 timing on carb'd ls376/515
hey guys i bought a ls376/515 crate motor . i am running the msd 6ls2 box and on motor i been using the curve 4 timing pill... i have a track rental coming up and have installed a nx plate system with the iceman nitrous and fuel sol. and the -6 nylon line. i am planning on hitting it with a 150 shot. ive tried to look on here and couldnt really find anyone with my setup.
on the "curve 4" pill it states the timing is
1000rpm-4 degrees
2000rpm-20 degrees
3500rpm-21 degrees
5000rpm-16 degrees
6000rpm-19 degrees
for anyone that is familiar with carb'd ls3 does this timing seem low. should i still pull out 5 or 6 degrees of timing when using the nitrous.. any help would be apprieciated | 
