1st 340 build

The only difference in cost between a 340 /360 is piston price.
When comparing KB hypers 'for instance' there is a $40'ish dollar diff, woopity doo...

what costs even more then a 340/360 in the performance piston depot is a 318.

all parts cost the same after pistons, so you'd be no further ahead or less spent if you had a 360 block instead.

build the 340, just grab a 318 cast crank/rods and buy some KB243 pistons, balnace it all, and put it together.
truck 318's in the '70s had shot peened/blasted cranks, '387' was the number, look for one of those, they are actually quite common...I have a couple std