The 340 is the biggest POS V8 Chrysler ever made.

Back in the day, I saw 340`s w/ the same thing done to them as 350 chevys, cams-heads - valve size-auto. trans-race gears- slicks- the 340 would whip the 350`s *** , on the dragstrip! You build them exactly the same everything the 340 will win!
I know, apples and oranges, and I knew a guy with a built 283 in an El Camino that handed many *** whoopin's .