[cycleguy55]

Originally Posted by Paul Kane

Assuming the valve train hardware between the two heads is identical, and both heads are passenger car type (ie, not A460, etc) then the weight reduction will be about 60 pounds.

Just dyno'd an engine that made 1.05 hp/inch with a 233"@050 custom flat tappet cam, 4150 carb, as-cast dual plane, and unported Edelbrock heads, pump gas. The same results could have been fulfilled with ported OEM iron.

For a low rpm responsive 385 Series, I'd recommend stroking it. Even a little ol' 4.14" stroke 500-inch engine will meet the needs, desired hp numbers, on pump gas with a pump gas friendly compression ratio. And with the right cam the torque number will far exceed the hp number (the above noted engine made 1.22 ft-lbs/inch).

I note how you left out the contextual "if you want to have "a nice tame driver" with a 2.50:1 final drive ratio" from my comments. That context is an important factor in cam selection, as you well know, yet...