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  1. J

    Question: triple turbo sizing

    That perfect than. Do you think it would couple at 1800-2000 rpm is a heavy truck? The worst part is our locker. When you pull out with a high stall on a turn, and the detroit locks and holds the truck back it just feels so akward thats the biggest reason I went to twins over my big single and...
  2. J

    Question: triple turbo sizing

    Tha'ts the first I saw this car. It looks great, and I think your setup might be exactly what the op is in need of. I have street driven a 7200 pound ccsb on a 3200 stall though and it is embarrassing, such a struggle everywhere you go. The car is lighter and its suppose to grunt so you can get...
  3. J

    Question: triple turbo sizing

    Ok they make a 1.10 ar housing for the 96 tw but even that housing is huge. No idea how you will fit 2 of them anywhere lol It is gonna spool awful in the valley. sell the 96 tw cartridge and turbine housing. sell the t4 housing off the other s475 buy another 75/83 cartridge and buy 2 tial v...
  4. J

    Question: triple turbo sizing

    He is running triple cp3 fuel pumps he said, he may want a little more air. Its a light car that is just a race track ride correct? What stall tc do you recommend, and what turbine size are you using( I am guessing the 87 tw as that comes with the race cover box stock as pictured)
  5. J

    5 speed drum in a 6 speed??

    There are trade secrets and builders that do very well. The problem is you can't really patent, much less enforce it. So any average builder that knows what he is looking at can buy a transmission from a builder that has breakthrough technology or something spectacular and take it apart and copy...
  6. J

    Question: triple turbo sizing

    If money is not going to be a problem I would not use the 83 or the 96 tw. They are 30 years old. I like the 87mm tw it is new technology and flows close to the 96mm tw. The 75 mm compressor wheel as the high pressure will be fine, or a 72mm. The exducers are both 100mm. I would look at a race...
  7. J

    LMM: Wisco Pistons

    I have to agree. The flame front slamming the piston and the resulting echo is probably the biggest factor that effects engine sound from the exhaust. The other being turbine wheel size and shape and exhaust system design. Now the actual shape of the engine and valve cover etc will effect...
  8. J

    LMM: Wisco Pistons

    I have tuned these pistons. I did not notice piston knock or any other noises. Weisco does not incorporate an offset piston pin for noise reduction. The factory pistons with 2 arrows do have about a .040" thrust offset. The lml engine had a piston tick and if you check with gm parts they do...
  9. J

    Anyone worked with Ford 6.4

    When I get a 6.4 in the shop its usually a 5 to 10k job. Cab has to come off for basically any major repairs. They do run good and get good fuel mileage. The 5r110 trans is a good unit as well imho.
  10. J

    Converter kicking out.

    Is the tcm still commanding tcc duty cycle when it happens? If so I would say you are loosing apply pressure to the clutch which would be odd, or the clutch is slipping. If the Tcm is releasing the tcc, than I would log all the speed sensors as well as tfpsw and range switch logic and report back.
  11. J

    Allison 6sp: One Unique Range Shift Inhibited Problem

    Alright found and solved the problem. Additional checks, check the vss, I unplugged the vss/oss and removed from tcase, then plugged it back in and let it hang, no change. live plot of all speed sensors, no issue. pid data showed the al5 would command gear 7 (reverse) or gear 1. It waited 3...
  12. J

    Allison 6sp: One Unique Range Shift Inhibited Problem

    Yes Sir I pulled the pan down and checked checked the entire valve body. As far as I can tell I do not see any problem. MAybe I can just ride shotgun with you at laplata! lol
  13. J

    Allison 6sp: One Unique Range Shift Inhibited Problem

    I have a few more updates to this thread. I have a tcm I use for pulling. It starts in 4th geard in d, 3rd gear in 3rd, 2nd in 2 and 1st. I tried it out in the truck and it did not help. So I started to think about hooking my schafer shifter up. I have never done this on an allison and actually...
  14. J

    Allison 6sp: One Unique Range Shift Inhibited Problem

    Bumping an old thread here. I am having the exact same issue. Range shift inhibit after about 3 seconds of shifting to drive or reverse. I have tried, nsbu, ignition switch, checked all powers and grounds, tried 4 different tcm's, checked the wiring from tcm through all solenoids, powers and...
  15. J

    Porting to reach high rpm breathing

    minus well keep going and find out where the jacket is all the way around. Since they are cast I am sure it is not consistent from one head to the next.. You were going for quite the opening there!!
  16. J

    LB7: 30% over injectors.

    Well it was a tough decision because you were staying stock on engine. Plus you fellas were busy with kenny's. We are bringing the white twinned dodge, so we will see you there bud. Glad to hear you got it done and I guarantee:thumb: you got a better nights sleep at 4 am than you woulda at 9pm...
  17. J

    LB7: 30% over injectors.

    Told ya man. Are you going to Antrim saturday to dyno the new setup?
  18. J

    Question: Holset HX60

    would a shorter pedastal and van tstat housing help?
  19. J

    Saturday Dyno........

    Very nice Work Chavis. I guess the 2000 mark on spray is right around the corner if you so choose! What rpm was peak power at?
  20. J

    Gt4294 which a/r????

    Ok well I think we are just going to hijack this thread until the op can tell us how this turbo toes!! Ok the gtx4508r ran like a scalded dog. It spooled up just like my s472/87 (both had the same size turbine and housing so why wouldn't they) In fact it may have even spooled better. And as...
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