438/451 Lowdeck Dyno

451Cuda said

IMO the 451/eddy head combo would have improved with the 1 7/8 headers. Were any smaller primary headers tried?

Is the second dyno results it says 440 BBD, so a standard RB 440?

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1 7/8" Header on a 451 in my experience is always a few hp better than the Dyno 2 1/8" EGT Headers.


Yes,
the 2 nd Sheet is just a pretty run of the mill RB 440 Build, "Prepped' stock ly rods, Icon Pistons, Ported Stealths with the CompCams XE284 on 1.5 Rockers @ .510" lift.