just out of curiousity. how large of a motor can a 6.0 be punched out safely? reason asking is i need to get new pistons for the 408 and was just curious to see if i had to clean up the walls at all how far can i go without buying a new crank and rods

i know slowz71 is up there in bore and has had troubles. just want ot hear ppls opinions

 

i think what happened to slow is he went to 4.1" stroke and had problems with that

 

I have heard .040" over, but less is better. What is the condition of your cylinders right now?

 

they look good from up top but i havent put it on a stand yet. once its tore down then ill knwo for sure

 

Im just curious, why does the 408 need new pistons already?

 

had an issue with valve float or spring bind not sure exactly.. but my #7 cylinder is wiped out. look in mulitmedia to see the pics

 

My block sonic tested just fine for a 4.04 bore. The 4.1" stroke is what caused alot of my problems with an improper piston design thanks to JE

 

is sleeving the bad cylinder an option for you?

 

It would be cheaper to get another 6.0 block and have it bored.

 

If that is the case, why dont you just get a new piston, block and have it machined. It would probably still be cheaper and i know you have to have some hookups.