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  1. #1

    Default 3/4 ton torsion key on a 1500

    Greetings All,
    I saw a truck yesterday that had some 285 tires on it. It looked like a lot of rubber! The front clearance looked close but it had plenty of room in the rear. I asked the guy if he had any lift work done. He said all he had done was install some Torsion Keys from a 2500 truck. Is that something that is being done?

    1989 Chevy V1500 Suburban 4X4, long tube headers & xover pipe. w/1985 350 4bbl.
    2002 Silverado 1500 5.3L Ext. Cab
    2005 Wrangler Rubicon 4.0L
    1990 Miata

  2. #2
    Sr. Engineer
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    285,s will fit without raising the torsion bars any . If you go any bigger can use bars to lift up to 2" any over this
    Will mess with alignment.
    Is that forest hills N C? if so i used to live there when i was a kid.
    Last edited by dipstick; 04-03-2012 at 05:04 PM.
    RESIDENT NUT.....MY CLAIM TO FAME .....

  3. #3

    Default

    No, I'm in Maryland. Apparently there is a Forest Hill in many states, cause I hear that alot........

  4. #4
    Master Mechanic Jimmeh's Avatar
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    You can use 3/4 ton keys but as mentioned, you will need an alignment afterwards. Not sure how they compare to adding height to just a regular leveling kit to your truck. I know for a fact that the 03-06 trucks can run 33's without a leveling kit since I ran with that setup for a year with minimal rubbing daily driving, but just comparing my dads 2000 to mine, his seems to ride a little lower and would be skeptical if he could run bigger than 265's without some rubage on stock.

    Also remember that when you go up a tire size, you will need to recalibrate your speedo.
    2005 Chevy Silverado W/T
    4X4|4.8 with some mods (has only slightly more pull than a 5.3)|Auto|4 door ex cab|Cooper Discoverer AT/3's in 285-75/17's on Helo 842's|Cooper Discover M+S 265-75/17's on Devino DV349's|Flowmaster 40 Single in Dual out with custom bent pipe from the end of the cats back|2" Procomp leveling kit|Custom made center console|Custom dyno tunes|Air Raid CAI|Air Raid Throttle Body Spacer|Apex brand topper|Kenwood Head Unit with Kenwood speakers|Painted mirrors/grille|Debadged except front emblem|Bilsteins front and rear
    Planned mods not in order
    2 inch lift|Custom front/rear bumper|hitch tire carrier|roof basket on topper, bars on cab|finish center console build|install Midland CB|Power options|Tint|Custom made raised bed in the bed of the truck|Lund LunarVisor
    Also have a 1992 Ford Ranger with a lot of stuff done to it. Currently waiting for a bit of a rebuild.


    "The only woman I'm pimping from now on is Sweet Lady Propane. And I'm tricking her out all over this town."

  5. #5

    Default

    I have a 2002 silverado, and had 285/75r16 with stock height. Didn't crank the torsion bars at all. Upgraded to 33x12.50r18 and i had rubbing issues. AS for the torsion keys, the 2500 will fit the 1500, but if you want to cheap out, buy torsion keys off of a stock early 2000's F150 from a junk yard, they fit and have an offset to raise the truck around 3".
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    2002 Chevrolet Silverado 1500 z71 1985 Chevrolet Silverado k10 2006 Chevrolet Silverado 2500hd 6.6l LLY Duramax
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  6. #6
    Sr. Apprentice TnT817's Avatar
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    Won't cranking up the torsion bars wear out the front end a lot faster because of the cv and ball joint angles?

  7. #7
    Master Mechanic Jimmeh's Avatar
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    Quote Originally Posted by TnT817 View Post
    Won't cranking up the torsion bars wear out the front end a lot faster because of the cv and ball joint angles?
    Yes. And because you can't have less than 10 letters in a post, I will say "Yes" again....along with all the rest of that.

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