Best way to determine if a frame is straight - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jugernot · 10-20-2004, 09:43 PM

I am looking for a shor box frame. I want to make sure it is not bent. What is the best way to determine if it has any damage?

krue · 10-21-2004, 12:46 AM

I believe I read that Mothertrucker's has the specs and his local Furd dealer will check it for him? Maybe you can ask him for more details.

68LSS1 · 10-21-2004, 03:40 AM

Yes, Ed at Mothertruckers has the specs from GM if you want to get it on a frame machine. The Ford dealership by him charges about $75.00 to check it. Short of that you can get a pretty good idea by using a tape measure. Accuracy and detail is the key here. Make some measurements in a "X" shape. Pick a point like where a crossmember intersect with the frame and measure from the top at that side to a point on the opposite side. Take two measurements from the top of the frame rail to the top and bottom of the other side. Now start at the other frame rail and using the same points measure again. The measurements should match or be pretty darn close. Forward and aft shifts of the frame will show up easier, if you are real accurate you can tell if there are some height isssues (side to side).

10-20-2004, 09:43 PM	#1
jugernot Life, Be In It..... Join Date: Oct 2003 Location: Novato, California Posts: 1,498	Best way to determine if a frame is straight I am looking for a shor box frame. I want to make sure it is not bent. What is the best way to determine if it has any damage? __________________ Project Name: LEMON DROP. Reconstruction started "December 2000". Projected completion date "Who knows" http://67-72chevytrucks.com/vboard/s...d.php?t=200082

10-21-2004, 12:46 AM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	I believe I read that Mothertrucker's has the specs and his local Furd dealer will check it for him? Maybe you can ask him for more details. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

10-21-2004, 03:40 AM	#3
68LSS1 Registered User Join Date: Dec 2002 Location: Tampa Posts: 1,191	Yes, Ed at Mothertruckers has the specs from GM if you want to get it on a frame machine. The Ford dealership by him charges about $75.00 to check it. Short of that you can get a pretty good idea by using a tape measure. Accuracy and detail is the key here. Make some measurements in a "X" shape. Pick a point like where a crossmember intersect with the frame and measure from the top at that side to a point on the opposite side. Take two measurements from the top of the frame rail to the top and bottom of the other side. Now start at the other frame rail and using the same points measure again. The measurements should match or be pretty darn close. Forward and aft shifts of the frame will show up easier, if you are real accurate you can tell if there are some height isssues (side to side). __________________ '68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc

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