)
ok, I don't know if anyone else has asked this yet, but I'm looking into doing an engine swap very simaller to this one on my Blown up 92RS, will the intake bolt up to a pre vortec formerly carborated motor if not where can I get a motor that will work for this swap please let me see some links and prices.
K-dawg is offline vBGarage Page   Reply With Quote
Old 12-14-2006, 07:10 PM   #57
Senior Member
 
dwillis's Avatar
 
Join Date: May 2005
Location: Beech Bluff,TN
Posts: 751
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08

Classifieds Rating: (6)
Quote:
Originally Posted by K-dawg View Post
ok, I don't know if anyone else has asked this yet, but I'm looking into doing an engine swap very simaller to this one on my Blown up 92RS, will the intake bolt up to a pre vortec formerly carborated motor if not where can I get a motor that will work for this swap please let me see some links and prices.
You can make it bolt up by drilling the holes in the intake to fit the older block....but the best thing to do is just use an aftermarket intake for a carbbed engine..and use an adapter plate to convert it from carb to tbi.....That is if you have a tbi engine
What does it have in it
dwillis is offline vBGarage Page   Reply With Quote
Old 12-14-2006, 07:55 PM   #58
Junior Member
 
K-dawg's Avatar
 
Join Date: Dec 2006
Posts: 43
Car: 94Chevy s10, camaro is soon to come
Engine: 4.3L TBI Vortec
Transmission: 5 speed manual
Axle/Gears: I believe it's a 3.55 possi

Classifieds Rating: (0)
It's got a TBI 305, I would also like to know where I can find a motor that WILL actually bolt to the list of parts given in the 1st post.

Last edited by K-dawg; 12-14-2006 at 08:06 PM. Reason: Left out info.
K-dawg is offline vBGarage Page   Reply With Quote
Old 12-14-2006, 10:05 PM   #59
Supreme Member
 
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 6,957
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears

Classifieds Rating: (2)
Quote:
Originally Posted by K-dawg View Post
It's got a TBI 305, I would also like to know where I can find a motor that WILL actually bolt to the list of parts given in the 1st post.
1996-1999 OBS Chevy/GMC Truck, Suburban, Tahoe, Yukon.

1996-2002 Fullsize Chevy/GMC Van, Express, Savana

1996-2003 P-series vans

1996-2005 C60 Trucks
Fast355 is offline vBGarage Page   Reply With Quote
Old 12-27-2006, 11:46 AM   #60
Junior Member
 
Join Date: Dec 2006
Posts: 23

Classifieds Rating: (0)
90 Camaro 305 TBI swap to 350 TBI. I can sure use some words of wisdom,here!

Hello Fella's,
Boy am I glad that I registered with Third Gen.org! I could really use some guidence as I am swapping my High Output 305 TBI for a 350 TBI with Twin Turbos.
I was just going to slightly modify and chrome up my 305, but upon removing the Intake Manifold, I noticed that my 305 had seen better days. So instead of rebuilding a 305, I bought a freshly rebuilt 350 L98 Short Block. I had already purchased an Edelbrock Performer Intake (for TBI, of course), a Holly 670 CFM Throttle body, Headers, all the chrome goodies and an off brand computer (performance) chip. Those were bought for my 305, but now I have this L98 350 and I still want to go TBI..
The 350 is mostly stock with Speed Pro Hypereutectic aluminum Pistons and the L98 roller cam. I just purchased 350 TBI Heads off of Ebay that I will put on the engine.

My questions are (and I am truley thankful for anyone's help):
1. will the ecm from my 305 work with the 350?
2. what will a performance enhancing chip do for that ecm?
3. what else should I change to accomodate the 350?
4. I bought a twin turbo for 82-92 small block Camaros. I didn't get any instructions with them. I was told that I needed forged pistons to accomodate the Turbo, but then I was told that the Speed Pro Hypereutectic Pistons would work fine. Which is true?

