Speaking of W2's I have linked the 416 I built with W2's and Victor 34o W2 intake manifold. @ 4000 rpm I observed 520+ ft/lbs which is almost 100 ft/lbs more than the OP's engine. I have a few ideas on why this engine is lacking and how I'd correct it.
416 W2 on the dyno w/cam swap
Maybe our resident grapher STIXX could graph both of these out and display that here? Paging STIXX. J.Rob
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