Author Topic: Rear Axle U Bolts  (Read 3553 times)

joesauer

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Rear Axle U Bolts
« on: November 09, 2012, 05:21:52 AM »
In 1968, were all 12 bolt rear axles equipped with two U bolts 3930054, or only those with the 396 engine?

jeff68

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Re: Rear Axle U Bolts
« Reply #1 on: November 09, 2012, 12:57:36 PM »
My 68 L30 12-bolt had one u-bolt and two t-bolts for each side.

On a related note, make sure you get the correct 3930054 u-bolts.  AMK has the correct u-bolts as part number B-11621.  The 'correct' u-bolts that the parts places sell (the ones with the flattened area) are not a match to the original 3930054 u-bolts.  If you're interested, Chick (68camaroz28) posted some u-bolt comparison pictures over on Team Camaro:  http://www.camaros.net/forums/showthread.php?t=182584&page=30
68 L30/M20 Convertible, Ash Gold
N10, F41, N34, Z21, ZJ9, Z87, D55, G80, P01, U17

joesauer

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Re: Rear Axle U Bolts
« Reply #2 on: November 09, 2012, 05:27:33 PM »
Thanks for the Team Camaro reference Jeff68.  My 68 12 bolt (350SS) also has one u bolt and 2 t bolts on each side,  but the u bolts are aftermarket.  Just ordered two u's from Heartbeat the are supposed to be identical to factory ones.  What prompted the question was the Assembly Manual that showed u bolts for the 396 option, although I assumed it also included all  350 SS's w/12 bolt as well.  Just want to check with the experts.

jeff68

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Re: Rear Axle U Bolts
« Reply #3 on: November 09, 2012, 05:51:25 PM »
  Just ordered two u's from Heartbeat the are supposed to be identical to factory ones. 
You may want to double-check what you are buying.  The HBC description gives the correct dimensions, but the picture shows an incorrect u-bolt with the flattened area and smaller diameter shank.

AMK has the correct ones.
68 L30/M20 Convertible, Ash Gold
N10, F41, N34, Z21, ZJ9, Z87, D55, G80, P01, U17

bertfam

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Re: Rear Axle U Bolts
« Reply #4 on: November 09, 2012, 07:05:04 PM »
Look at the list of non-illustraited parts for the L48, L34 and L78 in the AIM and you'll see it says "Assembles the same as RPO L35", which is two U-bolts and four T-bolts.

Although it doesn't say in the AIM, the L30 with 4 speed also used two U-bolts and four T-bolts.

Ed