Okay here's the skinny, I need some advice. How hard is N20 on a motor if used somewhat conservatively and properly? I have an 86 305 TPI. It has 80k on the motor which about 90% of is highway miles. I have only put about 5k at the most on the car myself. My dad bought the car in 86 brand new. I figure 75-100 hp shot. From what I've read as long as I follow the manufacturer's recommendations (NOS) and use it wisely it shouldn't have too much of an adverse effect. My dad babied the hell out of the car. I guess I do too for the most part. Please help me with advice. I'm sure this general question has been asked a thousand times. But I would appreciate the help.
Thanks,
Jason

I'll borrow a quote from a fellow IROC owner,
"Rice and pony the beefy thridgen treat."

 

You would be fine with a 100 but no more if you plan on keeping it, I did 150 on mine just because I had another engine. Make sure you change your plugs to colder ones and bump your timing!! Oh ya I would only do a Wet kit.

 

LOL, that's awesome.