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Intake Manifold Torque Specs

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Old Dec 27, 2004 | 12:14 PM
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Default Intake Manifold Torque Specs

Could someone tell me the correct torque for a 1970 LT-1---350/370 intake manifold bolt? The shop manual lumps all 350's together and does not separate the aluminum intake from the cast---thanks---I have the day off and am diddling on the Vette in the garage---oh what fun it is

SEMPER FI--1970 Dave
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Old Dec 27, 2004 | 12:18 PM
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i torqued my aluminum one to the same specs as the cast iron one...never gave it a second thought....
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Old Dec 27, 2004 | 12:44 PM
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I have never torqued any intakes in my life. Most of the time it is to difficult to get a torque wrench in there. I have always made them just tight. Never had one leak. I do follow the tightening sequence though.
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Old Dec 27, 2004 | 04:12 PM
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The book says 35 LB-ft for my 88' pickup with Aluminum manifold.
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Old Dec 27, 2004 | 08:31 PM
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Originally Posted by Gordonm
I have never torqued any intakes in my life. Most of the time it is to difficult to get a torque wrench in there. I have always made them just tight. Never had one leak. I do follow the tightening sequence though.
I agree. About 35 Grunt-pounds is about right.

-Mark.
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Old Dec 27, 2004 | 08:35 PM
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Originally Posted by Gordonm
. Most of the time it is to difficult to get a torque wrench in there. I have always made them just tight. Never had one leak. I do follow the tightening sequence though.
Easy to torque them without the carb mounted. WITH the carb is almost impossable to get to them all properly.
Eddie
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Old Dec 27, 2004 | 09:11 PM
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When I mounted my Stealth aluminum, I think the specs were 30ftlb according to the sequence.
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Old Dec 28, 2004 | 12:07 AM
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Originally Posted by Gordonm
I have never torqued any intakes in my life. Most of the time it is to difficult to get a torque wrench in there. I have always made them just tight. Never had one leak. I do follow the tightening sequence though.
Do you use sealer? What brand gaskets do you use?
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Old Dec 28, 2004 | 12:15 AM
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I've never used a torque wrench on my intake.. I usually tighten the intake pretty tight...
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Old Dec 28, 2004 | 03:35 AM
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My RPM aluminum called for 25 ft/lbs.
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Old Dec 28, 2004 | 08:27 AM
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Originally Posted by pcfred
Do you use sealer? What brand gaskets do you use?
I have used a bunch of different ones but right now. I use the Fel Pro gaskets with the bead of silicone on them. I still use a light film of silicone on the water jackets.
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