70 TH400 crossmember - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69Tom · 02-09-2020, 05:43 PM

Can someone please let me know which direction this TH400 crossmember goes in my frame? Single hole towards the front of the truck or multiple holes? Thanks.

Also I have multiple holes in my frame from factory. Which are the correct ones?

**FirstOwner69** · 02-09-2020, 10:13 PM

Does this help? My '69 3/4 ton.

69Tom · 02-09-2020, 10:33 PM

I believe that answers my question. One hole faces towards the rear.

Thanks!

**Steeveedee** · 02-09-2020, 10:45 PM

Do you have a SBC or BBC in your truck? That may make a difference.

69Tom · 02-09-2020, 11:02 PM

BBC will be in the truck with a TH400.

**FirstOwner69** · 02-09-2020, 11:10 PM

Quote:

Originally Posted by Steeveedee

Do you have a SBC or BBC in your truck? That may make a difference.

Good point. Mine pictured is a SBC 350. I don't know the answer.

69Tom · 02-10-2020, 02:44 PM

Can anyone else help out?

Thanks!

geezer#99 · 02-10-2020, 03:39 PM

It can only fit one way.
Trans mount to the front.
If you try trans mount to the rear, the crossmember hits the pan.

**Steeveedee** · 02-10-2020, 04:41 PM

Quote:

Originally Posted by geezer#99

It can only fit one way.
Trans mount to the front.
If you try trans mount to the rear, the crossmember hits the pan.

Boy do I feel dumb now.

69Tom · 02-10-2020, 04:49 PM

There's no trans mount on the crossmember. The holes for the trans mount are dead center in the crossmember. I also want to know what holes in the frame to use for mounting.

02-09-2020, 05:43 PM	#1
69Tom Registered User Join Date: Jul 2015 Location: Phoenix, AZ Posts: 1,335	70 TH400 crossmember Can someone please let me know which direction this TH400 crossmember goes in my frame? Single hole towards the front of the truck or multiple holes? Thanks. Also I have multiple holes in my frame from factory. Which are the correct ones? Attached Images

02-09-2020, 10:13 PM	#2
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,846	Re: 70 TH400 crossmember Does this help? My '69 3/4 ton. Attached Images

02-09-2020, 10:33 PM	#3
69Tom Registered User Join Date: Jul 2015 Location: Phoenix, AZ Posts: 1,335	Re: 70 TH400 crossmember I believe that answers my question. One hole faces towards the rear. Thanks!

02-09-2020, 10:45 PM	#4
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,516	Re: 70 TH400 crossmember Do you have a SBC or BBC in your truck? That may make a difference. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

02-09-2020, 11:02 PM	#5
69Tom Registered User Join Date: Jul 2015 Location: Phoenix, AZ Posts: 1,335	Re: 70 TH400 crossmember BBC will be in the truck with a TH400.

02-10-2020, 02:44 PM	#7
69Tom Registered User Join Date: Jul 2015 Location: Phoenix, AZ Posts: 1,335	Re: 70 TH400 crossmember Can anyone else help out? Thanks!

02-10-2020, 03:39 PM	#8
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,661	Re: 70 TH400 crossmember It can only fit one way. Trans mount to the front. If you try trans mount to the rear, the crossmember hits the pan.

02-10-2020, 04:49 PM	#10
69Tom Registered User Join Date: Jul 2015 Location: Phoenix, AZ Posts: 1,335	Re: 70 TH400 crossmember There's no trans mount on the crossmember. The holes for the trans mount are dead center in the crossmember. I also want to know what holes in the frame to use for mounting.



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