442 TO code differential help
#1
442 TO code differential help
I have a '71 442 with the stock TO code 3.73 and I'm looking to install a 3.42 so I can enjoy the car on the highway a bit more.
I've read that all '71 442s came with the corporate GM axle and not a type "O". Is this true for all axles including the heavy duty G89 "TO"?
Is there a guide on the net somewhere that will help me ID my axle?
I've read that all '71 442s came with the corporate GM axle and not a type "O". Is this true for all axles including the heavy duty G89 "TO"?
Is there a guide on the net somewhere that will help me ID my axle?
#2
fyi
I have a '71 442 with the stock TO code 3.73 and I'm looking to install a 3.42 so I can enjoy the car on the highway a bit more.
I've read that all '71 442s came with the corporate GM axle and not a type "O". Is this true for all axles including the heavy duty G89 "TO"?
Is there a guide on the net somewhere that will help me ID my axle?
I've read that all '71 442s came with the corporate GM axle and not a type "O". Is this true for all axles including the heavy duty G89 "TO"?
Is there a guide on the net somewhere that will help me ID my axle?
Your car was built with the 8.5" 10 bolt. You can reuse your existing posi carrier & install 2.73, 3.08, 3.23 or 3.42 gear sets. If you have not already obtained the 3.42 gears you might consider one of the other ratios but first & foremost decide how tall a rear tire you will be running. 3.23 gears are an excellent compromise between performance & cruise RPM.
#4
Thank you : )
Maybe the 3.23 is a better gear for me.
The first thing they ask when I call a shop to have this done is which axle I have. Can you help me verify that the G89 is a corporate 10 bolt and not an O type axle?
Maybe the 3.23 is a better gear for me.
The first thing they ask when I call a shop to have this done is which axle I have. Can you help me verify that the G89 is a corporate 10 bolt and not an O type axle?
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nj_cutlass72
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March 18th, 2013 04:31 AM