Holley 850 DP or 750 vac sec for...........

my 440. Specs: @ 10 to 1 comp (6200 ft though)
Summit cam 224 @ .050
3500 stall
3.91 gears
Hedman headers 2.5 exhaust
Performer RPM intake
452 heads.
Car is a 64 Dodge @ 3800 lbs.
I'm leaning towards the 750.
britt

I think a 750 will be more streetable and tunable, not to mention better gas mileage! It's usually better to lean on the conservative side.

750 vac secondary would be my choice unless it is a bracket car.
Now if you asked about an 800 DP I think that would be the shiznit.

I vote for the 850 dp. I had an 800 DP on a 440 with a 222 @.050 cam 3.23 stock converter, and at over 4200 lbs. It ran better than with my 3310 or 750 AFB.

Thanks. I was thinking about a new 800 THUNDER AVS but I saw these carbs on craig's list for cheaper so I was Thanks.
britt

Quote:

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I vote for the 850 dp. I had an 800 DP on a 440 with a 222 @.050 cam 3.23 stock converter, and at over 4200 lbs. It ran better than with my 3310 or 750 AFB.

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With the 3.91's and converter I was thinking it could use 800cfm with the smaller diameter throttle bores(same as 750/less than 850)and still have decent part throttle response.
I will agree it is hard to beat a well tuned 750 vac sec on many applications(my 496 barge included).