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Any help with a part number, or the specs of the cam would be great. Playing around with dyno software and I would like to know what I'm dealing with.
I did find one Melling part number, but its a 196/209 duration that wouldn't make 325 hp with the rest of the specs.
Any thoughts?
The orriginal cam from my 454 would not come close to supporting the 330 HP that Indmar claimed it made, and a friend who has dyno'd many a 454 from the 70's jetboats told me the best he saw them make was about 280 HP, which is about what mine made built on Desktop Dyno.
Thus, you may not be making the advertized 325 HP.
What gets me is if you call up and order a cam for a vortec 325hp, its the same 197/206 roller that is spec'd for everything back to 1987. I agree, that cam won't make nearly 325 hp.
Anyway, the long story is as I'm building my 2 piece RMS 350 with the flat cam, I find this bargain on a vortec roller longblock reman. Now all of my research on cams has to be redone :(
There aren't nearly as many options for aftermarket rollers as there are flats. Now I gotta go with more duration and separation to get the same power and I'm not happy about the higher idle I'll have to use.
Check the Crane CompuCam Line if you are looking for OE style roller cam and lift that is acceptable with stock Vortec heads. They have a few grinds to look at.
If you are not limited by lift go to the Comp XM hydraulic roller line. These will make more power.