73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => The Lows (Lowering/Drops) => Topic started by: corys78 on March 28, 2002, 12:34:00 pm
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does any company sell plans to make c-notches. Or does any one have plans on how to make them.
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Cory - notchin' isn't too difficult - the issues are addressing the stresses in that area (and accounting for trailering if you're going to) in the reduced corss secion of the frame -- that's why most places will use 1/4" materials...
The newer high-strength fromaes don't take too well to welding (localized heats) so they'll need bolt-on notches with pretty tight tollerances -- I've had great success working with bolt-in notches that sandwich the existing frame for thhe new stuff...
If you're working in the old world - building/welding one on the frame is doable - and pretty giggered easy - again, you address the strength issues of reducing the web-area of the existing frame and only put in the clearance that you need (where you need it) . (see photos.yahoo.com/lo_burb for a welded insitu notch on a burban)
really the costs associated with a pre-fabricated notch are not too bad and the pre-fab will take much of the stress calculations and placement issues into consideration. the notching is something you really won't wanna mess-up and you'll need to know where everything will be ending-up before you start...