Hey,
I got a 1989 Camaro Iroc Z28....It has the 5.7TPI engain. dose anyone no what the HP is on it??? Ive talked to someone and they said it has 220hp for a 5.7 and 210hp for a 5.0TPI but for me thats hard to beleve it would only be a 10hp between the 5.0 to the 5.7 i would think it would be a little more...if u no leave a answer.
thanks.
aaron

 

Last year for the thirdgen was '92. Last year for the IROC was '90, if you wanted to know. Not too sure why you asked that.

I beleive the '89 5.7ls came in at 235-240 hp? And the 5.0s were about 15-20 behind in hp.

 

89 IROC-Z A4 L98 V8 5.7 (350) 230@4400 330@3200 TPI 2.77 rear, 1 cat
89 IROC-Z A4 L98 V8 5.7 (350) 240@4400 345@3200 TPI 3.27 rear, 2 cats

The 89 Iroc 5 spd 305 had 220 or 230 horse again 1 cat, 2 cats. That is at the flywheel but there were some freak cars out there that had more.