Reply to "Seeking camshaft recommendations for a street performance Longchamp"

George PAdmin.

Food for thought.

Crane Cams has an off-the-shelf hydraulic flat tappet cam that is basically identical to my spec, with 0.539/0.534 lift. It should be compatible with your valve spring. The grind number is H-278-2, (part number 523801).

278°/290° duration at 0.004 (advertised)
274°/286° “assumed” duration at 0.006 (assuming 52° hydraulic intensity)
222°/234° duration at 0.050
0.539/0.534 gross valve lift
LSA = 114°
Seated Overlap = 52° (based on the assumed duration)
Intake lobe centerline = 113° ATDC (install 2° advanced @ 111°)

1/30/1912:04 AM

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