Cam design limitations
Exactly IQ. The ramp will become to steep, the lifter has a chance that it will dig into the lobe.
Once before, you barked at me about my sig and made fun of it about roller cams for a 318, which had no place in the argument to begin with, and now, someone else mentions roller cams for a /6.
I guess you ain't shopping around so damn well.
No; you're apparently hitting the bottle too much, because you're totally wrong about my problem with your sig line. My problem with your sig line was that you were making a blanket recommendation for people to "get a roller and forget the ZDDP" when that is simply not possible for those of us (and, there are a lot of us) with slant 6's, BECAUSE NOBODY MAKES OR HAS ANY BLANKS FOR THOSE CAMS. NOBODY... and yes, I have shopped around... a lot.
Talk about IQ...
If someone is willing to spend $1,000.00 up front to get a roller cam BLANK ground, they're off to the races, but then, they have to pay for the cam grind, which is a can of worms because there are no "masters" that are roller tyappet, "slant-six-specific," to use for grinding the lobes. They'd probably end up with a small-block Chevy roller profile, which might work... but probably wouldn't be optimum.
Those cam blanks would have no center gear to drive the distributor OR oil pump; a different ignition system would have to be built (crank trigger???) and an externally-mounted, belt-driven oil pump would have to be installed.
A hell of a lot of negative factors, (to say nothing of the money involved) JUST to get a roller cam.
THAT was the situation that engendered my comment about your sig,; it was a blanket statement that seemed not apply to everybody... but didn't say "if it's feasible.'
Maybe you didn't know all that when you installed it as a sig line. If that's the case, I apologize; i'm sure you're intentions were good...
I have another car ('72 Valiant) with a 360 Magnum (factory roller) engine with a Hughesengines roller cam in it, and I love it!!!
So, I really agree 100-percent with what your sig line says; it just doesn't fit everyone's circumstances.
I don't know anything about cam/profile/rate-of-lift limitations, and I appreciate your comments on that score... I'm learning.:violent1:
Oh; my other vehicle is a stock, '93 Dakota 318 Magnum (roller cam) pickup... I wouldn't have mentioned it in my rant about your sig... Like I said; I LOVE those rollers!!!
Thanks again for the good info!
