again, i'm no expert. the 250 w/ hei i was talking about i rebuilt myself and put in a "stock" cam. i found out while doing research on the clifford performance cams for my 292 project that these other "stock" cams like the sealed power one i bought for my 250 don't even have the same duration and specs that the 66 manual says the true stock ones do. mabey that accounts for some of the difference in timing. clifford told me to set the timing 23 to 27 deg i think, it's written down at home. i know that is apples and oranges but my point is prob whatever cam jasper used it isn't exactly the same as true stock. when i do my startup in a couple of weeks i will start out on the low side of those #'s so i don't have a flamethrower for a carb. that is i hope. :rolleyes: