It doesn't have to be exact, but you would start out at around 25-30 for the first pass, 45-50 for the second, and do the third pass at spec.
torque specs 350 Chevy heads65 lbs
45 lbs.
The 400 Chevy small block motor should have approximately 390 horse power. It should have 427 foot pounds of torque.
65ft. LBS.
35 ft. lbs.
35 ft. lbs.
65 ft-lbs
45 Lb/ft Below is a link to all small block Chevy torque specs.
160 foot lbs
65 FT. LBS.
65 ft lbs
If it is a V8 it is 65FT.- LBS.