Some say 25 ft/lbs. others say 45 ft/lbs. Either is fine, just try to get them all the same.
Iron Intake to Iron Heads - 40ft lbs Aluminum Intake - 25ft lbs
45, for an iron intake, 35 for aluminum.
25 ft./lbs.
the edelbrock website should have that info.
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If it is a small block V8 with cast iron heads torque the bolts in a criss cross pattern to 30 lb/ft.
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Here is the installation instructions for the Edelbrock Performer aluminum intake manifold for a Ford 351M/400...hope it helps out. http://www.edelbrock.com/automotive_new/misc/tech_center/install/2000/2171.pdf
how to torque an aluminum intake for 350 25 ft./lbs.
hi