if you are trying to build a na gsr like i am wanting to in the future.. why would you not want to go with the ctr pistons if they have a higher compression? than the pr3 pistons? dont you want to gain the highest compression possible?



Quote Originally Posted by Mr. KiDD
PR3 pistons if you are staying all motor.

PR3 Pistons will yield around 11.6:1 in a GSR motor
ITR pistons will yield around 11.0:1 in a GSR motor
CTR pistons will yield around 12.9:1 in a GSR motor