.484 purple shaft grind info.

Mopar performance has used two .484/284 cams. The original one is the -231 and is more aggressive. They later came out with a more "streetable" .484/284 grind.

They also give the centerline and lobe separation for the cam. The centerline is the angle that the intake is at max lift. To find the intake open/close, just take half of the duration (whether it be advertised or at .050) and add and subtract from the lobe centerline to find the intake open/close angles. Then take the lobe separation and that tells you the angle that the exhaust lobe centerline is from the intake centerline. Calculate the exhaust lobe centerline from this and then add/subtract half the duration (whether it be advertised or at .050) to find the exhaust open and close timing.

The "molder / Streetable" cam had less overlap than the -231 grind.

If you need any more info, I can try to look in my archive of old MP catalogs for the specs.