383 = no love

a lot of those 383 roadrunners were just driven by teenagers as delivered..in poor tune.
A 383 with its' big piston / short stroke needs to rev to make good power in a heavy B body
...Good tuning and timing with gears usually woke them up.I remember a white RR in '68 that was stock with slicks and 4.10's running in the high 13's at our local strip which was fast back then.