vacuum secondary or douple pumper
I have always ran a single plane intake Victor JR. and 750 DP (383) or 850 DP (454) on my engines. But both of these engines had long duration mech. roller cams, 3500 stall converters, and 4.11 in my 67 Camaro 454 and 4.56 in my 75 Camaro 383. Neither of these cars were daily drivers. I have my truck as my daily driver.