Engine type

Ive been told my camaro has 4 diff type of engines, i just want to clarify which engine was put into the 1988 iroc z - 28s

88 Irocs got one of three engines...

305 TBI
305 TPI
350 TPI

The 8th digit of you VIN number will tell you which engine the car came with. If its 8, than you have the 350, if its F, than you have the 305 TPI. It will be E if you have the 305 TBI engine.

Well I know the sizes it has a 350 TPI. But i mean is it L98 or wat..

Yes, the 350 that came stock that year was the engine that was designated as the L98. Here are two sites with a bunch of info on the 88 IROC. http://kotisivu.mtv3.fi/reijo.ojaniemi/camaroe.htm

http://www.f-body.org/tech/tech.htm

a lot of people change the badges to sell a 305 off as a 350 because the 350TPI L98 and 305TPI LB9 are visually identical engines..