mods

[SmitysGTP]

I have a 99 gtp the I plan on building from the block up starting with forged pistons. I already have 3.2 pulley, pacesetter headers, wbs stage 2 intercooler, colder thermo, colder plugs. I want to install a cam, ported heads, new rockers and springs, smaller pulley and more. What would be my best options?

[dbextreme]

Why do you want forged internals? Plans for hight boost turbo? Big shot of NOS?

I know the quote I got for building my bottom end was a joke...

[Slick2500]

Bottom end is not an issue with these engines. Someone told me that ZZPs record cars all had stock bottom ends.

[FoSHO99]

Quite a few have hit 600whp+ on stock bottom ends, most of the problems stem from bad tune/other issues.

[SmitysGTP]

Just know the stock pistons crack, I am running nos but not a huge shot

[gtpsgofast]

If your going to go big then get a built tranny. No need in having lots of hp when your tranny will fail. Also could do a T/C upgrade. After you get all the goodies don't forget a couple of important gauges. A aeroforce and a wideband 02. And last but not least a great tune.

[PurpleGuy]

People have done 200+ shots on stock bottom ends. As long as you have the correct flow mods for "X" pulley and your tuner knows what they're doing you'll be fine unless you're going for big big numbers

[SmitysGTP]

So forget the forged pistons, what would be the best rockers and springs for an xp cam with ported heads

[matt5112]

stock and 130's.

[camopaint0707]

Nitrous people. Stop quoting NOS from the fast and the furious.

[Matt Palm]

well its nitrous oxide system

[dbextreme]

HEY, I work for the Government, all we know is acronyms... LOL

[Slick2500]

NOS is a brand name kinda like Band-aid, Chap-stick, Kleenex, and Frisbee, yeah we could say adhesive bandage, Lip Balm, Facial Tissue, and flying disk.

[dbextreme]

Go Baby Go Juice?? :-/

[gtpsgofast]

Go Xpz and forget the rockers. 130lb springs will be ok for this cam. Don't get crazy and change shift points in your tune and you won't need any higher lb springs for the xpz.

[oldgtpowner01]

Worse thing is that the nos system is the most pain in the butt. Get a zex system and call it a day, much simpler