Having trouble finding a general consensus on " safe " air fuel ratios for
blower motors. Not looking to squeeze a tenth, or every ounce of horsepower out of it, but without the benefit of a dyno just looking for a
starting point from people more knowledgeable than I am.
Particulars : 468 Chevy 7.5 to 1, solid roller 640 lift, 256 dur.,alum.heads
871 ( no intercooler ) 2 825 cfm demons, msd 6al and dist. @ 32* total
by 2,600 rpm. Trying to stay on pump gas.
Making 8 lbs. boost @ 6,100 rpm in a flat keel Daytona
with a mag bronze " B "
Have been pointed in the direction of afr's of :
Idle - 3,000 rpm no load 13.5
Cruise - 12.3 - 12.5
WOT - 11.3 - 11.5
Sound reasonable ? Thanks for any help.