273 commano on the dyno wooooow

pishta said

The heads dictate the HP, the displacement dictates where that power comes in. 360 will produce 450 HP at alot lower RPM than a 273. same in a slant, same head over 3 sizes, more or less where the power was RPM wise was up to the displacement.

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Problem with the 273 is that it has a long stroke and small bore which hurts cylinder head flow and you can’t run a 2.02 intake without notching the bore in the block. Even then the bore is so close to the valve that it hurts flow by a lot. An all out motor with really high compression and huge camshaft will have trouble making 450 even if your able to rev it to 8k.