re: what carburetor to get ???

[crankshaft]

I recently inquired A tech over at summit and they wrote back saying " Just FYI, the 1965 327ci 350hp engine originally came with a 585cfm vacuum secondary carburetor, and it was a real killer engine.

Either one of the following would do a great job.

For a 650cfm, take a look at http://www.summitracing.com/parts/HLY-0-80783C/ .. Note this carburetor has a traditional finish, electric choke, dual inlets, and adjustable floats

For a 600cfm, take a look at http://www.summitracing.com/parts/HLY-0-80457S/ . Note this carburetor has a shiny polished finish, electric choke, and has non-adjustable floats.

Hope this helps.

If I go to big in cfm , wont that cause a problem in running too rich and hard on gas ?

[Hank70SS]

I believe too big and you don't have enough air velocity through the carb, doesn't atomize the fuel as well. I'm no carb expert but that's what I heard anyway.

[BillsCamino]

I've got a 600 Road Demon that ran awesome on a 292 (283 +.060"). Very crisp throttle response.
You mentioned "lightly modded"...have you considered a Q-jet? Great for fuel economy too...if 'ya keep your foot out of it.
Contact Von Cassidy...he can hook you up to your specific application.