Search



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

Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

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 08-07-2012, 11:47 AM   #1
Member
 
Join Date: Jun 2005
Location: Brooklyn NY
Posts: 192
Car: 1985 iroc
Engine: 5.0
Transmission: auto

Classifieds Rating: (1)
305 tpi to carbed 350

I have a 1985 iroc with the 305 tpi. a buddy has a chevelle with a built 350 carbed that he wants to sell me. 4 bolt, 1 piece rms, forged pistons. says the dyno was at 325hp. my tpi is bone stock. should i do the swap? i know many guys on here love the tpi for tuninng purposes, but i am more of a NON-computer guy, and would rather the 350 carbed. what are the pros and cons? I look at it that i would have to put in some nice coin to make my 305 make 325 hp at the wheels....help!
Mlanzo is offline vBGarage Page   Reply With Quote
Old 08-07-2012, 12:18 PM   #2
Junior Member
 
Join Date: Dec 2011
Location: Ky
Posts: 44
Car: 1985 IROC Z28
Engine: 355 aluminum heads, comp 294 magnum
Transmission: 700r4 with B&M Mega Shifter
Axle/Gears: Motive 4.10's

Classifieds Rating: (0)
Re: 305 tpi to carbed 350

I did the same swap on my car, which is an 85 Iroc. The carb over the Tuned Port is much better in my opinion. When I dropped the 350 in my car which is making just around 310 at the flywheel the car got more driveable in my opinion. Honestly i can say that I am getting better gas mileage with the carb over the tpi. It was worth the work into it. you'll be much happier with a 350
i-rocz/28 is offline vBGarage Page   Reply With Quote
Old 08-07-2012, 12:23 PM   #3
Member
 
Join Date: Jun 2005
Location: Brooklyn NY
Posts: 192
Car: 1985 iroc
Engine: 5.0
Transmission: auto

Classifieds Rating: (1)
Re: 305 tpi to carbed 350

Quote:
Originally Posted by i-rocz/28 View Post
I did the same swap on my car, which is an 85 Iroc. The carb over the Tuned Port is much better in my opinion. When I dropped the 350 in my car which is making just around 310 at the flywheel the car got more driveable in my opinion. Honestly i can say that I am getting better gas mileage with the carb over the tpi. It was worth the work into it. you'll be much happier with a 350
Like i said this 350 is a worked motor, and my car will def boogie if I get it. I have the complete suspension done as well, and am dying to see how well it handles with some real power.

I just wanted to hear some pro-tpi comments, if applicable.
Mlanzo is offline vBGarage Page   Reply With Quote
Old 08-07-2012, 12:24 PM   #4
Junior Member
 
Join Date: Jul 2012
Posts: 19

Classifieds Rating: (0)
Re: 305 tpi to carbed 350

What is the estimated cost of swapping a 350 into a 1988 Iroc 305 with a 5-speed transmission?
deity4uu is offline vBGarage Page   Reply With Quote
Old 08-07-2012, 12:25 PM   #5
Member
 
Join Date: Jun 2005
Location: Brooklyn NY
Posts: 192
Car: 1985 iroc
Engine: 5.0
Transmission: auto

Classifieds Rating: (1)
Re: 305 tpi to carbed 350

Quote:
Originally Posted by deity4uu View Post
What is the estimated cost of swapping a 350 into a 1988 Iroc 305 with a 5-speed transmission?
you just hijacked my thread. cost as far as what? cost of a 350? cost of install?
Mlanzo is offline vBGarage Page   Reply With Quote
Old 08-07-2012, 12:35 PM   #6
Junior Member
 
Join Date: Dec 2011
Location: Ky
Posts: 44
Car: 1985 IROC Z28
Engine: 355 aluminum heads, comp 294 magnum
Transmission: 700r4 with B&M Mega Shifter
Axle/Gears: Motive 4.10's

