[Streetwize]

Brian

Point taken on the 460, I could have sworn it was an FE. Thanks.


Yes the fast pull away from TDC is less detonation prone but as a result it also draws a little harder on "too big ports and cams", allowing him to make the big power up high and still have decent torque down low in the 2500-4000 range. In other words the pumping eficiency given up by the shorter stroke at higher piston speeds is offset by the surplus of valve timing and headflow.

I'm primarily a mopar guy but I've built strokers of all makes, I'm building a 517" version of my buddy Steve Dulcich's third place 470 from the '03 contest, using a 4.30 stroke and 6.535 rods with the same Chapman 380 cfm heads that Steve ran. The only other difference is, I'm running a roller (268/274 @.050, ~700./680 lift). I'm going for the same 2500-6500 EM style powerband.