Quote: what are cam specs on the drag pack motors? do they have to stay "in spec" or can they slam anything they want in the engine?
where do these heads stall at?
is everyone running a behive spring? or doing something fancy with valves/springs and retainers?
The DP 5.7/6.1 motors came with MP 392 camshaft. 229/235 @ .050" 584"/552" can't remember the lsa. Sorry.... That camshaft quit making power at 7000 rpm and nosed over badly at 7300. Most owners opt'd to increase their cams duration by atleast 20*'s or more however you must stay within cam lift spec's according to NHRA.
Majority of DP engine builders use either PAC or Manley Beehives. Manley springs are in our's.
These heads are terific. Espeically when you can modify them which you can't do in Stock Eliminator. Here's a peak at the first set of closed chambered 5.7 heads back in 05.
