Original Tranny Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dads72 · 07-20-2003, 06:40 PM

72 C10
Did it come with a (don't know the correct term) long or short rear housing piece on the transmission?
Thanks

crazy longhorn · 07-20-2003, 06:44 PM

short tail(6" on the 350t equipped, & 4" tail on the 400 T equipped) crazyL

Dads72 · 07-20-2003, 10:25 PM

Confused here.
Isn't 4" shorter than 6?
My wife seems to think so, but we won't go there.

"short tail(6" on the 350t equipped, & 4" tail on the 400 T equipped)"

The original (I thought) tranny and engine has been out of the truck for quite awhile. It has a short tail on it it.
A friend stopped by tonight and said the original trannys had the long tail on them.
Just trying to figure out if the tranny I have is original, before I have it rebuilt.
Thanks

Hotrod70C10 · 07-20-2003, 10:27 PM

[QUOTE]Originally posted by Dads72

Isn't 4" shorter than 6?
My wife seems to think so, but we won't go there.

LOL!

Class of 69 · 07-20-2003, 10:40 PM

The tail housings on a TH350, and a TH400 are not interchangable, so not really relevant. By 72 GM had dropped the long tail housing in favor of the short for all applications. You may see long tails on older trucks, and especially with Powerglides, but my money is on a short tail in your's......Hotrod 70C10... you have a smart woman!! A lot of women have trouble judging distance because most of their life thay have been told 4" is 6!!

Longhorn Man · 07-20-2003, 11:07 PM

I am pretty sure the long shaft trannys were for later vehicles.
Example, the TH350 was a new tranny for the 67 - 72 trucks, yet they were all short shaft.

Tx Firefighter · 07-20-2003, 11:15 PM

TH350s were made with 6,9, and 12 inch tailhousings.

All the trucks I've ever had came stockwith a 6 inch version.

The 9 incher is the one that is the same as 700r4 in overall length, so they are sought after to replace crapped out 700s by cheap folks.

12 incher was used is some vans and stationwagons.

If you run a 9 inch version TH350 on a 67-72 shortbed, you can get a used driveshaft that is already the right length and do away with the old 2 piece unit from

1. a 67-72 short bed 3 speed 6 cyl truck
2. an early 80s model short bed 700r4 truck

I put my small block on correct small block mounts and used a 9 inch 350. I was able to use the stock 6 cyl 3 spd one piece driveshaft. Later, I replaced the TH350 with a 700r4 and reused the same shaft. My trans guy charges the same to build me a TH350, no matter what length, so I used the 9 and saved money on having a driveshaft built. I'm cheap, and my truck originally was a 6 cyl 3 spd so I had the shaft laying around.

07-20-2003, 06:40 PM	#1
Dads72 Registered User Join Date: Nov 2002 Posts: 427	Original Tranny Question 72 C10 Did it come with a (don't know the correct term) long or short rear housing piece on the transmission? Thanks

07-20-2003, 06:44 PM	#2
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	short tail(6" on the 350t equipped, & 4" tail on the 400 T equipped) crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

07-20-2003, 10:27 PM	#4
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	[QUOTE]Originally posted by Dads72 Isn't 4" shorter than 6? My wife seems to think so, but we won't go there. LOL! __________________ 70' C-10 LWB Fleetside 4.5/6 drop

07-20-2003, 10:40 PM	#5
Class of 69 Registered User Join Date: Mar 2003 Location: Stillwater MN Posts: 1,166	The tail housings on a TH350, and a TH400 are not interchangable, so not really relevant. By 72 GM had dropped the long tail housing in favor of the short for all applications. You may see long tails on older trucks, and especially with Powerglides, but my money is on a short tail in your's......Hotrod 70C10... you have a smart woman!! A lot of women have trouble judging distance because most of their life thay have been told 4" is 6!! __________________ 69 GMC K10 ..some restoration required....still..

07-20-2003, 10:25 PM	#3
Dads72 Registered User Join Date: Nov 2002 Posts: 427	Confused here. Isn't 4" shorter than 6? My wife seems to think so, but we won't go there. "short tail(6" on the 350t equipped, & 4" tail on the 400 T equipped)" The original (I thought) tranny and engine has been out of the truck for quite awhile. It has a short tail on it it. A friend stopped by tonight and said the original trannys had the long tail on them. Just trying to figure out if the tranny I have is original, before I have it rebuilt. Thanks

07-20-2003, 11:07 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	I am pretty sure the long shaft trannys were for later vehicles. Example, the TH350 was a new tranny for the 67 - 72 trucks, yet they were all short shaft.

07-20-2003, 11:15 PM	#7
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	TH350s were made with 6,9, and 12 inch tailhousings. All the trucks I've ever had came stockwith a 6 inch version. The 9 incher is the one that is the same as 700r4 in overall length, so they are sought after to replace crapped out 700s by cheap folks. 12 incher was used is some vans and stationwagons. If you run a 9 inch version TH350 on a 67-72 shortbed, you can get a used driveshaft that is already the right length and do away with the old 2 piece unit from 1. a 67-72 short bed 3 speed 6 cyl truck 2. an early 80s model short bed 700r4 truck I put my small block on correct small block mounts and used a 9 inch 350. I was able to use the stock 6 cyl 3 spd one piece driveshaft. Later, I replaced the TH350 with a 700r4 and reused the same shaft. My trans guy charges the same to build me a TH350, no matter what length, so I used the 9 and saved money on having a driveshaft built. I'm cheap, and my truck originally was a 6 cyl 3 spd so I had the shaft laying around.



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