340 A body versus 383 B body

383 magnum w/hp manifold in an A-body will mop the floor with a 340 A- body, 350 Nova /Camaro, 351/390 Mustangs, period.
I did in 1979. :D
Sorry, NOT. Owned them all raced them all. You ever run a LT1 or a 327/365. I've had them also these little small block chevys kicked ***. Sorry the stock 383's magnums were just plain heavy dogs as were the 390 fords. Now I know they can be made to run my freind with his RR all steel 383 went 11.20's in the early 70's.