I have a vortech s-trim supercharger with 6 lbs of boost. I am wondering how much nitrous I can run on a stock block. The only other thing that is done to the engine is 42 lb injectors, the rest is stock. Thanks in advance

 

im curious as too this myself

 

None, unless you want to join the rebuild club. Stock pistons will not like this combo. If you use race gas, you might get away with it for a while.

Rich

 

You can run it, but Rich is right and you'll be living on borrowed time. I ran a 75 shot on 6psi when I was running 12.70's to 12.80's on boost alone. It took me down to 11.30's on ET streets. That was with a 12 bolt and street twin though. 36lb SVO injectors, but i had it tuned on the conservitive side with about 28 to 29deg of timing. I'm at 5500ft, so I can get away with a little more timing, but you might not want to run that much. My a/f's were in the low 11 range also. I'll also add that I didn't run that way too much either. Only at the track and probably not more then 5 or 6 runs. She didn't blow, but a few months after that, my oil pump let go and did me in. 150hp shot, a few more pounds of boost and 33 more cubes later, i'm ready to revisit the track.

Ken R.

 

Start saving for a rebuild

 

Pulley down instead of spraying.