200 Shot recipe
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From: Montgomery, AL.
200 Shot recipe Due to the recent inquiries into what it takes to run a 200-shot I am posting the following results. Here is what I have found that works for my LS1 -
200 Shot N2O
Started with 20* of timing easing it up to 22* with 0-KR. The timing was pulled from 25* to 20* from 3200-RPM up.-(and 60% on the injectors.) After monitoring the KR I replaced the 20* cells with 21* and then 22*. This was done with 3 gallons of 93 octane and 3 gallons of Sunoco 110 octane for a total 101.5 octane. I shift at roughly 55-5700 RPM depending on weather and track conditions. I hope this helps and please feel free to ask for anything that I didn't include. Also keep in mind that those with larger (Bigger than 221@.050) camshafts may be able to get away with either less octane or more timing depending on tuning abilities, weather, elevation; etc. (I am only 250-ft. ASL.)
Jim C.
200 Shot N2O
Started with 20* of timing easing it up to 22* with 0-KR. The timing was pulled from 25* to 20* from 3200-RPM up.-(and 60% on the injectors.) After monitoring the KR I replaced the 20* cells with 21* and then 22*. This was done with 3 gallons of 93 octane and 3 gallons of Sunoco 110 octane for a total 101.5 octane. I shift at roughly 55-5700 RPM depending on weather and track conditions. I hope this helps and please feel free to ask for anything that I didn't include. Also keep in mind that those with larger (Bigger than 221@.050) camshafts may be able to get away with either less octane or more timing depending on tuning abilities, weather, elevation; etc. (I am only 250-ft. ASL.)
Jim C.
Originally Posted by rosm187
why shift so soon?
It's a "torque thing" when it comes to giggle juice ... you wanna stay in that torque band.... I short shift when im on the jug all the time... im sure he shifts higher when he's running n/a (atleast I do)
But I guess I could be wrong
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Originally Posted by Somebody09
So why didn't you just spray a 25 shot and tune it for that, then move to a 50 shot and tune it, 75 & tune, 100 & tune, all the way up to 200? Then you wouldn't really have to guess at your timing.
Jim C.
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Originally Posted by dame
It's a "torque thing" when it comes to giggle juice ... you wanna stay in that torque band.... I short shift when im on the jug all the time... im sure he shifts higher when he's running n/a (atleast I do)
But I guess I could be wrong
But I guess I could be wrong
Jim C.
Jim, sounds like a safe way to get there. I havent tried shifting that early yet, I do have a larger cam, but tried the 6200, like it, went 6000 even better... Once I can get back on a track I will keep playing with the shift rpm.
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From: Montgomery, AL.
Originally Posted by CAT3
Jim, sounds like a safe way to get there. I havent tried shifting that early yet, I do have a larger cam, but tried the 6200, like it, went 6000 even better... Once I can get back on a track I will keep playing with the shift rpm.
Originally Posted by Z284U2TRY
This may sounds funny but is your cam set at 0 mechanical timing? Would say 4 degree advance ground or set into your cam effect anything?
Jim C.
On short shifting, for me it slows the et down. But, then again I have a broad flat torque curve and a LS6. This year I will be doing a 3 stage for a very linear torque curve, at 3000rpm, 4100rpm and 5100rpm, and a 200shot. I will spray to 6600rpm and shift at 6700rpm. I have run my 200 on 24* timing so far, but not a 1/4 hard pull. I think 24* will be fine because I am adding the n2o in stages and in the higher rpms. Great info though, and very helpful, confirms what I plan on doing.
Robert
Robert
Could've been like me...hit the dyno and find out the cable wont talk to the PCM for reading/writing only scanning worked... 16* 9.0:1 AFR on a wimpy lil 210 Dry 
Dats okay, once the TC is replaced will dial it all back in.
Dats okay, once the TC is replaced will dial it all back in.