Did not want to muddy up the other thread, so here goes.
1st have you driven or ridden in a truck with a properly working non stock cam shaft?
2nd if the lower is a true statement why is it that in just about every form of motor sports that the stock camshaft is replaced when higher rpm power is being sought after.
3rd why is it that the cummins and Dmax guys change camshafts if they don't have a high RPM fuel issue??????????????
4th how many stock camshaft trucks are pulling to 4200rpm?
quite a few...I could show a graph showing the acceleration curve of one particular truck...in every gear up to ~4700rpm...the change in acceleration isn't hurt too damn much by the stock cam as evidenced by the continuing rise over 4200.
Point of the post is, I read too many unfounded opinions based off of hearsay or because so and so tried one and it did not work.
I tried a bunch that did not work and finally found a combination that did work, it's called R&D.
Unfortunately there are very few people that know how to properly R&D to get good info.
have PERSONALLY pulled OUT nearly a dozen aftermarket cams, reinstalled the OEM cam, made ZERO other changes to the truck...and pick up ~100hp.
over & over & over.
Will a cam help? absoFRICKENlutely.
Will most ALL aftermarket cams that are/were available for the 7.3 hurt performance? absoFRICKENlutely...
we have a preeeettty good "library" of cam profiles that have been installed (usually by folks prior to becoming our customers)...and it is quite obvious what the problem is, with 99.9% of the cams that were ever sold as a "performance" part.
Even the cams that don't "suck as much as most" would have to have been engineered & tested to suuuuch perfection to make any noticeable difference on a stock (electronic) truck, that it isn't even funny.
And even IF there ARE cams out there that ARE better than stock...EVEN BY A WIDE MARGIN...WTF is going to be proven when the stock PCM
tosses you the bird at 3x00 rpm?!?
Dave, your trucks & customers trucks run exceptionally well. but unless you plumb injectors in BEFORE the intake valve...there is much more to lose by installation of an aftermarket cam than keeping it stock.
(not a "dig") just my opinion.