Restored car, 67 GTX, stock crank and rods, 2355SP six pack style pistons, 440source aluminum heads, probably Holley SD intake, stock HP manifolds, 4-speed 3.54 gears. Looking for a smooth idle and mid range power. Also I want to use stock valvetrain so probably need a cam under .500.
the summit 6401 would probably be best for your compression/cylinder pressure. the crane hmv278 is nearly identical. both have a 114lsa but the summit cam will close the intake valve a little later because it doesn't have as much advance ground into it. no performance upgrade cam can use stock springs. the stock springs get into coil bind quickly and will cause engine damage.
