35 ft. lbs.
45, for an iron intake, 35 for aluminum.
I believe the torque is figured on the bolt size, not the material. you are using steel bolts ,therefore the torque for an intake bolt on a sm. block is 20 ft. lbs.
35 ft. lbs.
35 ft. lbs.
Need to know the year and engine size.
what about it?
Rule of thumb is 575 lbs with a cast iron intake. 535 lbs with an aluminum intake. Give or take from that depending on accessories and bracket set up.
No.
With iron heads, the stock spec for iron intakes of 30ft-lb should do. If you are going into aluminum heads, you do not want to go very tight, maybe 20ft-lb or so. AFR recommends just making them "snug" when installing an intake and exhaust headers on their aluminum small block heads.
torque specs 350 Chevy heads65 lbs
< intake > 13,5,2,10
350, to 400lbs, depending on how much aluminum you put on it.