Oval Track cam selection

40418

Cam Style Mechanical flat tappet
Basic Operating RPM Range 4,200-7,500
Intake Duration at 050 inch Lift 256
Exhaust Duration at 050 inch Lift 268
Duration at 050 inch Lift 256 int./268 exh.
Advertised Intake Duration 292
Advertised Exhaust Duration 302
Advertised Duration 292 int./302 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.550 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.571 in.
Valve Lift with Factory Rocker Arm Ratio 0.550 int./0.571 exh. lift
Lobe Separation (degrees) 106
Intake Valve Lash 0.024 in.
Exhaust Valve Lash 0.026 in.
Computer-Controlled Compatible No
Grind Number SPI2-292-302


40418 N/A 290/302 256/268 .550"/.571" 106/102 .024"/.026" 70937 73949 75702LUN
77002 73949K1LUN 93003LUN/ N/A N/A 4200-7500 Solid; Rough idle. Good cam for all out bracket racing in a heavy car. Needs
93010LUN 4500-5000 RPM stall converter or 4 speed transmission, headers, 11:1
compression ratio and 4.56 gearing or better.