273 for early A

I'd say both "stash" cams are a bit large for your intended usage. If you look at 302 head flow numbers, not much advantage of going past .450 -.500 lift. One of my friends 273 dyno'd 260+ HP with 2 barrel pistons and an E-4, .425 lift and 216 duration, cam, Commando intake and distributor, 67 heads, and a 600cfm Edelbrock carb.

Shady Dell Speed Shop