After flogging the 4412-500 cfm holley, i installed the 7448 350 cfm holley on my modified log. Whow what a difference, the 350 7448 carb is much more responsive to the throttle in part throttle driving. the 350 has 59 jets, 8.5 power valve, orange cam with a .031 accerator discharge nozzle.
Just in normal driving the exhaust note is very consistant with the smaller carb, & the idle mixture is easier to set & just the driveability is vastly improved, especially on a cold start. just for normal street driving the 350 has much improved performance.
I will do a full throttle test at a later date. The top end gains on full throttle acceration with the 500 cfm may not be worth the ease of street driveability using the 7448 350 cfm holley.
I'll keep you informed of further tests. Next is either a stop watch 0-100 or a dyno run to see if the 500 cfm is a gain over the 350 cfm. William
Just in normal driving the exhaust note is very consistant with the smaller carb, & the idle mixture is easier to set & just the driveability is vastly improved, especially on a cold start. just for normal street driving the 350 has much improved performance.
I will do a full throttle test at a later date. The top end gains on full throttle acceration with the 500 cfm may not be worth the ease of street driveability using the 7448 350 cfm holley.
I'll keep you informed of further tests. Next is either a stop watch 0-100 or a dyno run to see if the 500 cfm is a gain over the 350 cfm. William
