van383

iTrader: (1)

Just curious some thoughts on a 393cu 3.900 bore,4.100stroke,6.125rod stroker with ported dart 62cc 225cc 205 1.60 valves, 11.1 comp, comp 238 240 .605 .609 cam, victor intake with 1000cfm tb. Im running 19-21 degree of timing on pump gas, thru pg and 9in ford around 400rwhp. I have not dynoed car just using weight and et mph figures. Now when it comes to running nitrous it really wakes up picking up over 12mph over n/a mph on a 150 shot, at a conservative 10.3-10.5 a/f. same timing on pump gas as n/a. This was first ls1 build and really expected better n/a numbers than what it does, but on spray im happy with the results so not sure if i should complain. Any thoughts on why this may be that may help me in maybe looking to change some parts on it this winter, thanks

5_02ls1

iTrader: (20)

why such low timing n/a???

van383

iTrader: (1)

seem to get spark knock anything more. still running sensors and at track does not seem to make a differance when i add any,which i thought the same thing as well it should like more but i am on pg with 11.1? also this is thru factory single 3in slp ex with added muffler in rear no cats, im changing soon!

mondols1

iTrader: (2)

based on the build infi i would have expected more hp n/a than what your getting. maybe someone can chime in re your a/f ratio / tune?

regency

iTrader: (15)

too much fuel and not enough timing

edit: ohh and i bet you could run a little smaller fuel jet on the nitrous and pickup more power since your already running pretty rich