[6600DURAMAX]

Mailbu, you could be correct, I am not sure what it would look like if it was clearenced though??? Dont have a standard block to compare to.

Talked to the guys at RPM yesterday and they say it is their crank sold under a different vendor since it did not have the RPM logo. GREAT Right???? WELL last night I just couldn't leave it alone that it still probably was to good to be true. So I attempeted to measure the stroke for myself without pulling the head. I did this by measuring how far the bottom of the piston shirt moved in the cylinder. I think this should give me the stroke CORRECT??? Well I came up with 4'' WTF ??? Looks like I just have a high dollar forged stock stroke cranks So I guess there are cranks out there with the same number as the RPM cranks that are NOT 4.5'' stroke?

I am really bummed but shouldn't have expected more than that I guess?

someone let me know if they think the way I measured was incorrect, maybe that will shine some light onto this day.