How long is your shaft? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

aitch · 08-06-2006, 08:04 AM

I'm still investigating installing a one piece shaft in my 383 LWB coil spring.

Of course, I'm hoping to find a direct fit and not have to have a custom shaft built.
In my search, I found someone who had installed an aluminum 4" shaft from a late model GM truck. (Not sure what transmission)

Does anyone have a one piece shaft installed behind a 700R4? What is the length of the shaft? Did you find a direct fit?

Thanks.

**Boog** · 08-06-2006, 08:28 AM

Isn't there a clearance issue with the long shaft going through the crossmember when raised or lowered? Then the weight of the thing if not aluminum.

**truckdude239** · 08-06-2006, 09:03 AM

why a one piece? if you get good quilty parts like ujoints and carrier bearing have the shaft balanced it should last for along time i just took the oringal carrier bearing off my driveshaft about 6months ago. plus alot of driveshaft shop wont make a drive shaft that long

aitch · 08-06-2006, 10:03 AM

I know the debate over whether or not this is a good idea. I believe that when I go from th400 to 700r4, I will have to do something with the driveshaft. It just seems that a late model 4" carbon fiber/composit/aluminum shaft would be better than a two piece. Certainly fewer moving parts. Less rotating mass. Probably 50% lighter. A carbon fiber shaft should eliminate vibration problems from shaft whip
With the planned 2.5/4 drop, there may be some clearance issues with the cross member.
So far, I'm more in favor of this mod than against.
Just not sure of the length and whether or not a direct fit is available.

Jayss109 · 08-06-2006, 12:47 PM

Im not sure of the length (i can measure later) But Ive got a 4 inch one piece shaft. Its behind a th400, and a cad500, so your measurements would be different. No issues with cross member, even with a 4inch spring drop in the back.
If you have the suspension hanging (ie truck on jackstands) the dshaft will touch the xmember slightly. no big deal.
been running it for almost 5 years with no issues.

J
________
CHILD AVANDIA

**yote1234** · 08-06-2006, 12:49 PM

well isn't that kinda personal?

JameslovesJammie · 08-06-2006, 12:58 PM

I thought the 700R4 and TH400 were the same length.

aitch · 08-06-2006, 06:54 PM

I thought the 700r4 was longer but don't know. Anybody running a 700r4 and a one piece shaft in their LWB?

aitch · 08-07-2006, 07:39 AM

ttt

08-06-2006, 08:04 AM	#1
aitch Senior Member Join Date: Sep 2004 Location: N.W. Arkansas Posts: 456	How long is your shaft? I'm still investigating installing a one piece shaft in my 383 LWB coil spring. Of course, I'm hoping to find a direct fit and not have to have a custom shaft built. In my search, I found someone who had installed an aluminum 4" shaft from a late model GM truck. (Not sure what transmission) Does anyone have a one piece shaft installed behind a 700R4? What is the length of the shaft? Did you find a direct fit? Thanks. __________________ 69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale)

08-06-2006, 08:28 AM	#2
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,140	Re: How long is your shaft? Isn't there a clearance issue with the long shaft going through the crossmember when raised or lowered? Then the weight of the thing if not aluminum. __________________ 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

08-06-2006, 09:03 AM	#3
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,233	Re: How long is your shaft? why a one piece? if you get good quilty parts like ujoints and carrier bearing have the shaft balanced it should last for along time i just took the oringal carrier bearing off my driveshaft about 6months ago. plus alot of driveshaft shop wont make a drive shaft that long __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

08-06-2006, 10:03 AM	#4
aitch Senior Member Join Date: Sep 2004 Location: N.W. Arkansas Posts: 456	Re: How long is your shaft? I know the debate over whether or not this is a good idea. I believe that when I go from th400 to 700r4, I will have to do something with the driveshaft. It just seems that a late model 4" carbon fiber/composit/aluminum shaft would be better than a two piece. Certainly fewer moving parts. Less rotating mass. Probably 50% lighter. A carbon fiber shaft should eliminate vibration problems from shaft whip With the planned 2.5/4 drop, there may be some clearance issues with the cross member. So far, I'm more in favor of this mod than against. Just not sure of the length and whether or not a direct fit is available. __________________ 69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale)

08-06-2006, 12:47 PM	#5
Jayss109 Active Member Join Date: May 2005 Location: San Jose, CA Posts: 235	Re: How long is your shaft? Im not sure of the length (i can measure later) But Ive got a 4 inch one piece shaft. Its behind a th400, and a cad500, so your measurements would be different. No issues with cross member, even with a 4inch spring drop in the back. If you have the suspension hanging (ie truck on jackstands) the dshaft will touch the xmember slightly. no big deal. been running it for almost 5 years with no issues. J ________ CHILD AVANDIA Last edited by Jayss109; 04-27-2011 at 11:40 PM.

08-06-2006, 12:49 PM	#6
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,330	Re: How long is your shaft? well isn't that kinda personal? __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

08-06-2006, 12:58 PM	#7
JameslovesJammie God Bless Mr. T Join Date: Apr 2004 Location: Minot, ND Posts: 348	Re: How long is your shaft? I thought the 700R4 and TH400 were the same length. __________________ Like a midget at a urinal...sometimes you must stay on your toes.

08-06-2006, 06:54 PM	#8
aitch Senior Member Join Date: Sep 2004 Location: N.W. Arkansas Posts: 456	Re: How long is your shaft? I thought the 700r4 was longer but don't know. Anybody running a 700r4 and a one piece shaft in their LWB? __________________ 69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale)

08-07-2006, 07:39 AM	#9
aitch Senior Member Join Date: Sep 2004 Location: N.W. Arkansas Posts: 456	Re: How long is your shaft? ttt __________________ 69 GMC 3/4 ton LWB 383 TH400 Dana 60 '84 300ZX '79 Nova (for sale)



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