ricky63 said:
Does any
one know the specs on a lightning cam and a 302 H-o cam:tu:
Factory stock camshaft:
LOBE SEPARATION ANGLE= 114 degrees
VALVE OVERLAP at .050 = -24.4 crank degrees
INTAKE: Valve opening= -12.2 BTDC
LOBE CENTER = 111.1 ATDC so cam has 2.9 degrees advance built in
Valve Closure= 28.4ABDC
DURATION= 196.2 CRANK DEGREES
MAX. LIFT (LOBE)= .25846"
NET VALVE LIFT (1.6 rocker ratio)= .41354"
LOBE AREA= 18.5 IN DEGREES
EXHAUST: VALVE OPENING= 40.4 BBDC
LOBE CENTER 116.8 BTDC
VALVE CLOSURE= -12.2ATDC
DURATION= 208.2 DEGREES
MAX. LIFT (LOBE)= .27634"
NET VALVE LIFT= .44214"(1.6 ratio)
LOBE AREA= 20.67"
And for the stock Mustang 5.0 HO camshaft:
INTAKE AND EXHAUST LOBE SEPARATION ANGLE: 115.8 degrees
VALVE OVERLAP AT .050= -19.3 CRANK DEGREES
INTAKE:
valve opening: -9.6BTDC
Lobe centerline 115 degrees(ground with .8 degrees advance)
valve closure: 40.7 degrees ABDC
duration: 211 crank degrees
lobe lift .2774"
Valve lift (1.6 rocker)= .44384"
Lobe area= 21.36" degree
EXHAUST:
valve opening: 42.3 bbdc
lobe center: 116.6
valve closure:-9.6degrees
duration: 212.7 degrees crank degrees
lobe lift: .27736"
Valve lift: .44378"
lobe area= 21.45 in degree