Best Carb For a 68 440hp??

[rebelcuda73]

I have installed a 68 440 hp and a 4 speed in my 74 cuda. The 440 has a 509/292 purple cam with 906 heads a edelbrock torker  manifold, hedman elite headers and a 750 holley AED carb. The carb came with the engine and looks good but don't know much about it. Would this be the right carb to use or am a better off with a different carb?? I had read a article in one of my mopar magazines that the 950 holley would be better for the set up I have on the engine right now. I am using the car for the street. Any ideas which is better for what I have?? Thanks

[Oldschool]

If it were mine, I would probably install a Holley 850 hp or a Proform 850.  It runs great I'm sure with the 750, but it is a little under-carbed imho.....  0.02....

[Chryco Psycho]

What you have is one of the best carbs , I would work with it , larger might get you 20 hp at the top end but for most driving situation it will work well , I agree it is small but probably is not worth $600 to upgrade at this point .Just to clarify I would also use a 850 proform ideally but there are other ways to get more HP for $600.

[cudabob496]

ya, if its un-ported 906 heads, then your 750 should be fine, if its dialed in right.

[cudabob496]

I have installed a 68 440 hp and a 4 speed in my 74 cuda. The 440 has a 509/292 purple cam with 906 heads a edelbrock torker  manifold, hedman elite headers and a 750 holley AED carb. The carb came with the engine and looks good but don't know much about it. Would this be the right carb to use or am a better off with a different carb?? I had read a article in one of my mopar magazines that the 950 holley would be better for the set up I have on the engine right now. I am using the car for the street. Any ideas which is better for what I have?? Thanks

A 950 would be way overkill in my opinion.
My 600+ hp 496 is making serious power with an 850 DP!
Heck, for 40 more hp, put one of these on:
www.ramairbox.com

[jhaag]

Stick with the 750. Think of it this way, you spend 90% of your driving time at less than WOT. Therefor the extra cfm from a larger carb won't do you any good. If you were racing and looking for every last HP then go bigger. The 750 will work better on the street.

[cudabob496]

Stick with the 750. Think of it this way, you spend 90% of your driving time at less than WOT. Therefor the extra cfm from a larger carb won't do you any good. If you were racing and looking for every last HP then go bigger. The 750 will work better on the street.

Ya, I had ported 915 heads on a 440, and my Holley 750 DP was more than adequate.

I think some people are pushing 950 cfm carbs just to sell more carbs.

[Chryco Psycho]

Depends on the usage , I have typically used 2x the CI for carb size & I have proven that going larger than that can still improve power even using stock heads with port work , my Duster ran a 1050 carb on a 440 CI build using "only" 516 ported heads & it ran faster than ot had with the 950 on it .

[cudabob496]

Depends on the usage , I have typically used 2x the CI for carb size & I have proven that going larger than that can still improve power even using stock heads with port work , my Duster ran a 1050 carb on a 440 CI build using "only" 516 ported heads & it ran faster than ot had with the 950 on it .

my understanding is a big carb (2 X displacement) is really only going to offer benefit when you are at the end of a 1/8  or 1/4 mile running flat out.
But I have limited experience in that department.