||09-21-2006 10:46 AM
327 sbc carb size ?
I have a .040 over large journal 327 in my model A hot rod, 350 transmission, 3.00 geared nine inch rear. Motor has, 4.65 lift cam, MSD ignition (no vacuum advance), performer aluminum heads (70-170), performer manifold, 600 cfm carb, lakester headers. I have 2500 miles on it since May when I finished the build. So far I'm happy with the results. We just put 600 miles on it, my gas mileage was appoximatly 15.5. The timing is 32 total (12-20). I know it's running a bit rich. I changed jets and rods as per Edelbrock chart but it seems to run best at factory settings. I'm wondering if a 500 cfm carb would be more suited to this motor? I was running about 2650 RPM to get that mileage. Any suggestions?
||09-21-2006 11:47 AM
Suggestion #1 - add the proper vacuum advance to your distributor, it will increase the VE of the motor while you are cruising. I don't think the carburetor is much into the equation at this point.
||09-21-2006 02:42 PM
Carb size is about right for the type of driving you are doing.
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