360 into 64

64barracuda said
Sorry it is 273. I can believe this but are you sure the port difference won't matter.

360-stock with 4bbl out of a cordoba

the 273 manifolds will choke even a stock 360 some but if its just a cruiser who cares. may also have to slightly grind the head or block in a small area to get the driver side manifold to sit flat.