Does anyone know for sure when they stopped production on the 1990 IROC-Z. I know Chevy lost the rights to the IROC name on Dec 31, 1989 but when did they actually stop making them?

 

Same time. I believe that the last IROC came off the line on December 29, although I can't be totally sure with my memory being the way it is and all

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The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

Hey Jim I know this is trivial but history interests me. What got me going was the various engine hp ratings posted on the 90 305 and 350. I believe these ratings are for 1991 engines and not the 1990. I have a brochure from 90 and the rating are the same as 1989(ie 230 for the 350 and 190 for the 305 without the G92 option). Incorrect stats bug the heck out of me.
Rick

 

there is no diffrence between the 90 and the 91 engine. 90 to 92 the 350 made 345ftlbs and 245 hp. wich i belive is underrated.

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90 iroc l98
last season best corected 13.62 @102
mods
full exhaust, AFPR, pulley, jet stage 1 chip, billet servo, 52mm throttle body and a few other little things.