Tbi Intake Dilema

[mrhino]

Originally Posted by biggsteve97

Well I have a1987 custom built 4x4 Chevy truck with throttle body fuel injection. What my question is would I be better of port matching my current intake, an Edelbrock Performer TBI, to match my throttle body or would I be better off with a stock intake that has been ported to 52mm. Im undecided but I know I should do something. I am runnning a 454 throttle body with 90lb per hour injectors. It runs good but i believe I can get more if I remove the restriction caused byt the smaller ports on the manifold. Any suggestions? I am on a limited budget and I use this truck mostly for pulling/hauling so I am not concerned with high rpm by any means. The cam is only good from 1500-4800 but produces alot of lowend torque. Thoughts?
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Im intersted in what your finding our on the manifold as well, I will be building a new engine for my wifes crewcab soon. i am encouraged by your currant numbers. (17 mpg) what engine do you have? what trans and gear ratio as well? I am shooting for 20 or more around town using a TB 5.7. Iv been doing research myself on what the best manifold would be. Also my last project 71 c10 I retro fitted a 5.3 in and it would only get 15-17. I feel i can do better.