W2 408 Dyno results today !

rmchrgr said
That's the 4" stroke. My 416" pretty much tops out at 6,000 rpm. Prior to that I had a W2 3.31" stroke 340 that was shifted at 7,200.

I thought it might be due to the piston speed with a 4" arm but it dropped so fast . I figure it might taper off.