I'm looking at total shipping weight of the cranks. To get a newer 904 to fit a 273 crank you have to drill the pilot hole bigger. Also the cycles of a 273 crank is just in years at least 5 yrs. more. For stock eliminator racing less reciprocating weight means better et and mph. I'm trying to factor many variables. Thanks
hi, I weighed all my cranks, 273 & 340 both weigh 56 #, 340 cast weighs 52 #
cast are usually 4 # lighter. I weighed mine for my new srocker motor.
besides, the total piston /rod, ring combo has to meet a min. weight.