You all seem to know a lot more about mods for TPI than I do so i have a few questions maybe you can help. I have an 87 GTA it has slp runners, exhaust, computer chip, air foil, 3.73 gears, adn SLP cold air intake, on top that i have a 305 Jasper engine with 10k, I was wondering what the next best modification should be, I dont know if i should go with headers, a cam and gear drive or a different manifold. Also is a underdrive pulley worth it. I lose power in 3rd gear thats where im losing the races so im looking for something that will help me there. Some of my freinds say a cam is a good investment, Is there anything else i would need before i get one. Thanks

 

Well, if you haven't ported your plenum yet do that and while you have the plenum off you might consider adding AFPR. Headers of course would be a good idea. I didn't really see any gains with underdrive pulleys, but they are a cheap easy to install mod.

There, now don't go digging up any more old posts.

 

yeah i would get headers to finish off your exhaust, also an afpr might be good to get..

 

whats an afpr? sry new at this

 

Adjustable Fuel Pressure Regulator. I would get a Holley

 

how much are they and are they easy to install, how do they help you