360 magnum. 1 piston lower in cylinder??

AJ wrote
"But I'm still going on the assumption that your Crane HV260-2 is a 260 advertised duration cam"
That's at .004 roughly equivalent to a 256 comp or 248 Mopar/ Engle (Mopar Perf/ Engle would have more area under the curve)
OEM 248's about the same- Think of it as a stock 360 cam advanced
270 Hughes/ Engle/ 272 MP would be MUCH bigger- like an effective 20 degrees bigger (and bigger than the popular 268comp)
cam may not be degreed properly, should have all kinds of low end then runout of gas because it's not a fat cam- should run forever though (correct springs, oil etc)
is there a cranking compression results available?