Re: More power out of a Chevy Small block

Posted by Kendall on October 27, 2004 at 17:35:57 from (68.94.206.65):

In Reply to: More power out of a Chevy Small block posted by J.D. Jim A on October 26, 2004 at 18:09:15:

Not a whole lot you can do to the TBI system. I dont think the early TBI electonic control was as flexable as they are today. If you have to stick with it, find a machine shop that specializes in head porting. Free flowing exhaust, headers if possible. You change too much, you freak out the computer and will need special chip programing to compensate for all the changes. I think the best bang for your buck is having some head work, a good dual exhaust, headers if you plan on high rpm (drag racing?) and a high performance 4bbl intake manifold, using the tbi adaptor you will find in the link below. The TBI wont flow as much cfm as a real 4bbl, but the 4bbl manifold itself will flow better than the stock TBI manifold. There are a couple of other power goodies there to check out too. If you dont want to pull the heads, I'd at least check out the 4bbl manifold, dual exhaust, and some of the flow goodies in the link. This might be one of many web sites. Do a google search on "gm tbi preformance". Good luck with your project.

• GM TBI performance parts

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