Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Thanked 964 Times in 749 Posts
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big difference between a 7000rpm SBC with 25% more valvetrain and running 200lb+ valveprings and the lil ol cummins that spins about half the rpm with 25% less valvetrain and 75% less spring pressure (which is what causes your parastitic loss/drag on the cam)
I think your barking up the wrong tree, its alot of money wasted for nothing. comparing a gasser valvetrain to a diesel is in no way comparing apples to apples, a gasser looses ALOT more power in the valvetrain than the cummins ever would. Theirs a reason why you dont see everyone with full roller cummins's, though im sure thair are a few out there, but are likely the guys with $80,000 engines spinning 6000rpm+ and running billet aluminum blocks!
2015 3500 laramie dually. 6.7, aisin, 4.10s, bone stock... (for now
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2014 forest river XLR 395amp, 42.5ft of truck killing, wind catching, toy and booze hauling, fun...
Last edited by ykdave; 02-15-2009 at 03:48 PM.