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Old 09-17-2003, 05:59 AM
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Torque spec for intake manifold bolts

I have removed the intake manifold from my circa 1970 Olds 307 to replace a leaking gasket. I'm ready to install the manifold and need to know if GM recommends a specific torque for the intake manifold bolts.
Thanks for the information.

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Old 09-17-2003, 08:10 AM
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They require 30ft.lbs torque, and MUST be done in a proper sequence. Starting in the center and in a X pattern. You may want to look up on the Knowledge Base for a diagram I don't have the time to do it today. Maybe someone else will have it.
Also do the torque in 3 steps, like 10lbs,20lbs then 30lbs.
This is a must for sealing and warpage of the intake.
George
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Old 09-17-2003, 09:31 AM
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Thanks George. I've got it. I had checked the knowledge base but found nothing.
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Old 09-17-2003, 10:31 AM
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Numbering the bolts from the right side then the left on the intake then follow the secquence.
Right side 12, 11, 4, 1, 5, 6, left side 10, 9, 3, 2, 7, 8.
Just put a piece of tape with the numbers over the bolt and thats your torque secquence. Any problems please send me a private message. It will be a pattern starting in the center.
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