Could someone please tell me if:
1) In 1988 all IROC-Z (Borg Warner 9bolt) would have came with an Aluminum Drive Shaft?
2) What the RPO Code is for an Aluminum Drive Shaft?
TIA!

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Randy
1988 IROC-Z
1992 Heritage Edition RS Convertible

 

Randy,
1) Yes
2) RPO code = JG1

 

Awesome thanks Bret!
Now would that RPO code still be the same in 92?

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Randy
1988 IROC-Z
1992 Heritage Edition RS Convertible

 

Though, in the History/Registration section they told me 1) Was a no but you both agree on the RPO Code

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Randy
1988 IROC-Z
1992 Heritage Edition RS Convertible

 

Mine didn't. I have the G92 suspension option w/3.45 9-bolt. But it didn't have the aluminum driveshaft. I'll check the option codes when I have a chance.

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90 RS Convertible
Owner: Top-Down Solutions
PO Box 5601
Hacienda Heights, CA 91745
(626)369-0040

http://www.taskerinc.com/gs3/profiles/Lon_profile.htm

 

Maybe its just the IROCs that came with the so called "performance package" rearend of a Borg/Warner 9 bolt with 2:77?

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Randy
1988 IROC-Z
1992 Heritage Edition RS Convertible

[This message has been edited by 8T8IROC (edited December 11, 2001).]

 

2.77 gears is not the performance package. The G92 package is 3.27/3.23 gears in the 350 TPI automatics, and 3.45/3.42 gears in the 305 TPI 5-speeds. It also included dual cats in 89-92 models. But the JG1 aluminum driveshaft was a separate option, not part of G92, and not standard. I dont know what triggered it, but it seems to have come on a lot of 88 cars.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
318 RWHP, 419 RWTQ
13.23 @ 107.62 MPH (2.13 60')
Southern California
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

Lon,
You have an RS so I'm not too suprised you didn't get the aluminum d-shaft. Most of the IROC's should've had it.

And yes Randy, the RPO code should be the same for all years.

[This message has been edited by BretD 88GTA (edited December 11, 2001).]

 

Kevin, I know the 2:77 was not the G92 package but when I looked it up in vintage 88 GM literature believe it or not GM classified the Borg Warner 9 bolt with 2:77posi unit as a "performance package" quite laughable I know that's why I always put it in qoutes Bret I think Lon is talking about the 88 IROC he has as not having the aluminum drive shaft. Right Lon?

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Randy
1988 IROC-Z
1992 Heritage Edition RS Convertible

[This message has been edited by 8T8IROC (edited December 11, 2001).]

 

Yessir. That black thing taking up space in my back patio. I guess I should revise my profile to show I own it.