273 intake/valve cover bolt torque

The plymouth service manual for the 64-65 273 intake manifold with 5/16 bolts calls for 270 inch pounds which is 22.5 foot pounds.
(If you want to check this out, you can use the calcualtor at this link:
http://www.unitconversion.org/unit_converter/torque.html )

Start in the middle, gently snugging, working your way out. Snug about 3 times, and on the third time, you'll probably feel the torque wrench clicking ( or the dial will be at 270/22.5)
warwagons suggested pattern is:
Tightening sequence:
11 7 3 1 5 9
12 8 4 2 6 10

Matters not which side you do first, just go middle out.