273 commano on the dyno wooooow

273's don't rev to the moon because of their short stroke. They have fairly light pistons because of the bore size, the lighter weight rods the same as the 318 has but they have/had a solid lifter cam, a dual point distributor, a open plenum intake, and a 4 barrel that all could go to 6000 r's without much of an issue. and another interesting note: the 235/273 has the highest hp/cu.in. ratios of all Mopar small blocks. Now, that is using rated horsepower numbers of course.