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Thread: Gear Question

  1. #11
    Join Date
    Mar 2007
    Location
    Pittsburg, TX
    Posts
    210
    Quote Originally Posted by RedHeartbeat View Post
    Not shifting is a tune issue.
    Couldn't agree more!! Nothing Dr. Allen cant fix.

    Keep the 4.10's!!!!!!!!!

    My Ride: 2006 Chevy Vortec Max, LQ9, 4X4, no cats, 50 Series Flowmaster in factory pipe, 20"s, C.A.I., Custom tune by Dustin at TRT Performance

  2. #12
    Join Date
    Jan 2006
    Posts
    2,590
    I think you don't have enough resistance for the turbo to spool up with 4.10 gears. The shifting is a tune issue. The gears may hurt your times, b/c your truck is so light. I could be wrong, but most turbo trucks like a little smaller gear to give the turbo a little resistance. With 31 inch slicks, a 3.73 is as low as I would go with a turbo, now n/a trucks with a 31 inch tire, I would go with a 4.56.
    I could be wrong, but that is my two cents.

    I'll try and make it to the track Friday to watch you run, since Allen will have the truck torn down.

    Jamest
    12 Sec. Club! SOLD
    La Viuda negra/ a.k.a. Black Betty

    LQ4 6.0L, WCCH HEADS, LEVEL 5 FLT 4L80E TRANS. WITH TRANS BREAK, YANK 3200 STALL, TRICK TURBO, TURBONETICS T-76 TURBO, CUSTOM INTERCOOLED, 68lb INJECTORS, CUSTOM S/D TUNE FROM NELSON PERFORMANCE, COMP CAM 212/214 .557/.559 116+2, SNOW METH. KIT, . ALL INSTALLED AND DYNOED AT NELSON PERFORMANCE: 5**?HP @ 5073rpms and 5**TQ @ 4389rpms AT THE WHEELS WITH 10 PSI OF BOOST. ALL 3/4 TON TRUCK 5435LBS, NOTHING TAKEN OFF, STREET TIRES, AND USUALLY 2 BABY SEATS. WANNA RIDE?
    SOLD***

  3. #13
    Join Date
    Feb 2005
    Posts
    462
    Thats what I think James, everyone at ls1tech says the same.

    LS1TECH - Turbo boost and low gearing question
    2001 GMC Silverado



    Stock Bottom End LQ9, MS3, Stock 317's, Victor Jr, Aron's Elbow, 90mm TB, 1 7/8 TSP headers, FLT 4L80-E, Rossler Trans-Brake, 3600 PI TQ, 4.10's, 31" tire. Nitrous Dave System with Zex plate. On 150 shot 10.53 @ 128MPH 1.51 60'

    Old Setup = Trick Turbo Kit Tuned/Installed By Nelson Performance 10.78 @ 127.08 1.62 60'

  4. #14
    Join Date
    Mar 2003
    Location
    San Marcos Texas
    Posts
    4,393
    Quote Originally Posted by Jamest View Post
    I think you don't have enough resistance for the turbo to spool up with 4.10 gears. The shifting is a tune issue. The gears may hurt your times, b/c your truck is so light. I could be wrong, but most turbo trucks like a little smaller gear to give the turbo a little resistance. With 31 inch slicks, a 3.73 is as low as I would go with a turbo, now n/a trucks with a 31 inch tire, I would go with a 4.56.
    I could be wrong, but that is my two cents.

    I'll try and make it to the track Friday to watch you run, since Allen will have the truck torn down.

    Jamest
    same here!
    2006 Superior Blue Trailblazer SS AWD, Stock as a rock

    Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).

    Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning

  5. #15
    Join Date
    Feb 2005
    Posts
    462
    I just order the 3:42's for the truck, hopefully I'll get them in before friday, payed 2nd day air
    2001 GMC Silverado



    Stock Bottom End LQ9, MS3, Stock 317's, Victor Jr, Aron's Elbow, 90mm TB, 1 7/8 TSP headers, FLT 4L80-E, Rossler Trans-Brake, 3600 PI TQ, 4.10's, 31" tire. Nitrous Dave System with Zex plate. On 150 shot 10.53 @ 128MPH 1.51 60'

    Old Setup = Trick Turbo Kit Tuned/Installed By Nelson Performance 10.78 @ 127.08 1.62 60'

  6. #16
    Join Date
    Mar 2003
    Location
    San Marcos Texas
    Posts
    4,393
    He had 3.42's before. He has a 14 bolt now.
    2006 Superior Blue Trailblazer SS AWD, Stock as a rock

    Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).

    Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning

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