xx_ED_xx

iTrader: (17)

http://www.iroczone.com/history.asp

I guess either or. I was always under the impression you could only get it as a 350. Funny in certain years you could get an iroc with a tbi (bleh)

ZONES89RS

iTrader: (25)

On the IROC debut, there was only a 305 available in 85 and 86, there was not 350 optional.

wolfen

yea ive done my research in the past and i know my vin if youd like i'll take a pic of it and post it on here if that makes you happy. but i really shouldnt be proving myself to anyone. I was only asking a question about intake and heads. The car was a matching #s car until a year ago when it got into an accident it had a year ago. I would love a 350 and i think thats the upgrade that makes most sense, but im not allowed to do it in my back yard by my father

xx_ED_xx

iTrader: (17)

Yeah i corrected myself at post 21

87silverbullet

iTrader: (11)

Yeah but you didn't correct yourself about the tbi. No IROC's came tbi. The RS (rally sport) cars came 305 tbi. The IROC's came 305 and 350 but 350 in the later years.

ZONES89RS

iTrader: (25)

They cam with 305 till the last one was made, period. 350 was exclusive to the automatic if you wanted one and the 305 is the only way you could get a standard trans.

xx_ED_xx

iTrader: (17)

Quoted from the link i posted.

1988:

1988 brought about some welcome changes in the horsepower department, as well as a somewhat revised exterior scheme. The Z28 was discontinued, and the IROC was now its own model. For the first time in the history of the Camaro, no carbureted Camaros were available. All motors offered fuel injection of some sort. The base IROC motor had the TBI injection that was very similar to what was found on the trucks. A new camshaft finally found its way into the 305 TPI and boosted horsepower to 195 horse in the auto, and a stout 220 horse when backed with the T5. The 350 also got a small horsepower boost to 225 horse. All of the V8s starting in 88 had "guided rocker arms" that featured a stamped-in lip on each side of the pad that contacts the valve stem.

Wesley Walden

you are exactly right on your info there although there were five years of the iroc only two years 1988 - 1990 was the only 2 of those years they combine the z28 in to the iroc which made it the iroc.z

ZEN357

World Products 58cc heads and an Edelbrock TPI instake maniold and runners.

big hammer

Chinese Stealth Ram FTW

Mike Morris

iTrader: (55)

Need to add gear,stall(with an auto) and valve springs if swapping to that intake from TPI or the car will slow down.

biketopia

iTrader: (5)

Holy 9 year old thread bump!!

Mike Morris

iTrader: (55)

????

IROC 1985-1990
Z28 name used from 85-87 during IROC run. Then 1991 when they lost the right to use the name to Dodge.