whitestang97

Well i just rebuilt my 97 4.6....put new rings rod bearings head gaskets and all that good stuff in it....know my question is how do you think the fresh motor would hold up to a 125 shot???

Trmachuno

I'd say don't spray till the motor is fully broken in (people say 4k-6k miles), just to be safe. After that I would get a tune for a 125 shot, I've heard lots of people running 100shots on a stock tune with no problems, but it really isn't verysafe to do. A tune will retard the timing some to make the a/f ratioperfect for nitrous.

whitestang97

yea i planned on breaking the motor in...i wasn't just gonna spray it right off the bat...

josh.davis

Just take a few degrees out of timing.You will be fine; Just make sure you run a window switch.

35thAnni99GT

^^ these guys got it covered, but expect some fun times. You'll suprise alot of people. Go take some money races now. [8D]

Quick Shot xMLx

You should get a PI swap

But yea the motor should hold up fine. I was spraying a 100 shot for a while and upped it to a 125. -3 degrees of timing and no signs of trouble.