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

stock TBI with a big cam?

Old 07-13-2006, 12:51 PM
  #1  
Member
Thread Starter
 
Shake Zula's Avatar
 
Join Date: Oct 2005
Location: Youngstown, Ohio
Posts: 388
Likes: 0
Received 0 Likes on 0 Posts
Car: 1986 Olds Cutlass Supreme
Engine: 350
Transmission: 200-4R
Axle/Gears: good question...
stock TBI with a big cam?

Im gonna be buying back a TBI camaro I sold to my friend last year. I want to drop my 350 right in and use the stock TBI setup if possible. Buts it got a big cam, 234/242, .539/.558. I just want to know if the stock TBI stuff and computer can be tuned to run decently. Im talking a 13.99 tune. For the amount of money I put into the motor I might as well reuse it than sell it for a fraction of what I spent, so dont try to talk me into using different setup, I dont have the money. my only other alternative is an Edelbrock 600cfm carb and regular dual plane intake. Plus I love the choppy idle it has.

So, either it can be tuned, or it absolutely cannot. Whos got the answer?

Last edited by Shake Zula; 07-13-2006 at 12:54 PM.
Old 07-13-2006, 03:48 PM
  #2  
Supreme Member

 
BMmonteSS's Avatar
 
Join Date: Feb 2002
Location: Buckhannon, WV
Posts: 2,663
Likes: 0
Received 3 Likes on 2 Posts
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears
It most certainly can be tuned, but I wouldn't try it without learning the ropes on a stock setup first. Also with a cam that big the stock code is a little lacking, actually with that cam you're going to have to accept some limitations. Lucky for you Rbob's new EBL fixes all of this, the alpha-N mode will pretty much eliminate the need to fool around with MAP filtering at idle.

I tuned a 218*/226* cam on a completely new engien combo with no prior experience and it was difficult. It took me 3 evenings worth of tinkering to get it moving under it's own power and a week to get it to the point that I wasn't afraid to pull into traffic. It took me almost 6 months to get it "right". I can get it "right" in about a week now. So most of that time was spent learning how to tune the computer rather actually tuning the motor.
Old 07-13-2006, 04:15 PM
  #3  
Member
Thread Starter
 
Shake Zula's Avatar
 
Join Date: Oct 2005
Location: Youngstown, Ohio
Posts: 388
Likes: 0
Received 0 Likes on 0 Posts
Car: 1986 Olds Cutlass Supreme
Engine: 350
Transmission: 200-4R
Axle/Gears: good question...
Two of my friends are pretty good at tuning, thats why Id like to keep the TBI. No way I could do it myself.
Old 07-14-2006, 07:59 PM
  #4  
Junior Member
 
Chadster86S10's Avatar
 
Join Date: May 2006
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
I second that answer - Do it! One thing I ran into was lack of fuel on the top end though, so be prepared to get bigger injectors or up your fuel pressure.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MustangBeater20
TBI
11
10-29-2022 09:20 PM
gta90
TPI
40
09-15-2015 04:00 PM
camaro71633
Tech / General Engine
39
09-01-2015 10:24 AM
cstrobel65
Tech / General Engine
5
08-15-2015 10:19 AM
sreZ28
Engine Swap
4
08-14-2015 07:48 PM


Thread Tools
Search this Thread
Quick Reply: stock TBI with a big cam?



All times are GMT -5. The time now is 08:43 PM.