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Thread: do i have 3.73's or 4.10's

  1. #1
    Join Date
    May 2008
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    THE C.S.R.A
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    do i have 3.73's or 4.10's

    I got the truck it has a 4l80, 265/75/16 tires and at 60 mph it is about 1600 rpms. I think its 3.73's but just wondering
    04 Pontiac GTO
    06 Pontiac GTO
    03 GMC Sierra 2500
    and a bunch of other vehicles

  2. #2
    Join Date
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    Quote Originally Posted by the big d View Post
    I got the truck it has a 4l80, 265/75/16 tires and at 60 mph it is about 1600 rpms. I think its 3.73's but just wondering
    It sounds like 3.73's. Thats what I have. 2000 chevy silverado 2500.
    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. #3
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    +1
    Chris S The GoFastPadre 00 Sierra ECSB Z71 Mods so far Headers Dual HFC's Flowmasters K&N CAI and much more to come. 06 Grand Prix no mods yet

  4. #4
    Join Date
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    check the codes on the inside of your glove box. someone will chime in to tell you what code means which gears you have
    1951 3100
    1984 C10

  5. #5
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    DamnYankee posted a thread with all of the codes a wile ago.

  6. #6
    Join Date
    Jan 2008
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    Wasilla, AK
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    704
    It sounds like 3.73, but post up your "G" codes from your SPID label in your glove box, and we can tell you for sure. Give us the 3 digit codes that start with "G".
    2001 ECSB 4x4, 5.3, Radix, 3.0 pulley, VHP Trucker cam, 216/224 .551/.551 115 lsa, 1.8 Crane roller rockers, 4L65E, Yank SC3000, 3.73, Cal-Tracs, HPTuners.

  7. #7
    Join Date
    Jul 2007
    Posts
    50
    Either List All Your G Codes Like Listed Above Or Give Me The Last Eight Digits Of Your Vin Number And Ill Let You Know
    BAD BURB

  8. #8
    Join Date
    Mar 2007
    Posts
    5
    Or, just do it the dumb way. Sometimes the dumb way is the smart way.
    And that would be to mark the tires in you nice straight driveway, mark the driveshaft, and roll it along until the tire does one revolution, while counting the driveshart turns. Then of course, 3-3/4 driveshaft turns = 3.73, or 4-1/8 turns = 4.10s.

    Note: never do this with the truck running, especially with your wife at the wheel while you've got your head under the truck.

  9. #9
    Join Date
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    Location
    Fort Worth
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    9,578
    Yeah, go into the glove box, get the G code and Google it. EASY WAY.

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

  10. #10
    Join Date
    Jul 2007
    Posts
    50
    I Work In Parts At A Chevy Dealer,get The Info And Ill Verify For You
    BAD BURB

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