Reply to "Bullet Cobra Jet Cam"

This is about as close as I can get using lobes from Bullet Cam's catalog.

• Solid Flat Tappet
• Advertised duration (at 0.020 inch tappet lift) = 276°/284°
• Duration at 0.050 inch tappet lift = 243°/250°
• Gross valve lift at 1.73:1 rocker arm ratio = 0.597/0.601
• Net valve lift at 0.029/0.028 lash = 0.568/0.573
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• ICL = 110° ATDC ..........| An earlier ICL synchronizes air flow capability more closely with air flow demand and makes more power.
• LSA = 114° ..................| A wider LSA reduces overlap, produces a wider and flatter torque curve, improves controllability.
• Seated Overlap = 52° ....| Limiting overlap to 60° or less improves vacuum, idle, low rpm torque and drivability.
• Seated EVO = 80° BBDC | An earlier EVO compensates for a muffled exhaust, improves idle, extends high rpm power.
• Seated IVO = 28° BTDC | Limiting the IVO to 30° or less improves vacuum, idle, low rpm torque and drivability.
• Seated IVC = 68° ABDC | A later IVC lowers the DCR, requires a higher SCR; and can lead to reversion at idle.

(int. lobe F276/345, CRA | exh. lobe F284/3476, CRA)