Full Force

Myself and all us locals been using cam motion for years, Never seen an issue... Not saying that it can't happen and I am not sure future direction yet, but at least they stepped up and offered, what was issue with yours besides spec? Never ran you can't blame cam motion... People think they don't do BBC stuff much but they do, for many years but focused more on Ford and LS due to high sales, they do a lot of cams for BBC though, this info came from others besides can motion.

sutphen 30

said it back in the beginning.

vintage chromoly

Are you guys looking at the dark line on the far side of the pattern being indicative of the lifter bores not being perpendicular to the lobe?

If so, do you guys think it's the bores not being "square" to the cam journels or do you guys think the cam has a slight taper to it?

Also, pretty cool that cam motion is offering to pay for two cams!
Slippery slope for them, as tbis could open up a cam of worms with other bob cam customers wanting the same.

Full Force

Talking to a few last night, if bores were the issue I would be digging all around especially on the nose...

MILD THUNDER

What are the thoughts, on using a .700 wheel lifter, on a cam of those specs?

Full Force

My fault lol

SB

A bigger wheel increases lifter acceleration rates. When using more agressive cams, always best to ask the cam grinder if changing to the larger wheel size is okay.

Black Baja

I don't think the .700 wheel helps matters when you have an Inversed Radius lobe. The larger diameter wheel is better however I still don't think any of that is the issue. I think it all goes back to the finish on the cam. If you hold a Cam Motion cam next to any of its competitors it's plain as day that they are rough.

MILD THUNDER

Isn't the reason to go to a larger body lifter, and accompanying larger diameter wheel, to allow more aggressive cam profile? While the larger wheel may accerlate the valve quicker off the seat, I think it can also slow it down over the nose.

Who's running .700 lifter wheels on big stuff?

I've always been told that if you run a cam, designed for an .810 wheel, and go to a .750 wheel, things may become more unstable quicker.

MILD THUNDER

I agree. It was more of a general question. Just seems like going up in a cam's aggressiveness, and down in lifter wheel diameter, is a lateral move. A basic old .350 lobe lift std diameter bbc cam, is quite a bit different shape than a .400 lobe lift std diameter bbc cam. They did it with solids forever with no issues, but I don't recall many solid roller lifters with .700 wheels, and they also had lash ramps in the lobe.