Hey all,
So, I am the owner of a 2001 Chevy C3500HD, of the medium length variety (~159" wheelbase, if I remember correctly). I recently purchased a crew cab (just the cab) from a 2000 C3500, and am beginning to strip them down in preparation for putting the crew can onto the HD frame.
I found a PDF of the GM upfitter manual, so I have plenty of dimensions and specifications. I think I know what I'm in for as far as stretching the portion of the frame under the cabin, I'm probably going to have some lengths of channel fabbed up to spec and do all of the cutting and welding myself. Clearly, I'm also going to have to fabricate some new body mounts and alter the lengths of the driveshaft, brake lines, etc. Does anyone have any information about any other aspects of this process? Have any of you done this yourselves before?
I'm also interested in converting to four wheel drive in the future, most likely by trying to hunt down a 4x4 4L80e with a push-button transfer case, but I'm also open to the idea of a divorced case. What do I need to know and be prepared for as to the addition or alteration of crossmembers?
Thanks in advance for any info / help you can provide, this website is a treasure trove.