[goatman65]

Dave mentioned that Marcel has a 271/278 @ .050 cam in his street 468, Now that sounds like my kinda street cam.

[grandville455]

Originally Posted by goatman65

Dave mentioned that Marcel has a 271/278 @ .050 cam in his street 468, Now that sounds like my kinda street cam.

My cam is 265/270 @050 , on a 110 LSA its really not that aggressive sounding to me, depends how the tune is on the idle sound. Imo

[adamo]

So with a 1.65 rocker I should have .0099 hot lash

[grandville455]

Originally Posted by adamo

So with a 1.65 rocker I should have .0099 hot lash

Correct, you dont want to go over that, or your off the end of the ramp and not doing your valve train any good according to mike jones of jones racing cams, So set it cold get it good and warm drive around etc and see how much it opens up hot , then adjust accordingly to stay in that window or just below ,he's the one that designed my cam.

[Steve C.]

Response from Mike Jones / cam designer that Darby mentions here....

A few years ago I e-mailed him and asked if 150 lbs seat pressure might be ok with using solid roller lifters with the Comp Magnum High Lift hydraulic roller lobes number 3122 & 3120 used for the Old Faithful cam. His response:

"I don't know enough about the ramps used on those Comp lobes to be able to tell you what seat pressure you need. If they're gentle, 150# might be fine, if they're aggressive, it could take 180# on the seat. Some hydraulic roller cams have an opening ramp that's too aggressive to run with a solid roller lifter. You'll need to check with Comp, so you don't run into any issues."

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