One member in here has a Lunati cam which is their modern interpretation of the Chrysler HP cam, which he bought from Summit Racing (for a better normal price). Used in a '68 383 4bbl Sport Fury. He likes it a lot. There is a thread in here on it.
The Hughes Cams are supposed to be ground to use the larger Chrysler lifter diameter, which they claim others were just Chevy lobes, or used to be that way. The Comp 268 is a versatile cam. Key advantage to that cam is that the lobes are assymetrical (open quick, close slow) AND hold the valve open for a full 10 degrees of crankshaft rotation (which I discovered when I chucked one into a 440 short block and checked it out with a dial indicator and degree wheel // a normal cam holds the valve at max lift for only ONE degree of crank rotation, for comparison).
As mentioned, everything needs to work together.
In that orientation, the '70 383/330 "N" C-body cam is the same cam you now have. In my '70 Monaco, with 3.23 gears and P225/75R-15 tires and the OEM Carter AVS, it flat flies. It does not hesitate to send the speedometer needle quickly into the "triple digits" area when nudged a bit. Still works just fine in normal driving, too. That car ALSO has the "small" 727 torque converter, from the factory, too, which probably helps a bit. Takes the "1 quart less" fluid amount when the filter is changed. Everything just works very nicely together.
Just some thoughts,
CBODY67
