First off excuse my writing doing this on a cheap phone......Let me start by letting yall know what I have...02 ss th350, ms3 cam, ls6 heads unported, tci 3500 to 3800 stall, 373 gears, fast 92/92, 36lb injector, fuel pump, and 150 shot tnt....
1. is gaining 10mph on a 150 normal in a 1/8 mile? ( seen ppl post saying they gain 12mph in a 1/4)
2. I'm using ngk tr6s should I be using tr7s?
3. I'm thinking of getting a nano kit ...would I have to pill down to a 100 shot? would a 150 with nano be too much ( stock motor )? would I have to retune it?

 

You need to go to a br7 or br8. You only need to go Down one nitrous jetting(125) or up to a (175)fuel.

 

As SuperSlow said you would need to add 20-25% to the orfice area on your fuel side or back the nitrous jet off 20-25% of the orfice area. Your dealer or we at NANO can assist you with this. Most of the time you would install your 175 fuel or your 125 nitrous jet to accomadate.

 

Thanks guys for the info...but how do I pill down to a 125n or 175f if tnt rates thier shots by 50,100,150,200 and so on

 

Let me know what jets you have in there and i can tell you what you need.

 

Fuel: 25 Nitrous: 42 f2 kit

 

You would change your .025f to .027.

 

Thank you for the help....would .028 work?

 

A .028 is going to put you on the rich side.