Originally Posted by viperblue72
Originally Posted by Torquemonster440

I think he could have made a better choice than that Thumper cam. Those always seem like a gimmick first
and performance second. A cam targeted towards maximizing that combo would have performed better than a cam
targeted at making a lumpy idle.


I had Oregon cam grinders spec a hyd. Roller for a motorhome 440 with 440 source heads. It was a low buck deal.
Their recommendation was a 230/239@050 .525/.540 on 112lsa install at 108.
I used this cam later in a 9.5 to 1 motor with sidewinder heads. It made 490hp/554tq.
I feel a tighter cam would work better in the current combo. Not sure what it would of done in the low comp 440.


Those specs look to be more in the neighborhood of what that engine might need. Although the heads were terrible too.I'm sure Dulcich and Freiburger would have hit their 400 hp goal with a cam close to that range.

Last edited by Torquemonster440; 01/07/20 08:34 PM.
1966 Satellie.. 12.55 @107.75. 906 heads. 3780 lbs.