"Cliff - The engine has HS 1.5 rockers and the SP cam has these specs:
Magnum Lobes 3111B & 3122B
.3770" / .3800"
286/289 rated at .006" tappet lift
230/236 duration .050"
.565/.570 lift
112 LS
Degreed at 107.5 ICL"
Good news as it will make more power than the 281/287 @ .006" version. W/O high ratio rockers and ICL at 107.5 it will make less peak HP than my first estimate, but still easily over 500hp and 575tq.....Cliff
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https://cliffshighperformance.com/
73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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