anyone know?

 

The base engine for the 1988 IROC-Z (coupe and convertible) is the 305 TBI. The 305 TPI was a $745.00 option, while the 350 TPI was listed at $1045.00 (coupe only).

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Paxton (6-psig): 12.57 @ 111 mph.
Paxton (6-psig) & 50-hp nitrous: 12.04 @ 114 mph.
ATI D1SC (10-psig): ?

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

[This message has been edited by Willie (edited February 19, 2001).]

 

what RPO code would i look for to see if it's TBI or TPI?

 

also, are the 91 RS's only TBI or are they TPI as well?

 

5.0 TBI: L03
5.0 TPI: LB9
5.7 TPI: L98/B2L

The base engine in the 1991 RS is the 3.1L V6 (RPO LH0). Optional was the 5.0 TBI (RPO L03). The TPI was not an option on the RS, except with RPO B4C (Special Service Package).

Willie

 

You can also check the 8th digit of the VIN. Its E for a TBI, F for a 305 TPI, and 8 for a 350 TPI. That will tell you what the car originally came with, but engine swaps are easy.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
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