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Topic: 350 Turbo Hydromatic pan bolt torque specs

in Forum: C3 Driveline Components


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350 Turbo Hydromatic pan bolt torque specs

Posted: 1/8/23 11:36am Message 1 of 6
Kenny78
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Toms River, NJ - USA
Joined: 7/28/2004
Posts: 116
Vette(s): 1978 Silver Anniversary Coupe Lt. Biege w/ Dark Brown Int. Happily owned since 1981.

Hi all,

 Anyone know the proper torque specs? Shop manual from Chevrolet says 130 in lbs.  

Other publications say :

7-9 ft lbs

10 1/2 - 13 ft lbs

84 -90 in lbs

Does anyone know ? 

Thanks




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Re: 350 Turbo Hydromatic pan bolt torque specs

Posted: 1/8/23 3:23pm Message 2 of 6
manchestershark
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Equinunk, PA - USA
Joined: 10/31/2007
Posts: 2465
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.

I don't KNOW, but think it would depend on the type of gasket used. Neoprene -v- rubber -v- cork. Are you assembling it dry or wet?  Have to be careful of squish factor! 





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Re: 350 Turbo Hydromatic pan bolt torque specs

Posted: 1/9/23 10:44am Message 3 of 6
Kenny78
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Toms River, NJ - USA
Joined: 7/28/2004
Posts: 116
Vette(s): 1978 Silver Anniversary Coupe Lt. Biege w/ Dark Brown Int. Happily owned since 1981.

Using cork gasket. Installing it dry. What do you suggest? Thanks




Re: 350 Turbo Hydromatic pan bolt torque specs

Posted: 1/9/23 11:04am Message 4 of 6
manchestershark
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Equinunk, PA - USA
Joined: 10/31/2007
Posts: 2465
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.

Suggestion only. Follow GM criteria.





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Re: 350 Turbo Hydromatic pan bolt torque specs

Posted: 1/9/23 1:23pm Message 5 of 6
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F4Gary
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Grapevine, TX - USA
Joined: 8/26/2006
Posts: 1525
Vette(s): 1972 LT-1 convertible with factory air. 2017 Black Rose Grand Sport convertible.

My 72 GM Service manual says 130 inch lbs.  Not sure if that helps.




   

Re: 350 Turbo Hydromatic pan bolt torque specs

Posted: 1/9/23 1:34pm Message 6 of 6
Kenny78
Gold MemberGold Member
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Toms River, NJ - USA
Joined: 7/28/2004
Posts: 116
Vette(s): 1978 Silver Anniversary Coupe Lt. Biege w/ Dark Brown Int. Happily owned since 1981.

Thanks guys.




in Forum: C3 Driveline Components


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