Ford xc posted:The cam I bought is not in yet and I do have a chance to change it..... any suggestions??? I'm looking for a healthy 400 + at the flywheel.
I consider the cam below the best off the shelf street performance cam for an engine with 2V heads and 3.500 inch stroke. The cam has 112° lobe centers, I would prefer 114° lobe centers, but it gets the IVO and overlap in the ball park, the engine will have enough vacuum for the FMX and power brakes. Peak horsepower will occur at about 5500 rpm.
Crane Cams HR224 (part number 529551)
Hydraulic roller tappet camshaft
286°/294° duration at 0.004 (advertised)
280°/288° estimated duration at 0.006
224°/232° duration at 0.050
0.586/0.609 gross valve lift at 1.73:1 rocker ratio
LSA = 112° Overlap = 60° (based upon estimated duration)
Intake lobe centerline ℄ = 111° ATDC
The lobes are asymmetric thus the intake lobe “max-lift” occurs at 107° ATDC
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Seated valve events (based upon estimated duration)
EVO = 77° BBDC
IVO = 29° BTDC
EVC = 31° ATDC
IVC = 71° ABDC
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Cam Timing: advance this camshaft 2°
Intake lobe centerline ℄ = 109° ATDC
Intake lobe “max-lift” = 105° ATDC
Thus advanced the intake valve will close at 69° ABDC.
Set the compression ratio at 10.2:1 or less (equivalent to 7.8:1 dynamic compression).
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