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Went to the track yesterday after some new upgrades. The car didn't 60ft well and the DA was terrible. After talking to my tuner and watching the videos, I believe I might me blowing through the converter. What do yall think?
Th400, custom FTI that was speced for a .62 jet. They said it should be ok on the .88 jet that is in it now but I dont think it is. I need to get to a better prepped track as well.
Th400, custom FTI that was speced for a .62 jet. They said it should be ok on the .88 jet that is in it now but I dont think it is. I need to get to a better prepped track as well.
Sounds like a restall is in order. That's a solid run with that 60'. Goodluck man.
Thanks man. Yea my shift light was being temperamental lol. I thought it would have gone 114 or so to be honest. The best it did with the .62 jet was 109, normally 107-108. That was in better air though too. The DA was 3200 last night
Car looks good and the converter does not seem too loose from listening to your shifts. Do you datalog? If so, what are your rpm drops on your 1-2 and 2-3? What is the car stalling to off the launch (actual rpm)? What is your driveshaft speed vs rpm for converter slip? (You can also use mph and actual rpm but it is not always accurate) Lastly, is this strictly and 1/8 mile car or a 1/4 mile car?
I thought it sounded a little loose, but I hope your right lol. I am trying to get my tuner to the track when it cools off some since I dont have hp tuners. Right now I'm just doing 1/8 mile stuff since I have 4.11's in the rear.
BTW, what size converter are you running? 8"? I also have an FTI and it seemed loose on the street but super tight on the track N/A. I am running 3.70's and a 28" tall tire at 3600lb race weight. I have yet to spray my combo but the converter was setup for a 200-250 shot. My rpm shift drops N/A are 1700 rpms and it only stalls to 4500 on the t-brake. Once I spray it should drop to 800-900 rpms on the shifts and stall to ~5600-5700 rpms with a 7300-7400 shift point. BTW, the convert slip in the 1/8 will be huge as you are not going fast enough to couple the converter. FWIW, I am going through the traps at 125.4mph @6300 rpms and the driveshaft is 5600 rpms of 11% slip (this number is inflated due to the low trap rpm due to nitrous gearing). When I look at the efficiency at 7200 rpms on the 1-2 and 2-3 shift points N/A vs driveshaft speed the efficiency is 6%. FTI, will want datalogs of your runs to optimize any changes with the converter.
08-27-2018, 08:26 AM
6.34 at 112.5 
