its a mild built 440, 9.4:1, MP 284/484 cam installed 4 degrees advanced, initial timing is 15, The water pump housing is the original one that came on this 1975 440 and i believe the pump is the a/c one, the water pump pulley is about 6 1/4 inches and the crank pulley is 7 1/2". seems like if i could get just a tad more air through the radiator it would work..