In need of an education..340 vs 360.

640 plus HP stock bore and stroke 360. Here are the specs from another forum.

"The specs on this last motor are:
Comp Roller 281-638 roller (PN 23-732-9)
Ross 11.5 pistons
Bill Miller aluminum rods
Edelbrock aluminum heads (mild Indy porting)
Edelbrock Victor Intake (#2915)
Barry Grant Demon carb. (doesn't say what size)

With the Victor it made 602hp @ 6,900 rpm and 478 lbs-ft from 5,400 to
6,200 rpm.
With the Performer rpm it made 43 more hp @ 3,200 rpm and stayed even to
6,200.
Above 6,200 the Victor made 45 more horses.

Herb finished with saying, in a 4-speed or lightweight (2,400 - 2,600
pounds) car the Victor would be faster. In a 3,000 pound bracket car, the
Performer could be faster. (notice the words would be and could be).
Then they took off the Edelbrock heads and installed the Edelbrock-Indy
version and made 630hp@7,100 rpm and 500 lbs-ft @ 6,100 rpm. But they
didn't say which manifold they used."