Crossmember location for a TH400 on a SWB - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**leddzepp** · 10-27-2009, 05:44 PM

I am wondering which holes are used on the frame for mounting the OEM crossmember for a TH400 trans, coupled to a 402 in a SWB frame, 2wd? Here is a pic of the passenger side frame rail, showing the crossmember as it sits now. Does it need to go forward, or backwards from where it is now? The frame/cab mount you see at the bottom of the pic is the front mount on the passenger side of the frame. (I know it looks like the rear mount on the drivers side from the way I took the pic

) I want to get it set in the proper place, so I can see how close the driveshaft I have is to fitting.

**leddzepp** · 10-27-2009, 05:50 PM

Here is a wider shot, so you can tell where I took the close-up from.

Twisted78SS · 10-27-2009, 06:05 PM

I don't remember either, tagging along for the answer..

*Fitz* · 10-27-2009, 06:09 PM

My 67 stepside shortbed has two sets of holes that allow the crossmember to be installed in three different positions...all the way forward for a turbo 350
in an intermediate location for what have you. I used the back tow holes to install a turbo 400 with the crossmember supporting a gear vendors overdrive.

10-27-2009, 05:44 PM	#1
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,008	Crossmember location for a TH400 on a SWB I am wondering which holes are used on the frame for mounting the OEM crossmember for a TH400 trans, coupled to a 402 in a SWB frame, 2wd? Here is a pic of the passenger side frame rail, showing the crossmember as it sits now. Does it need to go forward, or backwards from where it is now? The frame/cab mount you see at the bottom of the pic is the front mount on the passenger side of the frame. (I know it looks like the rear mount on the drivers side from the way I took the pic ) I want to get it set in the proper place, so I can see how close the driveshaft I have is to fitting. Attached Images __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man Last edited by leddzepp; 10-27-2009 at 05:46 PM.

10-27-2009, 05:50 PM	#2
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,008	Re: Crossmember location for a TH400 on a SWB Here is a wider shot, so you can tell where I took the close-up from. Attached Images __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man

10-27-2009, 06:05 PM	#3
Twisted78SS Wide n'Low Join Date: Jan 2007 Location: La Center, WA Posts: 1,511	Re: Crossmember location for a TH400 on a SWB I don't remember either, tagging along for the answer.. __________________ Trippin Hazard.. 67 swb, Gold Member.. 68 Suburban Air Force Retired

10-27-2009, 06:09 PM	#4
Fitz Account Suspended Join Date: Jan 2007 Location: Tucson Posts: 2,183	Re: Crossmember location for a TH400 on a SWB My 67 stepside shortbed has two sets of holes that allow the crossmember to be installed in three different positions...all the way forward for a turbo 350 in an intermediate location for what have you. I used the back tow holes to install a turbo 400 with the crossmember supporting a gear vendors overdrive. Attached Images



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