I have this carbed Chevy 350 c.i.d. L31-R 4-bolt main with one-piece rear main seals. nodular-iron crankshaft, powdered-metal connecting rods, and hypereutectic aluminum pistons.Vortec cylinder heads with 1.94 in. intake valves and 1.50 in. exhausts, and 64cc combustion chambers 9.4:1 compression ratio. roller cam that has 0.414 in. of intake lift and 0.428 in. for the exhausts. Duration at 0.050 in. of lift is 191 degrees for the intakes and 196 for the exhausts, with 111 degrees of lobe separation.

I have this roller cam on hand from Lunati, total lift @.050 .503 in. .503 ex. with 1.5 rockers. Duration @ .050 is 219 in. 229 ex. lobe separation is 112.

Since I have this new cam on hand for pennies. Any reasons why this wouldn't be and improvement. Of course will be changing springs/ retainers. car is a 56 with a 700r4 with 373 rear gear, 2200 convertor.