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| GMC V6 and V12 Engines Engine repair and rebuilding |
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#1
November 25th, 2015, 11:44 PM
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Intake Manifold Torque spec
Can anyone tell me what to torque the bolts to for an Intake Manifold on a 351 V6. I have to replace the gaskets and I am struggling trying to find proper torque information.
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#2
December 2nd, 2015, 05:03 AM
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Re: Intake Manifold Torque spec
I'll look in the manual tomorrow morning and let you know if I find anything. It's 29 degrees right now so no way I can get outside. If I don't find any specs, I'm sure you'd be OK with German torque specs...You know, "GutenTight".
 Maybe someone else will pipe up. I know alot of the old timers have done gaskets.
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#3
December 2nd, 2015, 12:17 PM
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Re: Intake Manifold Torque spec
Greetings, makindust!
I'm pretty sure that the intake manifold bolts would be Grade five 3/8-16 NC bolts. This type of fastener is usually torqued to 35 foot pounds, although different applications call for different torque specs. If you go to Fastenal, I am quite sure they would be able to provide you with a bolt torque specification chart. Hope this helps.
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#4
December 2nd, 2015, 07:02 PM
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Re: Intake Manifold Torque spec
I just tightened mine down snugly. lol Bout 25-30 foot pounds I think is common.
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#5
December 3rd, 2015, 03:26 AM
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Re: Intake Manifold Torque spec
thanks for the input, I just didn't want to get carried away and over torque and crack the manifold. I would probably have a hard time finding a replacement. Thanks
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#6
December 3rd, 2015, 09:06 PM
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Re: Intake Manifold Torque spec
Motor's Truck Repair Manual Engine Tightening Specs.
list 20-25 ft. Lbs. for V6-351 Intake Manifold
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#7
December 3rd, 2015, 09:35 PM
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Re: Intake Manifold Torque spec
Quote:
And dont forget to test your torque wrench before getting started either. Ask me how I know about that. P.S. Sorry for the slow reply. Big day yesterday.
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#8
December 5th, 2015, 06:08 AM
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Re: Intake Manifold Torque spec
Thanks, no problem about the dslay in response. I wasn't able to get outside to work on my truck until this evening.
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