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#1 |
Registered User
Join Date: Mar 2005
Location: Bartlett, TN (near Memphis)
Posts: 202
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need info on 12 bolt axle shaft for 1970
I just cursed the axle shaft that I had shipped to me from Superior axle. It is about an inch shorter than the shaft I took out. Turns out it is for a 65-69.
All of the axle manufacturers seem to think that 1970 axles have 5 lugs or at least that is what their internet sites say-my '70 has 6. Anyone know the OEM part number for the 1970 12 bolt, series 10 axle shaft? Can I get an aftermarket replacement that uses the original 6 bolt pattern? |
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#2 |
Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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Looking at the GM parts book it lists a part # of 1970 rear axle as 3966276 says its the same as 71-72 4wd rear axle..and there 6 bolt ...so might ask for a 71-72 rear 4x4 axle ...and you might get the correct one.
I'll add a little here for the 2wd guys thinking about swap to 71 - 72 axles. That 70 rear axle is the odd lot...in some cases a 70 rear axle will take a 71-72 5 bolt rear axle...for 2wd applications. It's a swap to 5 bolt pattern that makes this year of diff somewhat sought after as it can be swapped between 5 and 6 bolt axles from stock trucks. I have had a 70 that didn't allow the 5 bolt axle..it was a little longer about 3/4 inch...so I think it might be a change over period where some fit some dont. The typical 71-72 axle is about 3/4 inch longer than the 6 bolt pattern 67- 69 -70ish.
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
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#3 |
Registered User
Join Date: Mar 2005
Location: Bartlett, TN (near Memphis)
Posts: 202
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thank you kindly
I figured that the 4WD axle might do the trick. Hope I can get this thing before the chevy shown next weekend..
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