I am just a daddy that trying to give myself, my wife and my kids something to take to car shows, put around in, and if things work out O.K- maybe even take to the local race track. The turbo was a last minute decision that I went with just to do something unexpected (plus it was affordable). Can anyone help me out? All advice is greatly appreciated!
McKinnon9515 is offline vBGarage Page   Reply With Quote
Old 12-28-2006, 11:05 AM   #61
Member
 
Join Date: Sep 2006
Location: alabama
Posts: 237
Car: 92 camaro rs
Engine: 350 tbi/416's/comp xe268
Transmission: 700r4
Axle/Gears: 3.42

Classifieds Rating: (0)
Send a message via AIM to Colts45s
whoooh dude 1 at a time lol. well lets see what we got here
1. yes if its an 8746 ecm.
2.nothing unless you get into proming your own chips. Besides mail order chips just guess when you would be tuning based on facts. you might squeeze by with a chip out of a caprice.
3.although every1 says esc lol all part stores have the pn d140 for 305 and 350 lol prolly get shot for sayin that, injectors, knock sensor, and misc stuff
4. kool beans wish you luck on turbo
Colts45s is offline vBGarage Page   Reply With Quote
Old 12-28-2006, 11:19 AM   #62
Junior Member
 
Join Date: Dec 2006
Posts: 23

Classifieds Rating: (0)
Thank You Colts45s,
When you get into the TBI's, it gets really confusing. I'm going to look into the turbo that I just bought off of ebay. It says its for 82-92 camaros with small blocks, but I wonder what kind of extra horsepower it will really put out. I need to find out if I need to change my Hypereutectic Pistons and possibly the hydraulic cam too. I greatly appreciate any advice!
McKinnon9515 is offline vBGarage Page   Reply With Quote
Old 12-28-2006, 05:49 PM   #63
Supreme Member
 
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 6,957
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears

Classifieds Rating: (2)
Quote:
Originally Posted by Colts45s View Post
whoooh dude 1 at a time lol. well lets see what we got here
1. yes if its an 8746 ecm.
2.nothing unless you get into proming your own chips. Besides mail order chips just guess when you would be tuning based on facts. you might squeeze by with a chip out of a caprice.
3.although every1 says esc lol all part stores have the pn d140 for 305 and 350 lol prolly get shot for sayin that, injectors, knock sensor, and misc stuff

The ESC modules ARE interchangeable between 305 and 350. One will work equally as well as the other.

When you start playing the numbers game, the late model Vortec 305 has the same knock sensor as a LT4 Corvette.
Fast355 is offline vBGarage Page   Reply With Quote
Old 01-05-2007, 09:04 AM   #64
Junior Member
 
Join Date: Dec 2006
Posts: 23

Classifieds Rating: (0)
Hey Fellas, I (being a Mechanical Vigin) went and bought a Twin Turbo Kit for my L98 350 TBI. I also bought a New Nitrous Works Kit for TBI (it's complete with bottle full and everything else needed). Anyway, I learned that they do the same thing, basically, and now I want to try and straighten some things out. Is anyone interested in trading a Newly Rebuilt L98 350 Short Block with Aluminum Hypereutectic Pistons, Pacesetter Headers and Y- Pipe (their New), and a New Nitrous Works Kit for TBI- for an engine with Forged Pistons and the ability to handle the turbo that I bought?

I have Pictures if anyone is interested. I live in Warren, Ohio. Any advice is greatly appreciated also.
McKinnon9515 is offline vBGarage Page   Reply With Quote
Old 01-06-2007, 09:37 AM   #65
Member
 
Join Date: Oct 2006
Location: Surprise,AZ
Posts: 329
Car: 91 rs
Engine: 305tbi
Transmission: 700r4
Axle/Gears: 3.27 9bolt

Classifieds Rating: (0)
how many injectors do you need? isnt it 8
91 camaro rs is offline vBGarage Page   Reply With Quote
Old 01-07-2007, 01:35 PM   #66
Supreme Member
 
Join Date: Feb 2002
Location: Buckhannon, WV
Posts: 2,663
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears

Classifieds Rating: (0)

Wrong thread and forum guys, this needs to go in the "FOR SALE" forum.

