Gear Identification
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Joined: Jun 2003
Posts: 119
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From: PURDUE
Car: 94 Camaro
Engine: 383 Stroker
Transmission: T-56
Axle/Gears: 3.73
Gear Identification
I just bought an 86 iroc with the 9 bolt rear end. Without jacking the car up and testing it, is there any other way to determine the rear end ratio? I know on the 10 bolts there is an axle code beside the diff, is this true on the 9 bolt also? Is there an RPO for each gear size? I think the only RPO is the G92 for perf. axle ratio, but mine doesnt have this.
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Joined: Aug 2001
Posts: 1,109
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From: Hillsborough, NJ
Car: 1990 IROC
Engine: L98
Transmission: TH700-R4
my 9 bolt has a tag that says "BW 3.27"
but the only way to be sure is to pull the cover off and do a little division....
but the only way to be sure is to pull the cover off and do a little division....
Last edited by curt86iroc; Dec 1, 2003 at 04:00 PM.
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Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
If you do some math you can mark a tire and then roll the car forward one turn, while someone counts the times the drive shaft turns the yoke,.You can get a real good guess.
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