Can anyone tell me if an 86 iroc-z with a 305 tpi engine and automatic tranny is fast. If so how fast. I've heard it has 190 hp, would this car be able to do a burnout. How big is the difference between the 305 and the 350 engine.

 

Well. Burnout, sure it can do a burnout. A V6 car in good running order can do a burnout. I think i even saw a TBI car do a burnout once.

Fast. Not even close. A stock 86 will run pretty much high 15s at best, and 16s aren't out of the question. You HAVE to swap the cam in one of those cars to get it to do anything.

 

85 Irocs had a good cam, but a ****ty computer. 86 irocs had a weak cam and a slightly improved computer>!>!>!>! Doesn't make up for going from 215 hp in 85, to 190 in 86. my friends 85 305 tpi ran a pretty consistent 16 flat and it was rather healthy. Pretty stock though. I would say from stop light to stop light it might be a fun car, but half way down the track or at some freeway speeds, it wouldn't be hard to pass up.

Will

 

well i have an 86 iroc bought it in 98. i love it and yes its fast but depends on what you want. if you're wanting lt1 fast no. but for what it is its a fun car.just put in a 305 out of a 87 gta. 230 hp not bad, will soon be better . good luck dont get an 85 stick with 86 to 89.