Moderators please clean this up, this thread is getting difficult to read through.
BMmonteSS is offline vBGarage Page   Reply With Quote
Old 01-08-2007, 12:53 PM   #67
Junior Member
 
Join Date: Dec 2006
Posts: 23

Classifieds Rating: (0)
Hello Gentlemen! My apologies, I'm very new to this forum and didn't realize there is a items for sale, forum. Again I apologize!
I made a mistake buying the twin turbo kit, because I found out that it's suited for engines that run between 425 and 525 horsepower.. Hey, my engine doesn't have anything near that, yet! I'm just going to build a 383 stroker with TBI and play around from there.. Any advise??
McKinnon9515 is offline vBGarage Page   Reply With Quote
Old 01-13-2007, 05:18 PM   #68
Junior Member
 
Whips89RS's Avatar
 
Join Date: Aug 2006
Location: Hyde Park, MA
Posts: 81
Car: 72 Malibu, 89 RS & 04 Z71 extended
Engine: (2)350's & 327
Transmission: auto/T5
Axle/Gears: 4:11, 2:73 & 3:73

Classifieds Rating: (0)
???? maybe???

What if I get all the stuff, computer, throttle body, knock sensor etc from a blazer with a 350. Will that work?
Whips89RS is offline vBGarage Page   Reply With Quote
Old 01-21-2007, 09:02 AM   #69
Senior Member
 
rebel1222's Avatar
 
Join Date: Aug 2006
Location: Dallas, Georgia
Posts: 295
Car: Looking

Classifieds Rating: (0)
Is there a diagram or picture that shows how all the vacuum lines are to be connected, namely the map sensor?
rebel1222 is offline vBGarage Page   Reply With Quote
Old 01-21-2007, 10:34 AM   #70
Supreme Member
 
Join Date: Feb 2002
Location: Buckhannon, WV
Posts: 2,663
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears

Classifieds Rating: (0)

For the love of god guys, this is a mess!! This thread was ment to provide FACTS about swaping a 305 for a 350. It was not ment to ask questions in or discuss your project. I understand that some of you are new to the site and don't quite know how to find what you're looking for. The proper way to find information is to search, then if you can't find what you are looking for then post a NEW thread asking your question.
BMmonteSS is offline vBGarage Page   Reply With Quote
Old 01-29-2007, 10:16 PM   #71
Senior Member
 
dwillis's Avatar
 
Join Date: May 2005
Location: Beech Bluff,TN
Posts: 751
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08

Classifieds Rating: (6)
Sorry dude!I'll stop asking questions.lol
dwillis is offline vBGarage Page   Reply With Quote
Old 02-03-2007, 07:16 AM   #72
Supreme Member
 
Street Lethal's Avatar
 
Join Date: Jul 2003
Location: New Jersey
Posts: 7,300
Car: 1990 GTA
Engine: 5.0L Turbo V8
Transmission: 700R4

Classifieds Rating: (12)

Quote:
Originally Posted by BMmonteSS
For the love of god guys, this is a mess!!
LMAO!!!!
Street Lethal is offline vBGarage Page   Reply With Quote
Old 02-09-2007, 11:10 PM   #73
Junior Member
 
Join Date: Feb 2007
Posts: 1

Classifieds Rating: (0)
305 350 swap

hey could you please tell me where the esc is located on the 93 silverado.
because i also did the 350 305 swap. the esc on my truck isnt located by the throttle body like all of the other trucks i looked at. please comment back
93silverado is offline vBGarage Page   Reply With Quote
Old 02-10-2007, 07:35 PM   #74
Supreme Member
 
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 6,957
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears

Classifieds Rating: (2)
Quote:
Originally Posted by 93silverado View Post
hey could you please tell me where the esc is located on the 93 silverado.
because i also did the 350 305 swap. the esc on my truck isnt located by the throttle body like all of the other trucks i looked at. please comment back
Does not have one. The ESC circuitry is in the Memcal inside the PCM.
Fast355 is offline vBGarage Page   Reply With Quote
Old 04-20-2007, 07:24 AM   #75
Supreme Member
 
Join Date: Dec 2005
Location: Macon, GA
Posts: 6,063
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70

Classifieds Rating: (3)
Send a message via AIM to InfernalVortex
Re: How to: 305 To 350 swap....everything you need to know

http://www.diy-efi.org/gmecm/compone...injectors.html

This says stock 305 TBI injectors are 40/lbs an hour... You say they're 55.

