Help with front cross sill - The 1947 - Present Chevrolet & GMC Truck Message Board Network

del · 09-24-2009, 10:52 PM

I accidentally ordered a 1947-50 front cross sill for the bed of my pickup, but have a 1953 pickup. Does anyone know what the difference will be with the 51-53 front cross sill. If it is only the location of the bolt holes I can manage. I live in Hawaii and shipping the part back is very expensive. Thank you

**truckdude239** · 09-27-2009, 08:41 AM

i am not sure here is a ttt for ya

63 & 64 Bowties · 09-27-2009, 10:38 AM

I think the holes won't line up where it mounts on the frame.
If you have the sills and the truck, you may want to check it out. When I did my 54 I got some used sills that didn't work. I just assumed that all 47-54 would use the same ones, but it didn't work out for me. So, you may want to check that out first.

OrrieG · 09-27-2009, 01:31 PM

The factory assembly manual will have the bolt/rivet dimensions. All I have is a TF manual. Maybe someone with a AD will look it up and post the difference.

This might help:

http://www.gmcpauls.com/47-72_BedWood_Info.htm

It has the spacing of the boards shown, which will show the difference in the locations. You could also match it up with one of the other cross sill to transfer the hole locations. Additional holes will not cause a problem the strength is in the vertical sides of the sill not the top.

09-24-2009, 10:52 PM	#1
del Registered User Join Date: Jul 2009 Location: Honolulu, Hawaii Posts: 38	Help with front cross sill I accidentally ordered a 1947-50 front cross sill for the bed of my pickup, but have a 1953 pickup. Does anyone know what the difference will be with the 51-53 front cross sill. If it is only the location of the bolt holes I can manage. I live in Hawaii and shipping the part back is very expensive. Thank you

09-27-2009, 08:41 AM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,217	Re: Help with front cross sill i am not sure here is a ttt for ya __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

09-27-2009, 10:38 AM	#3
63 & 64 Bowties and a few others Join Date: Jun 2007 Location: Blue Ridge Mountains of VA Posts: 5,638	Re: Help with front cross sill I think the holes won't line up where it mounts on the frame. If you have the sills and the truck, you may want to check it out. When I did my 54 I got some used sills that didn't work. I just assumed that all 47-54 would use the same ones, but it didn't work out for me. So, you may want to check that out first. __________________ Bill US Army Vet -193rd Infantry BlueRidgeMuscleCars.com “The greatness of a nation and its moral progress can be judged by the way its animals are treated” Gandhi

09-27-2009, 01:31 PM	#4
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Help with front cross sill The factory assembly manual will have the bolt/rivet dimensions. All I have is a TF manual. Maybe someone with a AD will look it up and post the difference. This might help: http://www.gmcpauls.com/47-72_BedWood_Info.htm It has the spacing of the boards shown, which will show the difference in the locations. You could also match it up with one of the other cross sill to transfer the hole locations. Additional holes will not cause a problem the strength is in the vertical sides of the sill not the top. __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project Last edited by OrrieG; 09-27-2009 at 01:42 PM.



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