[Redcap]

Originally Posted by Schralper

750 on a 454? WAY to small if you're goin to rev over 4K, great off the line but choked off real quick.
If you've got a aggressive cam & 3K stall sounds like you might be setup for a slightly higher rpm running.
I'm running a 750vac sec on 400sbc ( in Burban) & 850DP on 383 w/ 3K convertor (in 68 C10), 650DP on last 350 (in 78 K10 w/ 35's)
Vac sec is easier to tune so if you don't wanna play around w/ carb go w/ vac sec.
600cfm's are commonly used on 302's
Volumetric efficiency vs carb size never takes convertor stall rpm & real world driving
Holley lists 454cid total airflow 800 cfm @ 100%VE @ 6K rpm
I'd look into 850 vs 750 carb
Also w/ that cam check your timing, if you're running HEI you're gonna have issues.
HEI sucks w/ non stock cams & getting the timing right.

Hilarious.