WHo is right?
InfernalVortex is online now vBGarage Page   Reply With Quote
Old 04-21-2007, 02:42 AM   #76
Junior Member
 
Join Date: Apr 2007
Posts: 3

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

could it just be any chevy caprice ecu box, and how do you tell if it is a 746' ecu, and do it have to be the police ecu box as well as injectors?also what if my car is not running lean and i've been driving it with the 350 for two months?

Last edited by CSTYLE; 04-21-2007 at 02:43 AM. Reason: spelling
CSTYLE is offline vBGarage Page   Reply With Quote
Old 04-21-2007, 06:50 AM   #77
Supreme Member
 
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 6,957
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears

Classifieds Rating: (2)
Re: How to: 305 To 350 swap....everything you need to know

Quote:
Originally Posted by InfernalVortex View Post
http://www.diy-efi.org/gmecm/compone...injectors.html

This says stock 305 TBI injectors are 40/lbs an hour... You say they're 55.

WHo is right?
They are without a doubt 55 lb/hr. Regular old 350 injectors are 61 lbs/hr. Finally, even the 4.3 V6 has 46# injectors.
Fast355 is offline vBGarage Page   Reply With Quote
Old 04-21-2007, 12:53 PM   #78
Member
 
Join Date: Apr 2007
Location: Olathe, KS
Posts: 201
Car: 1984 Camaro Z28
Engine: 357 SBC
Transmission: 700R4
Axle/Gears: 3.73

Classifieds Rating: (2)
Re: How to: 305 To 350 swap....everything you need to know

Got a quick question. I am doing a 350 swap in my 3rd gen z28. It is carbed what will have to be changed will I need to flash the ECM?
----------
Got a quick question. I am doing a 350 swap in my 3rd gen z28. It is carbed what will have to be changed will I need to flash the ECM?

Last edited by OS3Fleming; 04-21-2007 at 12:54 PM. Reason: Automerged Doublepost
OS3Fleming is offline vBGarage Page   Reply With Quote
Old 04-30-2007, 07:26 PM   #79
Junior Member
 
Join Date: Apr 2007
Posts: 1

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

What injectors/PCM would be needed for swapping in an old school 327? Currenly its running on the stock 305 setup, but not very well.
dbb313 is offline vBGarage Page   Reply With Quote
Old 05-04-2007, 06:16 PM   #80
Junior Member
 
Join Date: May 2007
Posts: 7

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

Now for that 350 chip . Could I just swap a Prom into my 305 ecm or would I just be better getting a 350 ecm all together ? I found that 350 prom threw autozone . But I am not sure . I am just trying to do it the easiest and fastest way . I got to race this weekend . HELP
sniper94z is offline vBGarage Page   Reply With Quote
Old 06-02-2007, 12:38 AM   #81
Senior Member
 
Join Date: Jun 2005
Location: Altus, Ok
Posts: 984
Car: 91camaro rs,06cobalt ss/sc
Engine: 5.7Lcarb,2.0L supercharged
Transmission: 700-r4, 5 speed
Axle/Gears: strange 3.73's

Classifieds Rating: (1)
Send a message via AIM to 91 camaro racer
Re: How to: 305 To 350 swap....everything you need to know

what would the part number be for the caprice 350 tbi computer?
91 camaro racer is offline vBGarage Page   Reply With Quote
Old 06-04-2007, 08:52 PM   #82
Junior Member
 
Join Date: Jun 2007
Posts: 13

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

I'm new to this forum and thread. What great information you guys have here. I just picked up an 88 305 TBI Camaro with a siezed engine. I can't bring myself to put a 305 back in. Used 350's around here are going for alot of money. I have a contact at a GM dealership and I can get employee pricing. The question is, what would be a good crate 350 to start with? I don't have tuning skills yet. I want something I can either buy a prom for or get burned easily. I was thinking either the 87 and later stock replacement with roller cam or the 290hp from the performance parts catalog. Any comments? I need help!!!! Thanks.

