A 500 Holley 2bbl does not flow 500 cfm, it is closer to 350 cfm. It will also support about 350 hp with just 5 psi as done on my 250. I would suggest a 390 double pumper or a a 600 as there is little to choose from inbetween. Tom
Inliner Member 1716 65 Chevelle Wagon and 41 Hudson Pickup Information and parts www.12bolt.com
