I've seen A LOT of posts about making HP with a 318-So why is it so ???

ir3333 said
cams...most would scoff at comps xe 256 and the Darling has always been the xe 268 ever since Dilchich built the 340.Lets compare the two...this is comps own Dyno using a 9:1 350 with Dart heads
That 256 is a much better street cam

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My guess would be the heads are a limiting factor there.

xe256 is more aggressive cam than stock 340, xe250 is about the same as a 340 cam with tighter lobe separation.