Bighead440 said

That's the one! NOT XE274, it's mediocre if you want a fast acting lobe. As Wyrm will tell you, there is something to be gained from a .904 specific grind, as long as you're OK with potential wear/noise issues over a slower lobe. I personally like the XE/HL series, and have run them myself. Put the 258HL in my 440 and used a 275HL in a MoPar crate shortblock 360 (took the .508" Purple cam out) with OOTB Eddy RPM heads. Nice combo, with a LD340 intake and 3.23 gears/2500 stall in a '72 Duster.

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