CS Grind Cam Shaft for Zongshen 625

Big Block Clones LLC Verified independent store

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CS 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 5 4lb single springs, with a billet rod and flywheel. Torque peak with this cam will be around 4,000rpms. 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: 44.0 BTDC 87.5 BBDC Close: 78.6 ABDC 51.3 ATDC Lift: .265" .265" C/L: 108.0 ATDC 108.0 BTDC DUR @ 50: 225.5 Deg 236.8 Deg Show more