91-92 Z28 convertible of course with the 305 , but with the G92 and m5 . If so are they few and far between . Thanx for any help

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Derek 90 IROC 5.7
Mods: All the usual bolt ons siamesed base , 2500 stall , 373's , SS hood ,big and littles , lotta reduced weight. Stock heads/rockers , cam ,runners , chip and TB
Best Et: 13.12@101 ...1.701 60 ft.

 

RPO G92 was not available on the 1991 or 1992 Z28 convertible, only the Z28 coupe.

Reference: Camaro Technical Database (for 1991) and GM Camaro brochure (for 1992).

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig): 12.57 @ 111 mph.
Former Paxton (6-psig) & former 50-hp nitrous: 12.04 @ 114 mph.
Current ATI D1SC (Initially 10-psig): Projecting high 11's.
Future ATI D1SC (15-psig): Gotta catch them pesky 26-psig boosted TTA's!!

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

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

 

I take it all verts had rear drums then .

Thanx Willie

 

Yes. The sequence of RPO's that were available are as follows:

G80 Limited-slip
G92 Performance axle ratio (J65 Four-wheel disc brakes included with G92)

In other words, G92 required G80 and was available on the Z28 coupe with 5-speed only. In previous years such as 1987, J65 and G92 were options on the IROC-Z convertible. Kind of makes you wonder which year(s) were the best Z28/IROC-Z ragtops, doesn't it?

Willie

 

Thanx again Willie , looks like the money pit will grow then

 

Will the rear disc fit ok? I have been planning the drum to disc rearend swap since I owned the car. Is there any problems putting a disc rear in a vert? I know t-top and coupes are done all the time, but is there any reason why they didn't put disc rears in? Also, I found a complete rearend, posi 2.77 gears out of an 89'. It just came in to the boneyard, and he wants $250.00 for it and all the parts to go with(proporting valve,parking brake cables,brake lines, and master cylinder, and brake booster. Seem like a decent deal? Thanks,


[This message has been edited by 89rsvert (edited May 15, 2001).]

 

You would swap rears out same as the coupe , no difference there .