with slight banking wide torque range ford 351w 1969-1995 big block chevy 396-454 ... well in restricted engines with stock manifolds 2bbl carb com-35-622-5 mechanical ... for 1/4-1/2 mile track with limited intake oval track mechanical flat tappet ... throttle response noticeable idle needs intake headers 9.5 comp ratio com-11-244-4 ... camshaft only 3 lift .570 575 duration 288°/304° 112 lc rpm range 2,500-6,500 jet ... impeller 9.5 comp ratio needs headers intake for perf use hydraulic flat tappet ...
b impeller 10.1 comp ratio headers intake race use ford/mercury 221-302ci small ... type boat rough idle 9.5 comp ratio ford 429 460 512ci 385 series 1968-97 com- ... 2,000-6,200 good for jet boats need manifold likes headers 9.5 comp ratio com-34-245 ... camshaft only 3 lift .580 585 duration 288°/304° 112 lc rpm range 2,200-6,500 good ... for jet boats need manifold likes headers good for skiing perf use ... lc rpm range 1,600-5,800 needs improved intake headers 3.50-3.90 gears 2,000 stall 9.1 ... only 3 lift .564 570 duration 278°/288° 111 lc rpm range 2,000-6,200 good top ... end power needs intake gears headers 9.5-1 comp 2,500 stall ...