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Thread: 3.36 vs 2.93

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    Full Access Member Misfit's Avatar
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    Default 3.36 vs 2.93

    With domestics, I know that a gear swap is probably the best bang for the buck. Then again, their choices are nearly unlimited.

    In a quest for improving part throttle response, I got to thinking about changing gear ratios. My XE has the 2.93 ratio. Would it be worth the trouble, in terms of performance, to swap over to 3.36 gears?

    I know that I'll need an ECU reflash to keep the speedometer and cc working properly.

    What about even lower gears? I think they are available, but do I lose cruise control function and accurate speedometer? Can UpRev fix any of this?

    With a lower gear ratio, I know that it will be even more important to get truetrac.

    I wish I could find a complete axle with truetrac and lower gears already installed. I could swap the axle out over the weekend and not worry with the hassle of finding a shop to do the work.
    Last edited by Misfit; 01-30-2010 at 02:43 PM.

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    Administrator nickspeed's Avatar
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    Finding an axle that has 3:36 in it would be the easy way to do it. Have TT put in and swap it over they go get it reflashed and your all set. Need to check with some one that has done it to make shure theres nothing else you got to do to make it work. I need an early rear to swap in to my 08, cause they dont make a TT for mine
    2008 KC XE BT
    Mods: DIY Intake mod, K&N Air filter,JWT CS2 CAMS, 09 piping/12278 18" Magnaflow

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    Super Moderator O-Fivecc's Avatar
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    I don't think the gains would be worth the money and trouble to do it. 3.73 IMO would be sweet, but yes you would lose CC
    Performance: Bullydog GT, AEM intake, JBA catback with 22" Mag muffler, no cats, 07 intake manifold
    Other mods: Nismo SS gauges, Graphite OEM 20's w/ Yokohama Parada Spec-X's, Graphite engine pieces, Springtech rear shackle, tinted tails and 3rd brake light, modded OEM headlights, Painted Eye-lids, Billet Grill, 8000k DDM HIDs in headlights and fogs, armada airdam, 9" LCD monitor

    13.33 at 103 w/ Nitrous

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    Administrator nickspeed's Avatar
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    And the fastest 1/4 mile times are 2:94 trucks right?
    2008 KC XE BT
    Mods: DIY Intake mod, K&N Air filter,JWT CS2 CAMS, 09 piping/12278 18" Magnaflow

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    Full Access Member mde's04Titan's Avatar
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    Quote Originally Posted by nickspeed View Post
    And the fastest 1/4 mile times are 2:94 trucks right?
    That is true!!
    2004 Deepwater Blue 2wd XE Crew Cab w/Pop Pkg-non BT--Exterior Mods--Wade In-Channel's; Chrome grill; TFP Stainless Fender Trim; Boss 315 20's machine finish w/silver in-lay; cross drilled and slotted rotors; fact step rails & diff cover from '06--Power Mods--K&N drop in; Factory Air Box mod; 2* timing advance; redone Y-pipe in stock size; Magnaflow 18" SISO w/chrome tip--Interior/Sound Mods--2 MA Audio 10's; Hi-fonics Brutus 1610-D; 2 sets Pioneer TS-D720C's; Autotek 66; Pioneer AVH-P3100DVD

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    Full Access Member Sleepertrk's Avatar
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    Quote Originally Posted by nickspeed View Post
    And the fastest 1/4 mile times are 2:94 trucks right?
    Not arguing this fact or saying its untrue by any means but how can that be?? When i was younger and building hot rods we couldn't wait to weld up the rear end and drop 4.11's in it to have a very quick 1/4 mile car. I'm confused.

    Can someone verify what models came with what gear ratios? I have the 2004 CC LE 4x4 BT model. I should have 3.73's right? So what got 3.36's and 2.94's. I would think the best combo would be a 2wd KC with TruTrac and 3.73's when using factory gears. Evidently this is not the case though.

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    Super Moderator O-Fivecc's Avatar
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    you have 3.36, BT Titans have the 3.36. I know Firelife tried his OEM 3.36's 3.73's and 4.11's alll at the track. He ended up settling on the 3.73's
    Performance: Bullydog GT, AEM intake, JBA catback with 22" Mag muffler, no cats, 07 intake manifold
    Other mods: Nismo SS gauges, Graphite OEM 20's w/ Yokohama Parada Spec-X's, Graphite engine pieces, Springtech rear shackle, tinted tails and 3rd brake light, modded OEM headlights, Painted Eye-lids, Billet Grill, 8000k DDM HIDs in headlights and fogs, armada airdam, 9" LCD monitor

    13.33 at 103 w/ Nitrous

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    Full Access Member Sleepertrk's Avatar
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    Quote Originally Posted by O-Fivecc View Post
    you have 3.36, BT Titans have the 3.36. I know Firelife tried his OEM 3.36's 3.73's and 4.11's alll at the track. He ended up settling on the 3.73's
    Thanks "O-Five" for clearing up what gears i have. So i'm guessing the Off-Road Titans have the 3.73's and the 2WD's have the 2.94's? Is that correcto?

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    Full Access Member Sleepertrk's Avatar
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    Hell my Peterbilt at work only has 3.36's with 475 HP. The catch is its got enough torque to rip your fuck'n head off your shoulders while pulling 54,000+ lbs in the tank trailer i pull. Too bad i can't just drop that Cat-15 in my CC LE Titan.

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    Full Access Member Sleepertrk's Avatar
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    Lets do a comparison:
    My 2004 CC LE 4x4 Titan is rated at 305 HP and 379 torque with 3.36 gear ratio. Titan weighs 5,137 lbs and can tow 9,500lbs. for a total operating weight of 14,637 (not bad)
    My 2003 379 Peterbilt with a 265" wheelbase is rated at 574 HP with its Cat-15 engine and 1850 torque with 3.36 gear ratio. Pete's actual max gross operating weight is 110,000lbs when you subtract my truck &trailer empty weight of 24,950 i can safely tow over 85,000 lbs. of product.
    Time to upgrade the Titan. LOL

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