Quote:

should be a date on the right side of the block toward the rear, or a p/n or date on the intake manifold somewhere.

mine also had some stampings on the drivers side intake rail, rear, right next to the distributor.

Bolts thru the valvecovers WAS also on the later motors.. My 65 has them.





right side meaning drivers side rear? also was the dual quad option only those two years 57 & 58? if so then the intake should have that date on it. Thanks