Idle shake

shep76 said

Thank you. Is 12 inHG considered low? Or would that be fairly normal if it has a mild cam? Maybe I’ll remount the intake manifold.

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depends on the cam. i wouldn't be thrilled with that, but it's more than enough to run power brakes.

speaking of... do you has? if so, check the line & fitting on that ****.

have you had the manifold off?