1973 340 detuned?

smaller intake valve...2.02 down to 1.88

compression ratio....from an advertised 10.5 to 1 to an 8.5 to 1 ...done by dropping the piston down about .100 of an inch from the high compression engine..changed the compression height on piston from 1.84 to 1.74....and they added a cast crank which has no effect on the performance....

the 73 A bodies were heavier too....new heavier bumpers and door beams...