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Torque flywheel

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Old May 13, 2006 | 02:43 PM
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Default Torque flywheel

I am putting engine back together, and don't have a manual that tell me what to tighten things down to. I would like to know in Ft. Lbs. what to tighten the flywheel , exhaust manifolds , intake manifold??? Is there a torgue chart that I can find like maybe some where on the internet? By the way this is for a BIG BLOCK.
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Old May 13, 2006 | 04:01 PM
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St. Jude Donor '09
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I can double check later but I think the flywheel is 65 with blue thread locker, stock exhaust manifolds to head are 25ftlb and my intake was 30ftlb.
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Old May 13, 2006 | 04:42 PM
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Originally Posted by Lilfur
I am putting engine back together, and don't have a manual that tell me what to tighten things down to. I would like to know in Ft. Lbs. what to tighten the flywheel , exhaust manifolds , intake manifold??? Is there a torgue chart that I can find like maybe some where on the internet? By the way this is for a BIG BLOCK.
Here is some information that will help you:

1. Intake manifold bolts: 30 Ft-lbs

2. Exhaust manifold bolts

a. 1968-1977 Vettes: 20 Ft-lbs
b. 1968 - Up: 20ft-lbs outer bolts, 30Ft-lbs inner bolts

3. Flywheel mounting bolts:

a. 327,350 c.i. : 60 Ft-lbs
b. 427,454 c.i. : 65 Ft-lbs

Good luck!


PS Check Haynes Repair Manual for Chevrolet Corvette 1968-1972, Chapter 2, p 2A-2, edition 1999

Last edited by c3dreamer; May 13, 2006 at 09:18 PM.
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Old May 13, 2006 | 08:46 PM
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http://www.boxwrench.net/specs/chevy_bb.htm try this link
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Old May 13, 2006 | 09:26 PM
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Originally Posted by 2th farmer
That's a good web site. I just installed a new engine and didn't pull the THD 400 so I used special torque convertor bolts from Jegs and blue locktite. There was no room to use a torque wrench so it was grunt power....
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