Chad
ccracin is offline vBGarage Page   Reply With Quote
Old 06-07-2007, 08:48 PM   #83
Junior Member
 
Join Date: Jun 2007
Posts: 13

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

I really need some help. I'm ready to get an engine. Thanks in advance for any comments.
ccracin is offline vBGarage Page   Reply With Quote
Old 06-08-2007, 02:54 PM   #84
Senior Member
 
dwillis's Avatar
 
Join Date: May 2005
Location: Beech Bluff,TN
Posts: 751
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08

Classifieds Rating: (6)
Re: How to: 305 To 350 swap....everything you need to know

I'm doin my swap right now...it goin good so far...

Last edited by dwillis; 08-31-2008 at 10:18 PM.
dwillis is offline vBGarage Page   Reply With Quote
Old 06-08-2007, 05:51 PM   #85
Junior Member
 
Join Date: Jun 2007
Posts: 13

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

Quote:
Originally Posted by ccracin View Post
I really need some help. I'm ready to get an engine. Thanks in advance for any comments.
Guys, I promise I searched and didn't find much reference to crates except for the ZZ4. I don't have the skills to tune for that yet. I'd like to get a crate engine that a tune exists for to start. Little Help??
ccracin is offline vBGarage Page   Reply With Quote
Old 06-08-2007, 07:00 PM   #86
Senior Member
 
dwillis's Avatar
 
Join Date: May 2005
Location: Beech Bluff,TN
Posts: 751
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08

Classifieds Rating: (6)
Re: How to: 305 To 350 swap....everything you need to know

Quote:
Originally Posted by ccracin View Post
Guys, I promise I searched and didn't find much reference to crates except for the ZZ4. I don't have the skills to tune for that yet. I'd like to get a crate engine that a tune exists for to start. Little Help??
I dont know alot about the tuning end of it but all I did was buy a 350 out of a '93 truck and change the heads and cam....and of corse all the preventative maintenance stuff....
But you can pretty much buy any 350 and have a chip burned for it as long as you know the specs on the engine and what gear you have in the rear(if your going back tbi)if not then you need not worry about tuning..
I myself and a few of my friends have had great luck with Howell engine development( www.howellefi.com )...but theres also www.tbichips.com ..
they can burn you a chip to get you going with a few mods and they can walk you thru that...oh and if you end up needing a computer I have one you can get its a 7747 out of a truck if they say you need that....
also if you get a complete engine (intake to oil pan) dont change an intake out just get a 4bbl to tbi adapter plate like I have on mine in the pic above..
and you will need a tbi from a 5.7 litre truck or just buy a tbi for it from somewhere...
I'm sure I've missed alot and there is more to it than that but just keep searching on the net and you find what you need....anyone feel free to correct me if I've mislead....Dave
dwillis is offline vBGarage Page   Reply With Quote
Old 06-08-2007, 08:34 PM   #87
Junior Member
 
Join Date: Jun 2007
Posts: 13

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

Thanks for the reply again Dave. I have the complete 88 305 in the car. It is in a bit of a siezed state at the moment. GM has this motor that I can get pretty cheap.

ENGLM1LS9
Click the image to open in full size.
Part #
10067353

Engine Name: 350 LM1
Horsepower: 249 HP @ 5,000 RPM
Torque: 304 Ft/Lbs @ 3,500 RPM
Compression Ratio: 8.50 to 1
Block: 4 Bolt, 2 Piece Rear Seal, 4.000 Bore
Crankshaft: Cast Nodular 3.480 Stroke
Heads: Cast Iron, 76cc
Valves: 1.940 / 1.500
Camshaft lift: 0.390 / 0.410 Hydraulic
Duration @ 0.050: 195 / 202

The cam is not radical and it has decent power numbers at a reasonable 5000rpm. I am going to try to get a 746 ECM this week coming. I was hoping to just change my injectors, fuel pump, ESC module, and knock sensor. I was going to use the 305 intake and throttle body. I was hoping there might be an existing .bin that would run this engine. I am willing to buy the burner and chips. my goal was to get a .bin that would be drivable so that I could run the car and then learn the tuning part over time. Does this sound reasonable with this engine? GM also has part#12568758 which they list as an 86-95 L05 that is a few hundred dollars more than the one above. I just can't find details on it. Anyway that's where I'm at. Any comments would be great.

