WOT-Tech's new cams

[ericjon262]

the big advantage to roller cam bearing is durability, but how much more durable compared to coated... ?

[Z26-T]

So all this cam talk... What do we have to do to allow us to run SBC roller cam bearings? I'm reading mixed reviews on them being worth it... but if I wore out the cam bearings I have now then I'm not sure what's next.

I looked into using needle bearing cam bearings in my dragster and found that it wasn't worth it. You need to have the block machined to accept the new bearings and then install them. From most reviews I saw it was about a 6 hp gain and was only really useful for the oval track guys. I know that DDing will put the miles on it, but you don't keep the engine pegged at 5k+ for hours on end. With using the coated SBC bearings for our applications, I don't foresee any real wear issues. Especially since the 100k+ 3400s I've had apart just barely started showing copper with the stock narrow bearings.

[ericjon262]

It'll be rollers in my motor if the teflon bearing I will be running don't hold up.

[3400-95-Modified]

I am currently running the Clevite AL-3 Heavy Duty cam bearings for a 350.

SH1349S Material: AL-3

I didn't go with the B-1 material because Babbit is known to flake and crater when under excess stress and that's the symptoms I saw on the previous babbit bearings I was running, so rather than gamble with another set and have them do the same even though they are wider I just went with the heavy duty option.

[SappySE107]

Pushrod lengths for regrinds vs similar grinds we do now on cast cams is .040". This is why you can do a lot more with the cast cams we sell over a regrind on a cast or hollow cam. Comp gets the cams from the same source as melling and those places as far as i am aware.

Are you running the teflon coated wide cam bearings? I don't know about roller bearings but it has to be damn near the same process as a SBC.

[3400-95-Modified]

I was familiar with what the billet is, and how its really 100% custom cut, it was more of the question on what the term "blank cam" meant since Ben called another persons cam not a re-grind... I guess that term would only apply when you take a 100% stock run ready cam and send it somewhere to have the profile changed.

So all this cam talk... What do we have to do to allow us to run SBC roller cam bearings? I'm reading mixed reviews on them being worth it... but if I wore out the cam bearings I have now then I'm not sure what's next.

[ericjon262]

So a blank already has close to the factory lobe size on it, maybe a bit larger to allow for the finish grind to be done?

pretty much. billets are also forged and not cast, making them much stronger

[3400-95-Modified]

So a blank already has close to the factory lobe size on it, maybe a bit larger to allow for the finish grind to be done?

[ForcedFirebird]

The non-ground blank is cast close to the tolerances, then machined (rough lobes are already there). Billet is just that, it starts life as a piece of round stock completely machined on all surfaces - this is why the billet cam is only limited by the cam bearing size for install, and not not relying on how large the particular blank was rough cast.

[3400-95-Modified]

Pages 15-22 in the comp master lobe catalog are what we can use for the normal cams, including most of the Q series. No Marine. This is a game changer....if you want 600+ lift. MUHAHAHAHA. As for the billet cam, no limitations as long as the lobe is designed for the small block journal. Gen 3 oil pump drive is melonized and should be ok with the steel gear. Otherwise bronze gear is where its at.

Ok lets see if I understand this now...Current Comp grinds are reground stock cams with the lobes from pages 15-22? Or are the cams Comp starts with completely blank with no profile ground at all yet? OR is the billet cam the alternative that has no profile which allows anything to be ground as long as it fits in the journal?

I'm confused because you said Mars's cam was not a "regrind" and he sold that for rather cheap, yet the billet cam is close to $900

Also by this statement as well "Comp Cams uses a new cam blank to create a wide range of choices for your naturally aspirated engine."

Wondering what the difference is between a "blank" and the un-ground Billet cam that allows it to have more lobe choices.

[ericjon262]

I'm about tapped out right now, between the order I placed with you guys last month and the machine shop there's not much left!

[ForcedFirebird]

so, how long until we see dyno results?

As soon as you drop the coin on a billet cam :P

[ericjon262]

so, how long until we see dyno results?

[SappySE107]

Crower 76005. $50 on jegs so yeah...I got screwed last time.

[ericjon262]

ouch!