Start in the center and work your way clockwise in a circular pattern toward the ends.
Not that it matters, but they stopped building 283's around 1968.
On a small flat pad protruding forward from the engine block just below the front of the passenger side cylinder head.
torque specs 350 Chevy heads65 lbs
35ft. lbs.
45 lbs.
45 Lb/ft Below is a link to all small block Chevy torque specs.
35 ft. lbs.
65ft. LBS.
35 ft. lbs.
65 ft-lbs
A lot of manufacturers use a torque setting, but not Chevy. With the motor running, go to zero lash, and then 1/2, to a full turn from there.
The 400 Chevy small block motor should have approximately 390 horse power. It should have 427 foot pounds of torque.
160 foot lbs