03 Silverado Step Side Build "StepChild"
#191
I would probably set the meth a touch higher just to make sure it doesnt spray while the 2 step is cutting timing. Its a fair amount of liquid to spray into an engine that wont be firing. If it ramps in that fast make it turn on at 10 PSI or so. Once you launch it must jump from 8PSI to full boost pretty quick.
Does your spool feel slower? Could that be part of the slower time at half track? The launch itself usually doesn't have all that drastic of an effect on the MPH. Down 4 is kind of a lot. I would guess you could take a tad more timing than 13* at 15PSI. What size nozzle are you running? I have a 15GPH and I was able to run 16* safely with the blower making the same boost in a higher compression LQ9.
Does your spool feel slower? Could that be part of the slower time at half track? The launch itself usually doesn't have all that drastic of an effect on the MPH. Down 4 is kind of a lot. I would guess you could take a tad more timing than 13* at 15PSI. What size nozzle are you running? I have a 15GPH and I was able to run 16* safely with the blower making the same boost in a higher compression LQ9.
#192
Been awhile since I updated this. truck has been stuck in the 7.0s and 11.0s for awhile. Last couple outings , had some carnage. broke flexplate on a 11.0 at 121.8 pass, then 2 weeks later, broke the drive shaft on a 7.02 at 98.5 pass at 8th mile track. Had to get new trans case, built 4" aluminum shaft 1350 etc. Went with a adjustable Qa1 shocks all the way around, and managed to lighten it up by 150+ lbs. added a tubular trans mount and loop. a couple more little things and I will try for 10s again. last time out it was in the high 80s, high humidity, so I hope the cooler air will be good to me. I also traded in my tundra for a 15 crew cab z71, and loving it so far.
#193
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mrgrim
GMT 800 & Older GM General Discussion
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07-08-2015 08:12 AM