WhiteWindsor

On holley's site they have a formula for which carb. CID x engine rpm / 3456

408x6500=2652000 / 3456 = 767 cfm

So as stated, a 750 might be a little small. I would go with a 800-850 and adjust accordingly.

91bigredgt

actually i was hoping you would chime in fast black i really liked ur setup when i was planning for efi thats what kinda got me on the carb wagon but what really did it was the most recent issue of 5.0 mustang there was a 408 hatch that was carbed and the engine bay was so clean looking

my77stang

you guys are still missing the biggest part of my point. there is a huge difference between a racecar that stays at 6000-7000 rpm during the course of a race, and a car your going to drive around town which will see those rpms for literally .00001% of its runtime.

because i dont slap 750's on stock 351's? yousir, are a dumbass

rust_stang

thanks man.. its good to have power

code3GT

I have a Pro Systems carb. It's based on a Holley 4150. They will build it to your specs and do an awesome job. They aren't cheap, as mine was just $900.00, but their customer/technical support, quality and product is well worth it.

OhioMachIRunner69

If this thing is going to see the street then you do not want to "over carb" a single plane intake or it will run like crap. If its going to see the street then a 750 will be fine. An 800 might be a decent compromise for a street/strip car if its going to see more strip than street.

my77stang

^ thank you

393Bird

I am using a Quickfuel 750 HP on my 393, and love it. I used it for NA, then had them redo it for blow through to use with my Vortech. Works perfect.



I am converting it to E85 now using quickfuels E85 metering blocks.