Marco
Active Member
Hi everybody,
I've got a question about a holley 4 barrel base plate underneath a impco 425 (LPG mixer) on a 400ci mild street car.
I've been thinking about this for a while now, the impco 425 flows about 460cfm max, now the holley base plate underneath it is a 850cfm (1-3/4 throttle bore) the car runs alright, idles perfect at 600 rpm (i've got a real small cam).
Would replacing the 850 cfm with a 600cfm base plate increase mileage& low end torque? The impco is the resticting factor so in not sure if replacing the base plate makes a difference?
Hope some of you could help me out.
Thanks in advance!
I've got a question about a holley 4 barrel base plate underneath a impco 425 (LPG mixer) on a 400ci mild street car.
I've been thinking about this for a while now, the impco 425 flows about 460cfm max, now the holley base plate underneath it is a 850cfm (1-3/4 throttle bore) the car runs alright, idles perfect at 600 rpm (i've got a real small cam).
Would replacing the 850 cfm with a 600cfm base plate increase mileage& low end torque? The impco is the resticting factor so in not sure if replacing the base plate makes a difference?
Hope some of you could help me out.
Thanks in advance!