Is there way to tell what gears I have?
08-23-2004, 09:27 PM
#1
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Car: Kitt
Engine: Classified
Transmission: T56
Axle/Gears: Moser/4:11
Is there way to tell what gears I have?
A friend's got a '91 Z28 with a 350. The sticker (I can't believe he still has it, lol) says Performance Package on it I think. It's Posi....is there a way to tell what gearing it has? Can anyone guess?
08-23-2004, 09:41 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
The only way to know for sure would be to take the cover off and count the teeth.
08-23-2004, 09:59 PM
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Car: 89 Iroc
Engine: lb9
Transmission: wc t-5
Axle/Gears: 10 bolt 3.08 posi
Originally posted by Apeiron
The only way to know for sure would be to take the cover off and count the teeth.
The only way to know for sure would be to take the cover off and count the teeth.
just pull the cover and count
08-24-2004, 09:12 PM
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Car: Kitt
Engine: Classified
Transmission: T56
Axle/Gears: Moser/4:11
Well I'm pretty sure these are the original gear. Can anyone give me a rundown of what gear choices came with Posi in '91?
08-24-2004, 09:21 PM
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Car: 1987 F150...PAAARTY FOUL!
Engine: 300 I6 stump pullin sumbiscuit
Transmission: 4 speed grind box
Axle/Gears: 3.55 unlimited slip differential
well, there was a pretty wide variety. do you have the original RPO sticker? if so, go to the RPO decoder and decode the GU? codes. like, for instance, mine was GU2 which is the "dreaded" 2.73 gear ratio. so just go decode whatever you have...or if you don't have it, then get to countin' son. actually, if you wanna go through the trouble, there is another way...you get a paint marker, put a mark on the driveshaft, and make a mental mark on the tire, line it with a mark on the car. spin the driveshaft one turn, and count how many times the wheel rotates. 2.73 times, 3.73 times...you get the idea...you most likely have 3.42's if your car is all stock...that seems to be fairly popular in the 92s...should be 3.42's if ya got the G92 package...3.08's should be standard, although 2.73's were still available...
Josh
Josh
Last edited by screaminformula; 08-24-2004 at 09:34 PM.
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08-24-2004, 10:18 PM
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Car: 82 trans-am
Engine: 305 4bbl q-jet
Transmission: 700r4
If you guys don't mind me asking here but how about for an 82 trans am, what was the gear ration for an 82 I swapped my 200c for a 700r4 and now my speedometer is about 12 to 15 mph off above the car's actual speed. I was told I need to change my speedo gear but I need to know the rear end ration to see what gear I need.
Thanks everyone
Chris
Thanks everyone
Chris
08-25-2004, 02:38 AM
#9
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Car: 1987 F150...PAAARTY FOUL!
Engine: 300 I6 stump pullin sumbiscuit
Transmission: 4 speed grind box
Axle/Gears: 3.55 unlimited slip differential
well, now on that, unless you have an option sticker you will have to either count teeth or use the method i listed above...good luck guys...
Josh
Josh
08-25-2004, 05:53 AM
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Car: 1989 FIREBIRD FORMULA WS6
Engine: TPI 305
Transmission: T-5
?
You could also pull the cover and look on the side of the ring gear and it should be stamped on there. Is there a tag on the rear cover?
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