Joes95GT said:
FACT - FMS cams are outdated. Plain and simple. NO ONE uses symmetrical lobes anymore. No one. If I were on a budget, I'd save more money.
$0.02
Joe
I took out all of the tech stuff about lift, lobe separation, yada...yada...yada cause I was hoping to compare why one would go with the GT40 stuff (old school) or the newer stuff such Edel, TW, AFR and the like. Money is obvious but not always the only motovation of our decisions about the parts we pick for our combos IMHO.
Like Joe I made the statement about the alphabet cams being out dated and some thought not.
My thoughts on the alphabet cams being out dated was cause the heads (260 - 302, E7's, GT40's, GT40P's and the like) those cams were made for have not changed very much in years. The exhaust on all of those heads needed help a good bit and the alphabet cams were cut in such a way to crutch or prop up the weak exhaust flow of them.
The newer heads don't have the exhaust probs. You would not want to use old school cams in these heads as they would leave power on the table.
I thought it would help Rylan and others if we compared the old school stuff to todays technology.
With that being said, an apple to apple comparison would be ... old school GT40 heads which Rylan now has and an old school cam that is a good match for those ported GT40 heads ... vrs ... todays street heads and a good matching cam. It does not have to be a custom cam.
The big question is what would be the difference in RW hp & tq dyno numbers as well as low end torque cause Rylan and most people want good low end power for their street car.
Again, I am trying to talk in general terms and not get bogged down in the details or which head or cam is best.
Dyno charts would be great and we got them all over the place for the newer combos but I didn't find much on the GT40 combos last night. Maybe some of you have some saved or know where to go get them.
Later
Grady