i have an 89 iroc 350 with tbi,i was told to take off the tbi and carb it for more power, so here goes. I Bought a holley intake and holley 650 duel feed double pumper and a accell performance distributor.I can't tellyou my cam because i don't know, my 350 is a gm performance 350 crate moter.if any one has any suggestions please help, and tell me what kinda differcnece in speed i'm looking at.Also i have no cat and glasspacks i do however have the stock manifolds,is it truely important to put headers on .........thanks guys

 

an upgrade to headers i think would help some...

 

Dont waste your time with shorty headers. If you are going to do it, do it right and get 1 3/4 in longtube headers, like the one's I have that are listed in my sig. They made a BIG difference with the stock motor and they are a necessity with my new motor. Just my $.02

Mike (1bad91Z)

 

1bad91z did you have enough room to put in longtubes what about your o2 sensor????????

 

I agree, but 1 5/8 is probably fine in a lot of cases. On performance motors, however, 1 3/4 is nice.

 

get rid of the glass packs tooooooo restrictive and noisy. Recurve the timing to 34 to 36 degrees to come in at 3,000 rpm. Shorties are fine with a 3" y-pipe

 

You have to lift the motor about 6 in., feed them in through the top, then lower the motor back down with them. My o2 is now located in my Mufflex y-pipe (close to the driver side collector flange).

Mike (1bad91Z)