TH400 Crossmember placement Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ChevLoRay · 06-04-2011, 04:29 PM

You know how when you take stuff apart and you make those "mental" notes about where stuff goes? Yeah, we did that when we stripped the '69 SWB chassis down for sandblasting and painting. So, today we put the crossmember back into the chassis....and the mental notes are gone.

From the center-to-center placement of the holes in the crossmember, we found one good set of holes in the frame that line-up. I don't have a picture, but hopefully I can get one today. The chassis is at my sons' house....

Anybody got an answer or picture that shows what I'm asking about?

**Boog** · 06-04-2011, 08:10 PM

I don't have any pics for you Don but if you are going to drop the engine and trans in together just measure the distance from the engine mount to the trans mount and set the xmember accordingly.

ChevLoRay · 06-05-2011, 09:24 AM

Jim, it isn't bolted in-place, but I think we have it right. It won't be a big deal to adjust the position when the engine/tranny are ready to install. Gotta get the chassis up on 4 wheels, first. Still gonna get the rear end sandblasted externally and painted, before we pull the axles and backing plates to refinish it. Nothing happens as quickly as we like, but my son is the eternal optimist, as well as the one cracking the whip, and he foresees it being on all 4 by July 4. I hope he's right. That would be sweet. Still gotta get some $$$ to buy the new brake lines and cables, as well as a gas tank to go beneath the bed. I'm gonna go hit up a couple of boat shops and see if they have anything that might fit.

*Fitz* · 06-06-2011, 01:25 PM

Quote:

Originally Posted by ChevLoRay

From the center-to-center placement of the holes in the crossmember, we found one good set of holes in the frame that line-up. I don't have a picture, but hopefully I can get one today. The chassis is at my sons' house....

Anybody got an answer or picture that shows what I'm asking about?

This is a Turbo 400 behind a big block on stock 67 396 frame stands and mounts. The tail snout on the turbo 400 has been replaced by the front half of a gear vendors overdrive but they are the same length. In the picture, use the rear set of holes in your frame for the trans crossmember as I did, the front ones fit a turbo 350.

06-04-2011, 04:29 PM	#1
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	TH400 Crossmember placement Question You know how when you take stuff apart and you make those "mental" notes about where stuff goes? Yeah, we did that when we stripped the '69 SWB chassis down for sandblasting and painting. So, today we put the crossmember back into the chassis....and the mental notes are gone. From the center-to-center placement of the holes in the crossmember, we found one good set of holes in the frame that line-up. I don't have a picture, but hopefully I can get one today. The chassis is at my sons' house.... Anybody got an answer or picture that shows what I'm asking about? __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

06-04-2011, 08:10 PM	#2
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,136	Re: TH400 Crossmember placement Question I don't have any pics for you Don but if you are going to drop the engine and trans in together just measure the distance from the engine mount to the trans mount and set the xmember accordingly. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

06-05-2011, 09:24 AM	#3
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: TH400 Crossmember placement Question Jim, it isn't bolted in-place, but I think we have it right. It won't be a big deal to adjust the position when the engine/tranny are ready to install. Gotta get the chassis up on 4 wheels, first. Still gonna get the rear end sandblasted externally and painted, before we pull the axles and backing plates to refinish it. Nothing happens as quickly as we like, but my son is the eternal optimist, as well as the one cracking the whip, and he foresees it being on all 4 by July 4. I hope he's right. That would be sweet. Still gotta get some $$$ to buy the new brake lines and cables, as well as a gas tank to go beneath the bed. I'm gonna go hit up a couple of boat shops and see if they have anything that might fit. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.



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