Thread: "THE" cam lift & duration comparison thread

And to post again:

Kelford Cams Applications

There you'll find all cam grinds made by Kelford for VE,GTiR,DE/DET.

My crankcase ventilation thread is probably moving to the How To section some time too.

Are trying to keep all information in one centralized location. Not scattered over sub forums.



Once you feel like it's "complete" we can move it here. Until then it's a work in progress .

I still have no updates regarding the specs of the 184-C/D cam grind.

oooo, I need to check that one out, I could use a good venting



That's the way to go. I hate it when everything is in a subforum. Better to have turbo, n2o, maintenance, ect, as sections in the tech info library. Is "my" sr20de headcode list moved? I'll have to check on it.

What lift are all these cams being measured at? I see total max lift but not where they are measuring duration. If it is not all the same then they don't really mean anything. If they are then great info Manufacturers tend to inflate their numbers this way sometimes/

Good question. Most of the time, the specs that I've seen are measured at .040", or .050" for US Spec.

For instance, the Kelfords are measured at .050" for advertised durations. The xxx indicates where max lift should be.

Maybe Matt will alter his post to indicate that the durations were measured at .xxx", in addition to the already posted information?

I'd assume all the OEM cam specs have duration measured at 1mm of lift (0.3937 inches) since that's the way the intelligent parts of the world operate.

X2. Well, most measure at .1mm and 1mm of lift, and advertise durations at those values.

EDIT: .3937 is obviously rounded to .40", which is JIC standard. SAE's standard is .50".