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Laying the frame on OBS Ext-cab??

This is a discussion on Laying the frame on OBS Ext-cab?? within the Street forums, part of the General Discussion category; Ok, what's all involved in laying out on the frame on a OBS Ext-cab? I have been reading some post ...

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    under the knife since 95 LOWGREEN1's Avatar
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    Laying the frame on OBS Ext-cab??


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    Ok, what's all involved in laying out on the frame on a OBS Ext-cab? I have been reading some post now that says you have to cut the cab a little for the drive shaft?? I just need to know what all it takes..like notching for tie rods, step notch....ect. ect. Can somebody make a list or something?.. I will hopefully be bagging my truck soon and i don't want to run into any problems, but if I have to hack up my daily driven truck to much just to get it to lay frame, then I just might nix the idea of bags.

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    Xcentric Customs Beyond Static©'s Avatar
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    Re: Laying the frame on OBS Ext-cab??

    notch gas tank crossmember, notch same crossmember for the drivehaft. No cab notching is involved in an ext cab.

    up front, notch frame for tierods, notch top of front lca mounts, notch rear lca metal bumpstop
    2/4 drop, GMC 20's, 4:10 gears, Blackbear Tune

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    under the knife since 95 LOWGREEN1's Avatar
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    Re: Laying the frame on OBS Ext-cab??

    Ok so out back I need to
    1. step notch
    2. Notch and raise gas tank
    3. notch crossmember for drive shaft
    4. cut hole in bed for notch and rearend pumpkin
    and up front I need to
    1. notch for tie rod ends
    2. notch LCA bumpstop
    3. and section or remove inner fenders and cut actual fender inside skin.
    4. raise Y-pipe
    Is that all?
    Last edited by LOWGREEN1; 04-26-2005 at 07:15 PM.

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    Xcentric Customs Beyond Static©'s Avatar
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    Re: Laying the frame on OBS Ext-cab??

    yea, i'm pretty sure thats all

    tierod notch:




    front lca trimming, maybe 1/8" of trimming:



    metal rear lca bumpstop:
    2/4 drop, GMC 20's, 4:10 gears, Blackbear Tune

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    under the knife since 95 LOWGREEN1's Avatar
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    Re: Laying the frame on OBS Ext-cab??

    Ok in your second pic are you talking about trimming where the LCA folds up into there? I think you are but it's hard to tell if you have cut it or not. Also did you trim the rain gutters a little on the very ends?? It looks like you did, or am I seeing things?

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    Xcentric Customs Beyond Static©'s Avatar
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    Re: Laying the frame on OBS Ext-cab??

    In the 2nd pic, you can see where the piece of frame hit the lca's, and put a small gash in them. Thats what you gotta trim.

    The piece of the lca that is ground down a little is due to draggin. lol
    2/4 drop, GMC 20's, 4:10 gears, Blackbear Tune

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    Re: Laying the frame on OBS Ext-cab??

    cool. Thanks

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    Low Headlight Fluid... Smithers's Avatar
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    Re: Laying the frame on OBS Ext-cab??

    hey kyle

    what did you use to trim your front LCA mount?
    i was tryin to do it with a cut off wheel, and i didnt have enough room.
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    Re: Laying the frame on OBS Ext-cab??

    Quote Originally Posted by Smithers
    hey kyle

    what did you use to trim your front LCA mount?
    i was tryin to do it with a cut off wheel, and i didnt have enough room.
    I just ground it with a die grinder
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    Re: Laying the frame on OBS Ext-cab??

    die grinder with the cone shaped bit. Those things work wonders!
    2/4 drop, GMC 20's, 4:10 gears, Blackbear Tune

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    Re: Laying the frame on OBS Ext-cab??

    I used a cut-off wheel to do the the lca mounts on the last truck worked pretty well for me.

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    Re: Laying the frame on OBS Ext-cab??

    hey, be careful when you notch the gas tank crossmember since it does support a lot. Be sure to reenforce it if you have to take out a lot, or you might risk it breaking when you hit the bags up b/c of the force. I just made a new crossmember, but if you want to keep your stock gas tank i would just weld in a brace. good luck. peace

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    Re: Laying the frame on OBS Ext-cab??

    hey static, how did you keep your front sway bar and still lay frame? I had to leave mine off b/c it hit the frame and steering linkage and wouldnt let me lay out.

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    Re: Laying the frame on OBS Ext-cab??

    i used a sawzall for my LCA notch.. it was mighty quick.

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    Re: Laying the frame on OBS Ext-cab??

    dont forget to cut the bed for tire clearance as well.
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    Re: Laying the frame on OBS Ext-cab??

    Quote Originally Posted by rhinoman
    hey static, how did you keep your front sway bar and still lay frame? I had to leave mine off b/c it hit the frame and steering linkage and wouldnt let me lay out.
    Mine didnt hit anything. It's 100% stock, untrimmed. I can prolly lay on 22's, and it wont bind up. Guy I know put an aftermarket sway bar on his, and it was about 1/2" narrower than mine, and hit his frame.
    2/4 drop, GMC 20's, 4:10 gears, Blackbear Tune

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