Im running a wet 75 nx kit on my 94 z28. i just wondering how peoples stock pistons are holding up. thanks for the help guys. ps. just spraying at track.

 

Numerous people are running 150 shots on the stock pistons, etc. Some even more. I've been running a 175 on the stock shortblock for well over a year now with no issues yet. So a 75 shot should be cake.

 

your running a 175 shot on a stock short block . how in the world is that thing handling it. Im worried for my motors life. well actually Im not, some guy told me that running a 75 shot on my car would result in me putting in a new motor or forged pistons in six months. I guess i just wanted to be reassured. Are you pulling any timing? I really dont want to for a 75 shot. I done a lot of reading a most people say to pull 2 degrees for every 50, and then again people say with a stock tune and a wet kit no timing needs to be pulled until you hit a hundred shot or more. What do you recommend. Thanks for you input.

 

I too run 175 on stock shortblock...I pull 4 degress with MSD retard module..no issues well...You run out of nitrous ALOT sooner

 

That always seems to be the problem doesn't it.

 

What kit for the 175 as heard some kits are rwhp and some are engine hp.
I think Nx is rwhp?

 

NX is fwhp...but think about it, for somebody to sell you a 150 rwhp kit, that would mean that system is jetted +15-20% to overcome applicable drivetrain losses..I dont really bite on the rwhp kits that much..cause your 150 shot is prolly a 180 shot or something..175 shot 200+ shot on so on and so on..but you still see at least 120 or so at the wheels on NX's 150 shot..can play with jets a LITTLE to get a lil more depending wide band 02 data

HTH

Peace

 

over the past 2 years, ive realized just how durable an LT1 is when it is tuned and everything is done right.

5k miles of being sprayed on a 100 shot
5k miles of being sprayed a dual stage 75/100
5k miles of S-trim on 5psi
5k miles of S-trim on 10psi and methanol

and the only reason the engine is out of the car right now, is i am actually "building" the bottom end, but have opted to even keep the stock crank and use forged rods/pistons for an agressive h/c combo with a dual stage 200 shot.