Originally Posted By 62SAVOY
Originally Posted By Clanton
Originally Posted By EchoSixMike
BCR girdle and maincaps, that 8-71 significantly underdriven on E85 at 9:1 compression. S/F....Ken M
1 to 1 drive is only about 4# on a 440


This is wrong. My 8-71 currently is under driven by 5%. I can go from 20 inches of vacuum to instant 11 pounds of boost by flooring it. Feels good too pulling hard. Do not see me needing to over drive it by swapping the pulleys. A race car driven on the street but power and giggles when I want it.
The boost recorded is dependent on many things,You got 11# I got 4#.

GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/