1967 383 'Commando' vs 'Super Commando'

Teak,

NHRA calculated the 1967 383/280 HP in an A-Body with 'stock exhaust' and de-jetted
Carter AFB (575 CFM) - to a correct 255 Horsepower at 4200 RPM's.

The same 383 in the B-Body, with the better flowing exhaust manifolds and
'intermediate' exhaust pipe system was calculated to come in at 270 HP at 4600 RPM's.

1967 383 B-Body, Right Side Exhaust Manifold #2532464


1967 383 A-Body, Right Side Exhaust Manifold #2863900


1967 383 B-Body, Left {Driver} Side Exhaust Manifold #2532626


1967 383 A-Body, Left {Driver} Side Exhaust Manifold #2899002