A few years ago we did a dyno manifold test on my W2 head 363 motor it had a gasket matched Strip Dominator we swapped on an out of the box Victor W2 and it was a 13 H.P. increase, my heads weren`t heavily ported. I still have the 363 ( 360 magnum short block W2 heads) it is being redone for lower compression ( 11.5 to 1 to 9 1/2 to 1 ) for pump gas. When I was building my current 408 ( R3 block ) I purchased a pair of W2 heads for the build but sold them to get engine builder recommended 360-1s , the 408 makes good H.P. and T.Q. for low compression more than I expected but I wish I would have kept the those W2s though. The pair of W2's I do have came off a complete 12 1/2 to 1 340 I bought over twenty years ago for $2400 a steal by todays standards ! My 363 actually made 22 more h.p. with less cam and compression then the 12 1/2 to 1 340 : 10.40s vs 10.80s in my 3150 lb. Dart. My current 408 has ran 10.69 a best but is ran on a throttle stop to run 11.50s for Sportsman Eliminator and 11.50 Index racing.
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