Thanks,

Chad
ccracin is offline vBGarage Page   Reply With Quote
Old 06-22-2007, 11:23 AM   #88
Junior Member
 
Fratley_1's Avatar
 
Join Date: Aug 2006
Posts: 10
Car: 1988 Camaro
Engine: 305 TBI
Transmission: 700r4
Axle/Gears: stock 2.73 open diff

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

this is great. i just found a 350 tbi from an 87 caprice cop car with the ecm and harness. now all i have to do is follow this guide and i should be good.
Fratley_1 is offline vBGarage Page   Reply With Quote
Old 06-27-2007, 07:21 PM   #89
Junior Member
 
Join Date: May 2007
Posts: 2

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

Thanks in advance for your help!
----------

Last edited by adrianhix; 06-27-2007 at 07:28 PM. Reason: Automerged Doublepost
adrianhix is offline vBGarage Page   Reply With Quote
Old 06-28-2007, 08:07 PM   #90
Supreme Member
 
Join Date: Feb 2002
Location: Buckhannon, WV
Posts: 2,663
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears

Classifieds Rating: (0)

Re: How to: 305 To 350 swap....everything you need to know

I would just like to add that mail order tunes are a wast of money in that you can not "build" a chip from a spec sheet. I don't care how good you are it just can't be done. The 747 has less features and even uses less sensors that the 746 It will swap in place of the 746 but there is NO reason to backdate.

If you are swapping in a stock motor and don't want to tune get a stock caprice chip. If you want to mod your motor learn to burn your own chips.

Last edited by BMmonteSS; 06-28-2007 at 08:11 PM.
BMmonteSS is offline vBGarage Page   Reply With Quote
Old 07-21-2007, 02:36 PM   #91
Junior Member
 
Join Date: Jul 2007
Posts: 73

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

I think I have everything but the 350 ESC module, can someone explain what this is so I can try to find it.
----------
What is the ESC module?

Last edited by 69442DREAMCAR; 07-21-2007 at 02:40 PM. Reason: Automerged Doublepost
69442DREAMCAR is offline vBGarage Page   Reply With Quote
Old 07-21-2007, 03:09 PM   #92
Supreme Member
 
Street Lethal's Avatar
 
Join Date: Jul 2003
Location: New Jersey
Posts: 7,300
Car: 1990 GTA
Engine: 5.0L Turbo V8
Transmission: 700R4

Classifieds Rating: (12)

Re: How to: 305 To 350 swap....everything you need to know

Electronic Spark Control....
__________________
'90 Trans Am GTA: Worked 305-TPI, EBL-P4, w/T-72 Turbo Charger...

'96 Chevy Corvette: Worked 350-LT1, FAST-XFI, w/D1SC Procharger...
Street Lethal is offline vBGarage Page   Reply With Quote
Old 07-22-2007, 01:08 PM   #93
Junior Member
 
Join Date: Jul 2006
Location: mn
Posts: 47
Car: 1991rs camaro/intrigue 3.5 dohc mfi
Engine: 305
Transmission: 700r
Axle/Gears: 3.42

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

Quote:
Originally Posted by Fast355 View Post
Yep

Early 9C1 injectors are 65 lb/hr. The later bubble bodies are 68 lb/hr. Some 1996 G-series vans had 72 lb/hr injectors in their 350 TBI-Vortecs.

Now I just need to send emails out to Extremefi! They are giving out ALOT of mis-information on their ebay sales. I called out the owner on the fact that he is calling 4.3 injectors "UPGRADES" from 305 injectors when in fact they flow 10 lbs/hr less EACH and he ignored me.



Here is another where they are saying that the 5235206 injectors are 55 lb/hr. I have personally flow benched several sets that were all right at 61 lb/hr each.



There is no way that a 305 could even make its advertised HP with 40 lb/hr injectors in it.
wouldnt it be eiser to go with a holly 750 double pumper and a msd 1 wire ignition dont need your computer that way
kcstoltzmn1 is offline vBGarage Page   Reply With Quote
Old 07-22-2007, 01:49 PM   #94
Supreme Member
 
Join Date: Feb 2002
Location: Buckhannon, WV
Posts: 2,663
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears

Classifieds Rating: (0)

