The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - For Those Doing Disk Brakes. 60-66

63sbssbbw · 05-09-2010, 08:01 AM

Trouble in paradise guys
The 63 gmc xm dropped out easy,but when I went to test fit the 75 xm to see which holes I needed to modify it only went in after using 2" ratchet straps(1 ahead and 1 behind) to suck the framerails together and still needed a BFH to get it to go in
Did a raft of measurements after the body was removed and came to the conclusion that it's not tweaked,bent or twisted.
So what gives????
I'm going to do some comparing today to see where the differences are.
This has me scratching my head after every thread I've read on this subject stated that
it was a pretty easy swap.
any ideas??
Thanks,Trent

05-09-2010, 08:01 AM	#100
63sbssbbw UCA63 Join Date: Aug 2005 Location: Lloydminster AB Can. Posts: 1,637	Re: For Those Doing Disk Brakes. 60-66 Trouble in paradise guys The 63 gmc xm dropped out easy,but when I went to test fit the 75 xm to see which holes I needed to modify it only went in after using 2" ratchet straps(1 ahead and 1 behind) to suck the framerails together and still needed a BFH to get it to go in Did a raft of measurements after the body was removed and came to the conclusion that it's not tweaked,bent or twisted. So what gives???? I'm going to do some comparing today to see where the differences are. This has me scratching my head after every thread I've read on this subject stated that it was a pretty easy swap. any ideas?? Thanks,Trent __________________ member#7816 "63 sb ss bbw 350\350 12 bolt rear Pwr Fr Disc PS tilt '61 GMC in progress '63 GMC to use for parts '90 Chevy Ext cab sbfs 5.7l (current d d)