i just bought a trans am, its got 220k miles. i wanna spary a 75 shot on it. does miles matter when it comes to nitrous ????

 

Miles have very little to do with it on an LS. I had 230,000 on my 6.0 when I sprayed it. Plenty of others have spray 200,000+ engines. Obviously the risk only gets higher of something coming apart but it is still very low on a high millage engine.

Make sure you do everything correctly and you should have zero issues!

 

I sprayed 150 wet shot on my 93 LT1 Camaro from 166-229k miles. Not one issue, just depends how the motor is kept and proper tune.

 

just mak sure it doesnt run lean and proper timing

 

75 is pretty mild, you shouldn't have any problems.