ok so i bought a pair of used 272's and i was wondering , how am i going to know which one is the intake and which one is the exhaust? are they stamped? does it matter? i thought it mattered because u can buy an intake or exhaust cam seperatly . so someone please chime in and help a brother out. thanks.

 

Intake cam has more lift.

IIRC, the intake is 10.8mm and exhaust is 10.2mm, but don't quote me on that.

Eric

 

The Exhaust cam has 2 notches at the end that the CAS bolts to.

 

ok whats the CAS? so they can only go in one way?

 

CAS=cam angle sensor.

 

yes, both cams have bolt threads for the cam gears, the exhaust cam has threads on both sides.

 

Ok Thanks

 

Aren't the part numbers etched into the cam shafts as well?