Re: How to: 305 To 350 swap....everything you need to know

You're obviously lost, as this is the TBI board. We are interested in keeping the TBI and tuning it to a higher level of performance. So, to answer your question, yes it would be easier to swap to a holley, but we want the benefits that FI has to offer. So please take your "swap to holley" suggestion over to the carb board, it will be appreciated over there.
BMmonteSS is offline vBGarage Page   Reply With Quote
Old 07-22-2007, 01:54 PM   #95
Junior Member
 
Join Date: Jul 2006
Location: mn
Posts: 47
Car: 1991rs camaro/intrigue 3.5 dohc mfi
Engine: 305
Transmission: 700r
Axle/Gears: 3.42

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

sry bout that i did have 30 or 40 tbi carbs 350 and 305 auto and clutch but i scrapped them for metal i thought e1 was swicthing
kcstoltzmn1 is offline vBGarage Page   Reply With Quote
Old 07-23-2007, 10:26 PM   #96
Junior Member
 
Join Date: Sep 2006
Posts: 3

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

Like others, I'm in the midst of having my 91 RS converted from the 305 (A4)to a *gulp* 383 version from Five Star Engines in Phoenix. They will install the new engine along with a TBI from an 89 truck and new shorties from edelbrock. But what I read above is that I'll have to more than reprogram the chip, but get an entire new ECM. Since this will be an all inclusive engine swap, not just the short block, but all plumbing as well, beside the chip and ECM, will I need to have them replace the fuel pump as well? What about the ignition?
Old Gen'r is offline vBGarage Page   Reply With Quote
Old 07-24-2007, 08:10 PM   #97
Supreme Member
 
Join Date: Feb 2002
Location: Buckhannon, WV
Posts: 2,663
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears

Classifieds Rating: (0)

Re: How to: 305 To 350 swap....everything you need to know

No need for a new ecm, you'll just need to reprogram the chip to fit your engine. See the "free tune" thread here in the stickies for a step by step guide to getting started burning your own chips.
BMmonteSS is offline vBGarage Page   Reply With Quote
Old 08-14-2007, 11:48 PM   #98
Member
 
Join Date: Jun 2006
Location: Summerdale, AL
Posts: 373
Car: 92 Camaro
Engine: El Tee Juan
Transmission: Tee five six
Axle/Gears: 10 Bolt 4:10's

Classifieds Rating: (8)
Send a message via AIM to BrOdBaNd Send a message via Yahoo to BrOdBaNd
Re: How to: 305 To 350 swap....everything you need to know

I am almost done with my 305-350 swap... I went from a 305 tbi to a 350 tbi, the 350 came out of a 1994 4x4 chevy truck... I mean, I have my car on jackstands just getting it completely ready to drive, and it fires up first time every start, i can rev it just fine, but since its on the stands, i cant feel how powerful it is lol. Ill post some pics as soon as im done, i was just wanting to know how much more powerful its going to feel driving it. Will i notice a difference? I have just been so curious since the day i got this motor, which was almost a month ago... Thanks
BrOdBaNd is offline vBGarage Page   Reply With Quote
Old 08-24-2007, 09:58 PM   #99
Junior Member
 
pandemic_ratio's Avatar
 
Join Date: Aug 2006
Location: Port st lucie Florida
Posts: 55
Car: 1992 RS Camaro
Engine: 350 small block V8
Transmission: icky automatic

Classifieds Rating: (0)
Re: How to: 305 To 350 swap....everything you need to know

im not sure where my esc is located in my 1992 rs camaro 25th anniversary editon. ive switched everything out but that module...anyone know where i can find it?
pandemic_ratio is offline vBGarage Page   Reply With Quote
Old 08-25-2007, 12:04 AM   #100
Supreme Member
 
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 6,957
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears

Classifieds Rating: (2)
Re: How to: 305 To 350 swap....everything you need to know

Quote:
Originally Posted by pandemic_ratio View Post
im not sure where my esc is located in my 1992 rs camaro 25th anniversary editon. ive switched everything out but that module...anyone know where i can find it?
The modules are the EXACT same, no need to switch them.
Fast355 is offline vBGarage Page   Reply With Quote
Old 08-25-2007, 12:04 AM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > TBI

Tags
1989, 305, 350, 5235206, camaro, chevrolet, dallas, engine, exploded, injectors, swap, tbi, tpi, trans, tx, view
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 09:38 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.5.2
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details