Carburetor choice

AJ/FormS said

how many cc in those alloy heads?
or what is the true Compression Ratio?
which whiplash?
what stall?
What car, or what weight, and/or what tire height?
What if any, is the problem or reason for going down this road, and/or what results are you expecting?
On my 360 is a 750 Holley DP, and I love it. But it's a totally different combo from yours.

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THIS ^^^^ THIS ^^^^ THIS ^^^^^

AJ askin the pertinent questions!

Bigger isn’t always better. Like said above, you probably gain 5-10 hp up top but possibly loose a tad of throttle response.
It’s also a bit hard to make a recommendation on just which Holley is best for any one application. However, 318willrun IMO made an excellent suggestion.

The 4160 style, 3310 model is a 750 VS carb that can be upgraded later if you want to a 4150. There easy to work on, generally pretty good OOTB, easy to tune.

You’ll need a few things to go along with it.
A Chrysler throttle adapter
Jet kit
Secondary spring kit
You can wait a bit to tune the secondary side which doesn’t use jets but a plate instead. Just unscrew it and the. Re screw in the new one. There not as Precise as the Jets, but it gets the job done. You’ll get a lot more out of tuned primaries and the proper spring to open up the secondaries at a good time in the RPM band.

I think this would be the best all around “Holley” to learn on and start with.