vortec 5.7 nitrous timming

[6789olds]

how much timming are u guys running with your nitrous ? and with how big of shot ? i am running 25*and 125 hp at the flywheel .

[96ImpSS]

With my little 50 shot, I just leave it at the 28 degrees total (87 octane tune) that I normally run, but I put 93 octane in it when I spray it.
If you're running only 91 octane, I think I'd back the timing off to 23 degrees with the 125 shot. If you run cool (don't let it heat soak between runs), you may be ok with 25 degrees. E fans are really nice for cooling the radiator between runs and giving the heads a nice dose of cool coolant when you start up.

[6789olds]

thanks for the info . i just put in a 145 amp alt hopeing to do those e fans for sure . i have a 160 stat and it stays 166 and 170 with the ac on . i also am running BR6EF plugs at .32 are u running a 50 shot at the wheels or flywheel ?

[96ImpSS]

thanks for the info . i just put in a 145 amp alt hopeing to do those e fans for sure . i have a 160 stat and it stays 166 and 170 with the ac on . i also am running BR6EF plugs at .32 are u running a 50 shot at the wheels or flywheel ?
I'm running a NX "35" jet. It's called a 50 hp jet on their charts. I'm not positive it's rwhp, but from the delta mph I get from NA to spray on a 4900 lb vehicle, I'd say it is.