Thread: Nitrous Guys Step In!!

Originally Posted by BADAZGTP

but said it was because GM shaved the tops of the GT pistons to lower compression for the GTP. .

Thats the problem...the stock gt pistons are hypertunic (sp?) the gtp's are already forged....running any kind of power adder on non-forged pistons can couse this...especially nos

Originally Posted by TDCRacing

Thats the problem...the stock gt pistons are hypertunic (sp?) the gtp's are already forged....running any kind of power adder on non-forged pistons can couse this...especially nos

So let me see if i got this right. Our GTP's already come with forged pistons? So is it a waste of money to buy aftermarket forged pistons? Or is there a difference? I haven't gotten into doing any piston research yet, so I don't know anything of the factory or aftermarket pistons.

Correct. The GTP's already have forged pistons because they come from the factory with a supercharger. im sure the aftermarket ones may be a little bit stronger but the main reason some one would get aftermarket pistons would be to change the compresion ratio.

Would stock timing tables be all i could use with nitrous? and then if the shot was big enough i would have to retard the stock timing to lower than stock?

Originally Posted by TDCRacing

Correct. The GTP's already have forged pistons because they come from the factory with a supercharger. im sure the aftermarket ones may be a little bit stronger but the main reason some one would get aftermarket pistons would be to change the compresion ratio.

Thanks for the info. Ilearned something new today. I was always told that the GTP had the same piston as the GT, just shaved down. Glad I know what is accually going on inside my motor. Thanks again.