the ports inside the head. thats refferd to as the "runner".

 

oh okay, so whats everyones opinion about the biggest and best junp in power with my car, a cam and lifter upgrade and maybe a HSR system to help with th topend hp, or gears, or nitrous.?

 

if you want the cheapest way for power nitrous is the way to go but my motto is all throttle no bottle honestly

 

IMO i would stay away from the bottle. one wrong burp and you can have alot of damage.

the HSR is a killer port setup that allows great top end. if i were wanting more from my formula i wouldnt hesitate to go that route but when the formula is tune i'll be pleased.

 

How does your car run with the current mods you have already, any estimate on how much hp . im suggesting to my friend to get some runners and Long tubes , to start his 350 tpi project

 

Runners are next to useless with the stock lower manifold. Siamesing the lower 2" or just getting an aftermarket base and adding ported SLPs or Big mouth runners will add some nice gains. If you want more power switch to an LT1 converted intake or a stealth ram. TPI is fun on the street, but just dies up top.

My old 1989 350 GTA did 14.8s@94 bone stock with 3.27s.