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post #1 of 10 (permalink) Old 04-30-2020, 07:04 PM Thread Starter
 
 
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64 Impala

does anyone know the torque specs for the 10 bolts on differential? Thank you
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post #2 of 10 (permalink) Old 04-30-2020, 08:52 PM
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I don't have a 1964 Chassis Service manual to look it up (because I don't own a 1964 Chevyful size car). But that is where you will find that information if you own a 1964 Chevy full size car. May be in the Shop manual Supplement for 1964 but once again I don't own, and never have owned an X-frame full size Chevy.

Big Dave
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post #3 of 10 (permalink) Old 05-01-2020, 09:35 AM
 
 
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Big Dave just loves to tell everyone he never owned an X frame and to buy the service manual. Just move along Dave if you can't or won't bother to help.

Yanez, I looked online and found the torque spec for the 10 bolt 8.2" rear cover at 20lbs. There was nothing specific in the rear end service manual I have.
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post #4 of 10 (permalink) Old 05-01-2020, 12:45 PM
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Quote:
Originally Posted by mlsully View Post
Big Dave just loves to tell everyone he never owned an X frame and to buy the service manual. Just move along Dave if you can't or won't bother to help.

Yanez, I looked online and found the torque spec for the 10 bolt 8.2" rear cover at 20lbs. There was nothing specific in the rear end service manual I have.
I think he is talking about a 3rd member type 8.2 used in all X-frame cars not the rear cover 8.2 that was used in 64 Chevelles and Novas. I will pull out my manual when I get home and see if I can find it. The rear cover 8.2 was used in chevelles and Novas in 1964, but I believe they didn't swap the impala over until 1965.

1963 Impala Convertible (Frame off resto-mod in progress)
1963 Impala 2 door hardtop (Pro Street build in progress)
1963 Impala 4 door hardtop (Parts car)
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post #5 of 10 (permalink) Old 05-01-2020, 01:20 PM
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The 64 Shop Manual has little info on the rear differential, but the 64 Shop Manual is just a supplement to the 61 Shop Manual. So, going the the 61 Shop Manual, it says:

"Assemble differential carrier assembly to axle housing, install new sealing lock nuts and tighten to 35-45 ft lbs"

Like BigDave said, if you are going to own a 64 Impala, it is well worth it to own the 61 and 64 supplemental Shop Manuals. Tons of great info from an authoritative source. If you can't afford them, dig around, there are some scans out on the internet. But I find paper manuals better. Mine are 30+ years old with lots of greasy fingerprints on them ;D

1964 Impala 4 door sedan

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post #6 of 10 (permalink) Old 05-04-2020, 02:51 PM Thread Starter
 
 
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Thank you for the responses. Its for the 10 bolts that go in the 3rd member.
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post #7 of 10 (permalink) Old 05-04-2020, 05:59 PM
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It's always good to torque them, but I would just tighten them by hand. Tight, but not too tight. Never had any problems switching out 6 of them in my '62. It had a 283, 3-Speed at the time. When I was 16, no one ever told me that I could shift without leaving a patch of rubber, lol.

Now a Flywheel, that was a different story. We always torqued our Flywheels.

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post #8 of 10 (permalink) Old 05-05-2020, 01:24 AM
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If you don't torque the pu

mpkin to the housing to the correct torque value you will warp the case and develop leaks. It isn't a problem with the pumpkin falling out but in warping the sealing flange.

Big Dave
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post #9 of 10 (permalink) Old 05-15-2020, 02:09 AM
 
 
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can anyone say torque specs
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post #10 of 10 (permalink) Old 05-15-2020, 09:41 AM
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You missed it in my earlier post. I qouted the shop manual.

1964 Impala 4 door sedan

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