Classifieds Rating: (0)
Re: 305 tpi to carbed 350

Personally I think the TPI is junk lol. To have my enigine that I used for my car cost $1200 to build. This included, comp cam, crank, (used stock pistons and rods), all new bearings(crank and cam), high rise intake(used), brand new pioneer flywheel, and the basics. The motor i used was out of a 90 silverado 20,000 original miles (totaled lol). Like I said its dyno 310 at flywheel. Also had to buy an inline fuel pump for $50. Over all i maybe spent $1400 when all was done.
i-rocz/28 is offline vBGarage Page   Reply With Quote
Old 08-07-2012, 12:38 PM   #7
Member
 
Join Date: Jun 2005
Location: Brooklyn NY
Posts: 192
Car: 1985 iroc
Engine: 5.0
Transmission: auto

Classifieds Rating: (1)
Re: 305 tpi to carbed 350

Quote:
Originally Posted by i-rocz/28 View Post
Personally I think the TPI is junk lol.
Dunno if some members here will appreciate that comment. The TPI is a work of art actually and has many possibilities to make some power. MY issue is that I only have the 305. This is why i posted this thread. i wanna hear from experienced TPI guys, if I should stay or go!
Mlanzo is offline vBGarage Page   Reply With Quote
Old 08-07-2012, 01:41 PM   #8
Member
 
Join Date: Jun 2005
Location: Brooklyn NY
Posts: 192
Car: 1985 iroc
Engine: 5.0
Transmission: auto

Classifieds Rating: (1)
Re: 305 tpi to carbed 350

anyone?
Mlanzo is offline vBGarage Page   Reply With Quote
Old 08-07-2012, 05:45 PM   #9
Junior Member
 
Join Date: Dec 2011
Location: Ky
Posts: 44
Car: 1985 IROC Z28
Engine: 355 aluminum heads, comp 294 magnum
Transmission: 700r4 with B&M Mega Shifter
Axle/Gears: Motive 4.10's

Classifieds Rating: (0)
Re: 305 tpi to carbed 350

I say go for it. lol. best of luck!!
i-rocz/28 is offline vBGarage Page   Reply With Quote
Old 08-14-2012, 10:24 PM   #10
Junior Member
 
Join Date: Jul 2011
Posts: 18

Classifieds Rating: (0)
Re: 305 tpi to carbed 350

Honestly your going to put alot of money into just converting it over to tpi. You'll have to get the intake,injectors, probable a new harness and computer since it had a 305 the computers going to send a low amount of "burst" to the injectors not to mention the hassell with the emissions your check engine light will always be on. Its just alot simpler and its not like a carburetor is a real step down, NASCAR just switched to EFI so you can get great performance out of it if its well tuned. But if your willing to go thru it all and spend the money...then more power to you. Just my opinion
13Mgoff is offline vBGarage Page   Reply With Quote
Old 08-14-2012, 10:39 PM   #11
Member
 
Join Date: Apr 2004
Location: springtucky
Posts: 160
Car: 92 RS
Engine: 355 carbuerated
Transmission: Wrecked 700r4
Axle/Gears: B/W 9-bolt(SHREDDED), 4th gen 2.77

Classifieds Rating: (0)

Re: 305 tpi to carbed 350

You can can run the 350 with the 305 computer... it's been proven. I say do the swap. but leave the factory wiring in place so when you get tired of drivabilty issues with the carb you can RTS. you dont need to get a pump just get a pressure regulator with a return. just saw a thread on a pretty slick setup using a mallory...search is your friend!!! There is no uncharted territory on these cars. I say run the carb until you get sick of it and put the TPI back on with the proper size injectors and you'll never go back.
b_the_j is offline vBGarage Page   Reply With Quote
Old 08-14-2012, 10:39 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Engine Swap

Tags
171a, 1985, 305, 350, 3rd, body, cam, carb, carbed, comp, gen, iroc, speed, swap, tpi, written, z28
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 07:26 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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