340 vs 360

a 340 with 3.31 crank and 6.123 rod with 1.84 ch piston has a total length of 9.618....with the LA engine deck height being around 9.60...piston has an postive deck height of .018...which is good..

360 with 340 piston of 1.84 plus 6.123 and 3.58 stroke has a total length of 9.753...and with the LA engine deck height of 9.60...pistons has a postive deck height of .153.......you will need some pretty thick head gaskets to get that to work.....

usually need to use the low compression 72-73 pistons...with 1.75 ch....and that still puts the piston out about .060...which is close to do able...

but why?....340 pistons weight alot...360 pistons lighter and cheaper....