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Mike Graham · 03-11-2017, 04:57 PM

M has almost 20cc bigger head cc. some of that is recovered in the difference in piston dish. The carb will be the limiting factor. Not valve size. Plus it looks like M carries 10 more hp factor. 351w W all the way.

03-11-2017, 04:57 PM	#2
Mike Graham Member Join Date: Jul 2002 Posts: 410 Likes: 1 Liked 341 Times in 67 Posts	Re: 351w vs 351m M has almost 20cc bigger head cc. some of that is recovered in the difference in piston dish. The carb will be the limiting factor. Not valve size. Plus it looks like M carries 10 more hp factor. 351w W all the way.