what do I need to swap TH350 to 700R4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

heavy70 · 01-11-2008, 09:27 PM

What do I need to do to swap out my TH350 to a 700R4 in a lwb truck? The 700R4 is out of a 89 model.

70GMCer · 01-12-2008, 03:12 AM

Do a search. There's alot of write ups on this.

**VetteVet** · 01-12-2008, 04:28 AM

http://67-72chevytrucks.com/vboard/s...ad.php?t=33266

jkaylor68gmc · 01-12-2008, 04:55 AM

Trans, Driveshaft, dipstick, kickdown, move the crossmember back, converter, lock-up module if its a lock-up.

I think that is it.

mrein3 · 01-12-2008, 08:48 AM

Quote:

Originally Posted by jkaylor68gmc

Trans, Driveshaft, dipstick, kickdown, move the crossmember back, converter, lock-up module if its a lock-up.

I think that is it.

Unless you have a 4x4. Then you need an Advanced Adapters "700r4 in place of a th350 output shaft" and no crossmember changes. And you'll need to move your engine forward which means you need to work on your cooling fan. Or leave the engine where it is and lengthen the front driveshaft and shorten the rear.

piecesparts · 01-12-2008, 10:11 AM

Is the 350 a long output shaft tube or a short output shaft tube? There were two different lengths over the years.

01-11-2008, 09:27 PM	#1
heavy70 Registered User Join Date: Dec 2007 Location: choctaw, oklahoma Posts: 100	what do I need to swap TH350 to 700R4 What do I need to do to swap out my TH350 to a 700R4 in a lwb truck? The 700R4 is out of a 89 model.

01-12-2008, 03:12 AM	#2
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: what do I need to swap TH350 to 700R4 Do a search. There's alot of write ups on this. __________________ 1997 GMC Sierra Ext 1965 Mustang

01-12-2008, 04:28 AM	#3
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,709	Re: what do I need to swap TH350 to 700R4 http://67-72chevytrucks.com/vboard/s...ad.php?t=33266 __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

01-12-2008, 04:55 AM	#4
jkaylor68gmc Senior Member Join Date: Dec 2005 Location: TN Posts: 2,448	Re: what do I need to swap TH350 to 700R4 Trans, Driveshaft, dipstick, kickdown, move the crossmember back, converter, lock-up module if its a lock-up. I think that is it. __________________ 1947 International KB-1 1957 Chevy Bel-Air riding low 1962 swb fleetside 2002 Chevrolet Silverado 7-inch lift on 35 Daily driver 2016 Chevy Tahoe Better halves ride

01-12-2008, 10:11 AM	#6
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: what do I need to swap TH350 to 700R4 Is the 350 a long output shaft tube or a short output shaft tube? There were two different lengths over the years.

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