Quote:
Originally Posted by dci
I agree, cam lobes for this level of performance will need to be well thought out and require a stout valve train. Pushrod length will be a challenge for sure.
John what are your thoughts on lifter diameter and a taller lifter? Have you used or know of anyone using 2.0-1 rocker ratio's?
Don Johnston
DCI MOTORSPORTS INC.
330-850-5050 shop
330-628-3354 cell
Designer of the DCI Tiger Heads and the NEW DCI Ram Air 5 Heads !!!!!
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Yes , many at 2.0-1 , I am at 1.9. Rocker ratio is your friend and then it becomes your enemy. The valve acceleration is the thing you're after but that's the same thing that can send the system out of control. Spintron is the answer for the seriously trying.
I don't like a tall lifter, it puts more ang in the push rod. .937 key way is the only way to go IMO.