9 bolt LSD change
#1
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Car: 89 Iroc
Engine: 5.7 350
Transmission: 700r4
Axle/Gears: 3.73
9 bolt LSD change
I just picked up a 1989 GTA it has a 9 bolt with 3.27 gears and a LSD. Upon inspection of the differential with pressure on one wheel I can rotate the wheel that has no pressure with ease. It also has the axle seals and housing where leaking bad.
So i picked up another 9 bolt off craigslist that the lSD locks up and can barley move the one end with pressure on the opposite axle. The axle i picked up is 2.77 gear.
My question is should I install new bearings or do you think I can get away with the bearings that are on the craigslist one. I am already going to axle bearings and seals is there anything else I should consider when doing this change.
So i picked up another 9 bolt off craigslist that the lSD locks up and can barley move the one end with pressure on the opposite axle. The axle i picked up is 2.77 gear.
My question is should I install new bearings or do you think I can get away with the bearings that are on the craigslist one. I am already going to axle bearings and seals is there anything else I should consider when doing this change.
#2
Re: 9 bolt LSD change
It's not going to work. The 2.77 gear fits a 2 series differential and the 3.27 gear fits a 3 series differential. You can't install the 3.27 gear on the differential that came out of the 2.77 rear end.
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Car: 89 Iroc
Engine: 5.7 350
Transmission: 700r4
Axle/Gears: 3.73
Re: 9 bolt LSD change
No good. Well back to square one do you think if the gear oil had been changed without friction modifier that once I add some that it will work better
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Car: 89 Iroc
Engine: 5.7 350
Transmission: 700r4
Axle/Gears: 3.73
Re: 9 bolt LSD change
That's the road I am going down now. Can I use the Cones and spider gears from the 2.77 rear?
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Car: 89 Iroc
Engine: 5.7 350
Transmission: 700r4
Axle/Gears: 3.73
Re: 9 bolt LSD change
Thanks for all the help will see if I can get this done this weekend. Here is a pic of 3.27 cone completely bottomed out. I don't know if anything is messed up yet but my guess would it's probably not good.
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