I have two questions. Were the IROC's the only cars that got front hood louvers? Did the 350's only come with the IROC package?

 

85-87 Z28's came with the same louvers. The IROC-Z was the only model available with the 350 from 87-90, (88-90 there was no Z28) then the 91-92 Z28's were available with them too.

 

Z-28's from 85-87 had hood louvers, 87-90 Irocs got the 350, 91-92 z-28s got the 350. I think b4c RS's also got the 350.

 

Were the IROC's the only cars that got front hood louvers?

No. Cars that got the louvers:

1985-1987 Z28's (with and without the IROC-Z option), &
1988-1990 IROC-Z's (No Z28's were produced these years).

Did the 350's only come with the IROC package?

No. 350 availability:

1987 Z28 with IROC-Z option,
1988-90 IROC-Z (no Z28's these years),
1991-92 Z28 (no IROC-Z's these years), &
1991-92 RS's with RPO B4C (police package).

 

Are those really hood louvers? They just look like humps on the hood. I thought louvers had to look like vents.

 

Are those really hood louvers? They just look like humps on the hood. I thought louvers had to look like vents.

Technically, you are correct. No louvers in 1991 - 92. GM replaced the louvers with "blisters", although the hood is identical. Thanks for the clarification.

Willie

 

Ok yeah that's what I thought. Thanks for your clarification too.