I just received my SRP 8.5:1 pistons for my LS and they are not marked for INTAKE or EXHAUST... they look quite symetrical. I dont know if these are supposed to be installed a certain way since there are no markings. Anyone have a clue since they didnt come with any directions on the direction of install?
NOTE: inside the piston it says SRP on one side and 20 on the other... (if that helps)

thanks

 

look at the valve reliefs on the piston dome. The larger diameter reliefs are for the intake side.

 

they are not marked for INTAKE or EXHAUST... they look quite symetrical

AKA... the reliefs look exactly the same on both sides