rear end
rear end
I have a 84 z-28. I would like to know if anybody could help me find out what axle ratio and what axle type I have. Here is the axle code that I find on the axle housing. 6hs c167 1.
I went out and looked today. The only numbers I seen is 6HS C187 1 OR 6H8, 6H5.Would it help if I gave you guys the vin #. I have that haynes automotive repair manual for 1982 thru 1992 camaro. but I couldn't find it in that book.
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Joined: Jul 1999
Posts: 17,262
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
1984 f-body axle code 6HS = 3.73 Locking
There is no 6H8 or 6H5
I don't know if the "locking" is a posi or a gov-lock.
C = Buffalo assembly plant
167 = day or year
1 = day shift
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Follow my racing progress on Stephen's racing page
and check out the race car
87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
461 Big Block installed and ready for the 2001 racing season
Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Altitude corrected rear wheel HP based on power to weight ratio: 476.5
Best 60 foot: 1.662
Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association
87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley
[This message has been edited by Stephen 87 IROC (edited April 19, 2001).]
There is no 6H8 or 6H5
I don't know if the "locking" is a posi or a gov-lock.
C = Buffalo assembly plant
167 = day or year
1 = day shift
------------------
Follow my racing progress on Stephen's racing page
and check out the race car
87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
461 Big Block installed and ready for the 2001 racing season
Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Altitude corrected rear wheel HP based on power to weight ratio: 476.5
Best 60 foot: 1.662
Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association
87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley
[This message has been edited by Stephen 87 IROC (edited April 19, 2001).]
Moderator

Joined: Jul 1999
Posts: 17,262
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
A gov-lock is normally an open diff but when one wheel starts to spin, the diff will lock up. When you see one you'll know what it is. It doesn't look like a posi with clutches or cones.
It will unlock again when the wheel speeds are different such as going around a corner. The locking mechanism isn't that strong for performance applications but it still works. My truck has one and I've never had any problems with it.
[This message has been edited by Stephen 87 IROC (edited April 19, 2001).]
It will unlock again when the wheel speeds are different such as going around a corner. The locking mechanism isn't that strong for performance applications but it still works. My truck has one and I've never had any problems with it.
[This message has been edited by Stephen 87 IROC (edited April 19, 2001).]
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Supreme Member
Joined: Jul 1999
Posts: 2,767
Likes: 2
From: Vereinigten Staaten
Car: Take
Engine: Your
Transmission: Pick
One easy way to find out your gear ratio, is to drive your car at 70MPH w/ your tranny in the 1:1 ratio (3rd for a 700, 4th for a T-5) and whatever your RPMs are, reflect your ratio. For example, my car w/ 3.73s cruise at 3700 RPMs, a 3.42 will be 3400, 3.08 will be 3000, etc.. I think you can make the connection.
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'87 Trans Am
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------------------
If you live in Southeastern US, check us out!
South East Thirdgen
GM Master Tech
ASE Master Tech + L1
Savannah, GA
'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
-->14.97 @ 94.9 MPH<--
'97 Bonneville SSE
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