Aiight people, I need a little word of advice here. What advantage do I get if
I take out my GSR crankshaft with stock pistons and replace it with a ITR one
With CTR pistons factory bore? Is it worth replacing the GSR crankshaft for the ITR one with the
CTR pistons, or just replace the GSR pistons with the CTR pistons and use my GSR crankshaft?

 

i would put itr's in and leave the gsr crank (balance if you really want power). type r revs faster but makes less torque at lower rpm's. ctr's mean your gonna have to retard or compensate w/higher octane especially w/gsr heads small c.c.