273 Modification

Max1196 said
When was the change-over for the intake manifold bolt angle? I see there's an edelbrock intake being used, did the heads get swapped out too, or is there an early ede' available for the early design?

The change occurred between the 65 and 66 model year.........65 is odd angle, 5/16 bolt, 66 is same as all other LA engines and 3/8 bolt