question, please help

ok, i got an engine from an 87 iroc, its a carbed 4 bbl, was this the stock engine??? on the block is written "87 camaro 5.0" but i thought most irocs in 87 were tpi/tbi.....help?

thirdgen.org is your friend. There were some that came with a carb

Speaking strictly of IROC-Z's, here's a rundown of available engines:

1985
Standard: 305 carb (RPO LG4)
Optional: 305 H.O. carb (RPO L69)
Optional: 305 TPI (RPO LB9)


1986
Standard: 305 carb (RPO LG4)
Optional: 305 H.O. carb (RPO L69) only 74 produced (some in Z28's)
Optional: 305 TPI (RPO LB9)


1987
Standard: 305 carb (RPO LG4)
Optional: 305 TPI (RPO LB9)
Optional: 350 TPI (RPO B2L, L98)


1988 - 1989
Standard: 305 TBI (RPO LO3)
Optional: 305 TPI (RPO LB9)
Optional: 350 TPI (RPO B2L, L98)


1990
Standard: 305 TPI (RPO LB9)
Optional: 350 TPI (RPO B2L, L98)