How much is too much dual quad

space duster 383 said
Agreed, is it just a waste of fuel, or a matter of not using a WOT, or would it bogg to engine down. I wouldn't be asking if the engine had not had the heads, headers, digital ignition, cam all added. 650 to 750 would be my choice for a stock hp 383. Knowing 2 quads sharing 1200 cfm is probably only equivalent to a 900-950 single 4 barrel, leaves me with the question. Do I have a chance with two 600's? Can I re-jet them any to make them work? Am I just wasting my time?

Those two 600's are WORTHLESS. You can use 2 650's and be way better off.

The number one killer of TR engines is over cramming them. Number two us under carb'ing them.

Get on the phone with a true carb guy, like Thumpr carbs in FB or Mark Whitener or BLP or Braswell and let them fix you up with two good carbs.

The 1850 Holley was garbage when it was drawn up, unless it's some dead stock deal. And then it's useable.