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Thread: launch RPM'S

  1. #1
    Join Date
    Jun 2007
    Location
    oxford me
    Posts
    162

    Thumbs up launch RPM'S

    can anyone with some track experience tell me what rpms i should hold the truck at? IT IS A 01 XTEND CAB lb7 all stock.Ill be taking off in 4wd. to get traction,and it is a 660' strip.any help is appreciated
    #1 01 dmax xcab 251000 miles and climbing
    #2 06 dmax crew cab 66000 miles 2009 polaris dragon 800sp 89 suzuki 500 quadracer

  2. #2
    Join Date
    Sep 2001
    Location
    Lubbock TX, USA
    Posts
    4,194

    Default

    Technically, you just stall it up as much as your traction will allow before breaking loose when staged up.

    The best case is when you have GREAT traction and can floor it as soon as your opponent finishes lighting up his second staging light (after you've done yours).

    A boost gauge is also helpfull during this, because to get things consistent you'll want so much boost at a launch.

    No clue on a Duramax how much you'll need for a good run tho.

    J
    1982 C10 SCSWB 6.5TD, mods too extensive to list. (13.69 1/4 mile @94.6 MPH) RACE TRUCK
    1982 C10 SCSWB 6.2NA, 2.73 700
    1986 C10 SCLWB 6.2TD 3.73 700
    1989 V20 SUB 6.2NA, 3.73 400
    1994 G20 VAN 6.5NA, 3.42 60E
    1994 K20LD ECSWB 6.5TD, 3.42 80E
    1995 K20 SUB 6.5TD, Wrecked, ran into by stupid teen.
    1995 C3500HD DRW 6.5TD, 12' Flatbed 5.13 80E
    1995 C3500HD DRW 6.5TD, 18' Rollback Wrecker 4.63 80E
    1994 C20HD ECLWB 6.5TD 3.73 80E Wifes Truck.
    1995 C20LD ECSWB 6.5TD 3.73 80E
    1995 K20LD SCLWB 6.5TD 3.73 80E
    1996 K30 DRW 6.5TD 4.10 80E
    1997 C10 Tahoe 2Door 2WD 5.7L to 6.5 Conversion Underway

  3. #3
    Join Date
    Mar 2000
    Location
    Loyal WI US
    Posts
    10,792

    Default

    Lower the Tbars down all the way in front.

    As for RPM, it's generally boost that we watch and as mentioned above, give it about all it will hold back.
    Kennedy Diesel-owner
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