well, I just found out this will be some sort of a nightmare to tune, or have a tune to even run properly. Im not a tuner at all, good computer background, thats it...

I need something to make my suburban run correctly, until I get into tuning myself...

its a l05 block with .30 over
vortec heads
tbi 350 unit, but changing to a 454 tbi
I know I need bigger injectors...


Im starting to wonder, will the TBI heads be easier to tune? or just as bad as the vortec to tune?

someone please PM me or email If you can help or tune.

 

What does the cam look like? I heard there are some issues running a 454 tbi on a 350 computer (IAC or something like that).
I'm no expert myself, but I know the cam has something to do with tuning. lol

Mike

 

https://www.thirdgen.org/forums/diy-...refresher.html

I run a 388 (4.060x3.75), Iron Eagles 2.02 heads, port matched performer (kinda small), 454 TBI w/ 454 Injectors, TPI fuel pump, Fuel Pressure Regulator....Tuned as the guide said. I ran 14's, but that is with base stock driveline, stock converter, and the cam/intake isn't a high end combo (but you just wait, i'm putting in a ZZ4 roller cam and a TP38 turbocharger w/ Holly blowcarb.

I tell you what man, it is a torque factory built for a big azz offroad suburban...Rust In Pieces burby

 

hey Mike, these are the exact cam specs...
http://store.summitracing.com/partde...2&autoview=sku

it worked wonders in my 350, but the engine died 3k miles after.. dead oil pump, no oil psi!

so I take it cam and lifters are still good.

my truck is a 1995 Suburban!
my other thread is here: https://www.thirdgen.org/forums/tbi/...oker-plus.html

 

yea, check my progress here:
https://www.thirdgen.org/forums/tbi/...oker-plus.html

but I cant wait to run my 383, I bet that 388 was a absolute BEAST!
so I will need a TPI fuel pump and adjustable fuel regulator?

Im not looking to racing it, just something dependable, that can snap your neck with torque! I will be using the s10 stall converter, to stall at 2600rpm, and my cam is a summit k1102 listed above. I heard its 1 of the better performers for the TBI! it sure as hell woke up my l05 when it was working after the swap! only has 3k on it!

I will follow that link you posted above, but I dont have any tools to begin. Please answer your PM

 

350HO cam pn(24502476)
112.5 LSA
212/222 dur .050
.435.i 460e (1.5 ratio)

K-1102
112 LSA
204/214 dur .050
.420i .442e (1.5 ratio)

I don't know jack about cams, but I bet you could go bigger with a 383 and vortec heads (with beehive springs)
ANyway, I bet it shouldn't be that hard to tune. I'm having decent results and I'm a cherry!!
I want to recommend the 750CFM small block tbi by xtremefi- I bought one and it's worked great. It's rebuilt and bored
to 50mm. I did a bunch of reading before I started and opted to skip tuning with a 7747 ecm and go straight to Rbob's EBL-
made things MUCH easier in terms of tuning, diagnostics, datalogging, etc. I'm not trying to push any products that are out there,
I'm just making suggestions.

Mike

 

That cam in a 383 will behave more tame than in a 350. With your '95 PCM which has much better code and hardware than the earlier TBI ECM's and a little due dilligence, you can have that engine purring like a kitten with little relative effort. That cam won't be difficult to tune at all, even with a bigger TBI and injectors and Vortec heads. Just calculate the injector constant correctly for the injectors and fuel pressure you will run and plug it in and change the cylinder volume constant and get started. Datalog everything and take lots of good notes on what works and what doesn't. If you were starting out tuning a setup with a big bumpstick, then you would have problems.

 

Dont be scared....LOL
GIT R DUN

Mike

 

thats the kind of encouragement is what I was looking for, and thanks for the information you just gave me about my 95 pcm. it looks like Im understanding it already, Im very computer literate, engineer actually. so if this is nothing but software that is data loging, and changing input, then saving? if its is as easy as learning the software, then im in... few measurements, Im up for it...


how much is it to get started? cause I will need it asap after....

what cam do you guys recommend? and PLEASE someone where do I get the injectors, and these parts to complete my build???

LINKS, SUGGESTIONS? post on my thread
https://www.thirdgen.org/forums/tbi/...oker-plus.html
----------
I AM now...

hey mike what cam do u recomend for this build? also will what ever cam I choose, work with either head?? or should I wait to get heads 1st?

what will work with tbi and what will work with the vortec, if I were to choose a cam for the heads>.??

 

I would go with a cam that has the best compromise between overlap and LSA, with the most lift @ fifty thousandths.
Comp Cams XR264HR series. (within limits of vortec beehive springs to get the extra lift)
To save money (on the vortec intake thing) it might be a considerable option to get the Dart SC heads.
Gotta look at the numbers, though.
In retrospect, I somewhat wish I could have gone with a conventional head (vs Vortec) for my swap. Nowadays, Dart, Trick FLow, AFR, etc
have awesome heads...but you can't beat the Vortecs for the price/hp gain.
I'm gonna do some research into cam/head combos and post again
Check out the GMPP HT383's cam. And see what you think.?
On the tuning side of the house, the EBL is the way to go. Dude, just spend the cash and buy it- you'll be happy you did. I've compared my original
ARJU.bin/$42.xdf to the EBL.bin/EBL.xdf and I must admit that the EBL is much more user friendly (to newbies like me), plus the .xdf is no BS. AE tuning is squared away, VE tuning ismade easy w/ the VE Learn feature, blah blah blah
The rate at which data is uploaded to your laptop for tuning is night and day going from the 7747 to the EBL- not even funny.

