I have a 1971 440 GTX.
Only headders and intake
It cranks out 425 HP with a 850 Holley
It cranks out 435 HP with a 780 Holley.
for carbs BIGGER in NOT BETTER
No jlb00h you are not retarded. The first thing most guys do for hot rodding is bolt on the BIGGEST carb. MISTAKE.
Nothing like a 850 cfm on a stock 350 chev.