does anyone know if this will work? Will the piston fit on the LS rods as well? thanks

 

ttt

 

Rings will fit, however i highly recommend buying new rings. I would never re-use old rings. Pistons will fit on the rods. Just take it to a machine shop so the can shave down the rod for the piston to fit. It needs to be mounted and balanced anyways so might as well kill 2 birds with 1 stone.

Also depending on milage, you may need to do a slight hone on the walls to get a good cross hatch again on the walls. If you have high mileage i recommend boring .25 over and buying the factory .25 oversized CTR pistons along with rings to ensure a good seal.

 

just machine the inside of the pistons like 1mm on each side so the rod will fit, don't machine the rods cause LS rods are already very weak

 

I just bought PR3's too and I heard there is no modification needed to fit these on ls rods...

 

Correct me if I'm wrong but CTR pistons go by PCT, not PR3.

Install new rings. Not worth saving a few bucks on a critical internal part.