how to torque an aluminum intake for 350 25 ft./lbs.
On a cast iron intake the torque is 30 lb/ft.
The 350 cubic inch Chevrolet intake manifold bolts have a torque specification of Haiti pounds psi. The bolts should be torqued at 40 pound intervals.
30-ft. lbs
40 FT. LBS
.035 FT. LBS.
35 ft. lbs.
25 ft./lbs.
i retorqued my Chevrolet heads to 90 ft. lbs. but i also found if you use the specific torque pattern the gaskets will seat better....i don't torque my intake boltsAnswer65 lb.ft.
350 ft/pds This above answer it laughable and you will break every single bolt if you try to torque them to that figures. The correct torque on cast iron heads is 30 ft/lbs.
25 to30 foot pounds
Intake bolts should be torqued to 35 ft lbs in the appropriate sequence. There should be 12 total "intake" bolts