Piston Quesion

[TurboJames]

hi guys i need some help from the pros on this subject

i have a 4.1 251CI
it has Speed pro hyper pistons in it.. i seen a deal on here for the JE 4.005 pistons... i plan on running into 10s at least... what would be the best, safest most reliable option? don't want any high repair bills..

 

[turbofabricator]

JE all the way. Unless they are 12.5:1 NA pistons
Need more info on specs to help you out.

 

[ek02]

Those pistons for sale are for a 4" bore. It's the rings that are 4.005. They are file fit rings for a 4" bore. That's how JE marks their file fit rings.

 

[shmed]

i think what he's asking is his motor right now has a hyper type piston in it should he upgrade to the forged jes that are for sale?

hes runiing alky an 25+ psi at the track