CM Grind Cam Shaft for Zongshen 625
$135.00
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CM grind cam for the popular Zongshen 625cc single cylinder engine ground by DynoCams in North Carolina. The valve lift with stock 1.45:1 ratio rocker arms is .384". We recommend 54lb single springs, with a billet rod and flywheel. Torque peak for this cam will be around 4,500rpms. Use big block clone springs with the GB620 engine. *Keep checking back with Big Block Clones because we have performance parts coming for this engine! Intake Exhaust Open: 52.4 BTDC 86.9 BBDC Close: 89.4 ABDC 51.5 ATDC Lift: .265" .265" C/L: 108.0 ATDC 108.0 BTDC DUR @ 50: 236.9 Deg 236.5 Deg
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