Reply to "Questions regarding George's 275/285 Custom Street Cam Profile"

Here's my other idea. This single pattern cam raises peak horsepower by about 500 rpm, into the range of 6500 rpm. There's more overlap than the first one, the intake valve opens even earlier than the first one, it will lope harder than the first one. The torque curve has been moved 500 rpm higher, the low rpm performance is declining as is intake manifold vacuum.

Application: Ford 351 Cleveland solid roller tappet street cam
Grinder: Comp Cams
Lobes:
High Energy Street Roller
Intake #1476
Exhaust #1476 (same)
106° ATDC intake lobe mathematic centerline
116° BTDC exhaust lobe mathematic centerline

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288°/288° advertised duration
244°/244° duration at 0.050"

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0.3666"/0.3666" lobe lift
0.020”/0.020” lash
0.634”/0.634” theoretical valve lift (1.73:1 ratio)
0.614”/0.614” net valve lift [(lobe lift x 1.730) – lash]
0.603”/0.603” factual valve lift [(lobe lift x 1.70) – lash]

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Indicators
44°/44° intensity (advertised duration – duration at 0.050)
35° major intensity claimed by Comp Cams
Overlap at 0.050” = 22°
Lobe separation angle = 111°

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EVO = 80° BBDC
IVO = 38° BTDC
Overlap = 66°
EVC = 28° ATDC
IVC = 70° ABDC