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Old 06-16-2010, 01:43 PM
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bent frame rails

76 chevy pickup with the front frame rails slightly bent to left. Truck drives fine but was hit in the front bumper and bent the rails. Any way to straighten without a frame machine? Chain and a tree?

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Old 06-16-2010, 01:48 PM
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You might get lucky with a tree and chain, but doubtful.....Probably, the cheapest method would be to buy a frame and put your cab etc on it.....there are tons of them around
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Old 06-16-2010, 02:51 PM
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Tree, post, or Tractor,... chain, BFH, and a com-a-long. Pull one rail at a time in reverse of the direction it was pushed in, stress relieve rail with the big Dead Blow, brass, or lead hammer, as it is pulled into position a little at a time. Not that hard but you need to duplicate/reverse the direction of the original force that caused the damage. take your time and go slow with it.

If it is bent back past the beginning of the under engine crossmember you will likely be out of luck as you won't be able to move the whole front frame as an assembly.

If it is more than just bumper and core support areas out of line, Poncho62 is right, these frames are everywhere. '73-87 is interchangable.
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Old 06-16-2010, 07:05 PM
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Check with a small body shop that has a frame machine. I've pulled tons of those frames with a cheif e-z liner and its a peice of cake. Takes maybe a hour or two if you know what your doing.Should'nt cost that much and your bumper will line up when done.
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Old 06-16-2010, 11:43 PM
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Thanks for the advice guys. One more question. The bent rails are easy to see where it bolts to the bumper but I don't see anything else wrong past the crossmember. Is there an easy way to check for more damage like measuring or are you just looking for a bend/kink in the rails?
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Old 06-17-2010, 07:01 PM
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Check on each side of your frame rails there should be a hole or a bolt head or nut something like that on each side in the same spot and measure from your lower ball jouint grease fitting to that point on both side they should be the same or with in about a 1/8 inch. If not your frame is bent behind the crossmember. If you need it I'am sure I have a page in my old frame books for this truck. All so look at the gap between the back of the cab to box and rear of box to the bumper. Those gaps should be close to the same. These frame where known to get a diamound in them when hit.
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