Junkyard 5.9L Magnum + Edelbrock LA heads build

MOPEkidD-3 said
OK sounds about right, I didn't understand the "boost compression" on the Wallace Racing calculator but I realized it does mean corrected for altitude so I got the same numbers you did. BUT let's try something else... so a bone-stock 5.9L Magnum is rated at 8.8 SCR and with a stock cam having 62 ABDC intake closing (according to online sources), DCR at 5000' elevation is 6.19. And I know for a fact that even at this altitude a stock 5.9 Magnum has boatloads of bottom-end torque right off idle. SOO if my DCR is essentially the same as a bone-stock 5.9 truck engine I'm thinking the low-end torque should be adequate.

Shoot, maybe that's what Jim was shooting for with my cam? Trying to get the DCR the same as a stock engine? Smart, if that's true...

Or maybe said as 'no lower than stock DCR (and torque), with a gob more lift'. Higher lift to duration ratio tends to be good for street use; several sources for that type of grind. So if you are happy with that torque level and that is the right stock cam ICA number then you will be a happy guy.

62 ABDC for the stock cam ICA seems a bit long however.... but I do see that number here: 5.9L Valve Timing Specs
Is this where you got that number? I see the earlier cams are listed at 80 ABDC.... makes me wonder at what lift value these stock advertised numbers were measured.... I see from your cam card that Racer Brown did them at .008" lift.

So maybe the present rear gear is good enough to be happy with? Better for mileage..... unless it ends up being at or below stall speed a lot of the time.