4 3/8 pistons

[newby puller]

Want to bore m block to 4 3/8 where can I get some pistons and how much do they run thanks
 

[440]

use chrysler 440 pistons, available everywhere and not expensive.
 

[newby puller]

Thanks do they fit stock rods on stock stroke
 

[High Octane]

no, youd need longer rods or add a stroker crank. "cut n paste" a set of M rods to the length you need n run it. or, spend 800 or more on custom set that uses stock rods. Talk to Ray at Extreme tractor parts. He will make you anything you need. Also, you need a super m thru 450 block to run over 4.25, but not over 4.38 bore in em. Ms r good to 4.25 bore. good luck.
 

[Josh Blackburn]

contact gary baker or murphys.