I'm sure someone will chime in and make me look like an idiot, but to quote Joe Dirt..."I'm new, I don't know what to do...?"
1. less LSA = harder to tune (I think the stock L05 is somewhere around 118 deg)
2. more lift = more power
3. more duration @ .050 = more power
4. AFR heads are the best, w/ ported vortecs (906 or 062 casting) being the best bang vs. buck (170 cc intake runners)
5. Hooker Headers
6. Injector size vs psi is a personal preference. I chose the 90 lb/hr's w/ 14 psi (max 330 HP), seems to work ok. I know Fast305/355 runs
low inj's at +++psi w/ good results (w/a strong fuel pump/regulator) and loves the efficiency (more fuel atomization).

Mike

http://www.worldracechallenge.com/Te...asp?printer=1&

 

okay, thanks for the continued help..
I agree, Vortecs are best bang for the buck, If I was not on a budget Ill be build this thing into a 500hp firespitter with like 600ftlbs of torque... that would be so sweet...

but my budget is 1100 give or take a few...
my block bore, horn, clearance, and .30 over is gonna be about 240$
crankshaft and balancer was 260$ so far... thats about half my budget already, and I need rings, bearing, mains, pistons oversized... < Im running out of money quick!

so Its really looking like vortec heads will be on hold, unless I can get the for a good price, SOON!

can you or someone provide me with a website to get some good cheap durable parts!


About TUNING!

I want to get the parts ordered today...
someone please provide me with the exact links and parts I need to start dataloging, and burning...

 

Here you go...order this up...

http://dynamicefi.com/

My favorite part is:

"Dynamic EFI is now providing an ECM upgrade to drive 4 TBI injectors. With this upgrade you can run two 2bbl TBI units together or a single 4bbl unit."

I'm just gonna throw this in here for shock value....

http://www.turbocity.com/product_inf...roducts_id=541

May favorite part is:

"his is a more aggressive system for the 350 cid or larger motors (big block and small block) up to 500 HP."

It uses two bone stock 500cfm TB's and 45 or 55lb/hr injectors...its basically a 4 barrel but it has got the look that kills. I think its really unique.

DID you just crap your pants or what?

LOL...this is exactly what I have been wanting to put on top of a 383 for my Caprice! I actually bought a supercharger and brought it to a speed shop and started considering a build up but they suggested a 383 would be the better choice because it has the TQ to get the large bodied Caprice moving.

"Hopefully".... Fast will get a hold of set up like this and make it a reality in his van!!! This would be the motor guys would just drool over...in my opinion anyway...I know I would drool all over it a couple of times a day if it were in my car.

 

dude, do I really need that thing? just the box cost, 240$ not including wires, chips, etc... Its cool however, but is it necessary for just 2 injectors maybe 90lb?

I need the least expensive route into tuning my 95 chip, I thought that is even the newest TBI chip, cause its the last year. So it has to be a direct plug to the OBD1, and laptop. the cheapest Ive seen is 60$

I do like that 2 TBs. but just the tought of that is scarey! not to mention the price... good god...

I have to maintain my mileage! This is a DAILY DRIVER!

 

I just drove about 35 highway miles and average MPG was 18.1. That's pretty good considering all the crap that is on my truck. With the 7747, I would probably get 10 or 12 MAX. I'm just gessing on that, but I know the 7747 is very slow.
ADding up the dollars...
EBL=$240
Moates BURN1 chip burner=$85
USB adapter for EBL-laptop connection=$25
27SF512 chips (2)=$10
$360 bucks
Mike

 

FYI...you could probably piece it together off of ebay for less man...that's what I am gonna do.

 

hmm, interesting, so this EBL is like a new computer for me? It will work the sensors better, and communicate faster than my stock ecm? Is it because of the EBL you got that mileage? so I do have the 7747 in my 95 suburban?

If so, I will surely have to upgrade, I have a crappy hypertech chip at the moment. Which I heard sucks!
----------
what would be the final piece together cost? Im still looking, but this will have to be a option too. cause my budget is short..

 

i might be wrong but i think that the EBL doesnt have the ability to control your 4l60e transmission. you would have to piggyback it somehow into your computer.
you probably have a 16197427 computer. it is a good one to have. it has many advantages over the 7747 from what ive read. it is what i have in my 95 truck. ive been tuning for about 6 months. so far so good.

 

O I forgot about that. Don't they sell a seperate controller for the 4L60e?
that's more cash, though.

 

www.CAR-PART.com

I searched a 3500 series chevy truck, throttle body, then picked 7.4L engine. Call the places and ask for injectors only...they will usually ship anywhere.

 

my mechanic guy, gave me that exact site, but my butt didn't look at it! It must be a good site! I will take a look now.

Well I just finalized all my parts, for those who are following my other thread! So Ill be asking ALOT of questions in this thread, once the motor gets finished!