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#1 |
Registered User
Join Date: Dec 2007
Location: choctaw, oklahoma
Posts: 100
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Two piece driveline to one piece?
I have a lwb and I want to do away with the carrier bearing! Would one out of a van work? How much would I have to cut? My truck is dropped 6" in the rear how would this affect clearance if any?
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Two piece driveline to one piece?
before you do any cutting or hard planning, measure your driveshaft from center of the U-joint in the tranny to the center of the U-joint in the rear axle. Then measure the diameter of the shaft.
Now, call your drive shaft shop. It will either be real real expensive, or they'll tell you they won't do it. |
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#3 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Two piece driveline to one piece?
The length of the driveshaft is critical in determining whether or not a one-piece shaft can be done. The crux of the matter is if it is too long for the other dimensions, the driveshaft can develop a whipping action, meaning that the shaft can, or will, flex as it rotates. That may not be a good thing. It is one reason why we have two-piece driveshafts, but not the only reason.
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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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#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Two piece driveline to one piece?
exactly. I got sick of getting flamed and called a retard (in PMs and e-mails naturally) for telling ppl that.
6 foot long is the longest you'll want to make a *normal* shaft. Most shops won't make one longer. And the ones that will, will make your wallet bleed. There is nothing wrong with a 2 piece shaft, they are better in many ways. The only drawback, people beating them with hammers to replace the carrier bearing, and the cost of the bearing and one u-joint. |
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#5 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Two piece driveline to one piece?
I agree with the hammer method. I had a shop right after I got the truck replace the carrier bearing and when I went to check on it the guy was beating the crap out of it with a 5lbs. sledge hammer. As I was walking up the weight flew off and hit my leg. Needless to say I stoped him and got the owner. They paid the $150.00 bill to have it done right at a another shop. I haven't done anymore buisness with them since.
This same drive shaft has last almost 12 years so far without any problems. I keep it greased and the angle is correct for my truck.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#6 |
72 Chevelle Club
Join Date: Jun 2007
Location: Newton , Iowa
Posts: 2,052
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Re: Two piece driveline to one piece?
I had a one piece made for mine . It was quite expensive and it is under 6' .I can't remember exact length without measuring it. It was 3 yrs ago and I think I paid $400 for it . The reason I did this is because my 2 piece was destroyed in a act of burning the rear tires the carrier was broke from the cross member and screwed up the splines on the shafts . I have have had no problems with my one piece . I also would not recommend for everyone and let a shop make the call. My 2cents worth.
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I Have The Right To Remain Silent,But Lack The Ability 1972 Chevelle ... Mine 2006 Trailblazer... Hers 2002 Buick century ... Kids 2002 K1500 Z-71 EXT CAB ... Daily Driver 2005 Rockwood Roo ... For Camping 1974 Harley-Davidson XLH Sportster 84'' stroker |
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#7 | |
Senior Member
![]() Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
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Re: Two piece driveline to one piece?
Quote:
I thought about going to a one-piece for a while, but then I thought it might be better to simply get a higher quality set of U-joints, and a higher quality carrier bearing. Don't get the el-cheapo-s. With a solid set of U-joints and a good carrier bearing you'll have a stronger driveline than a one-piece that's too long at higher torque and RPMs.
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'69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. |
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#8 | |
Senior Member
Join Date: May 2004
Location: johnstown, NY
Posts: 2,393
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Re: Two piece driveline to one piece?
Quote:
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#9 |
Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: Two piece driveline to one piece?
CPP has a nice one on their site, but I don't know of anyone that's running it.
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#10 |
Registered User
Join Date: Jul 2007
Location: Covina Calif
Posts: 172
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Re: Two piece driveline to one piece?
Inland empire driveshafts in ontareo CA has a solid billet aluminum one. And it comes with a hefty price of $111
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"Your trucks fast! You must have been going 120 when I passed you." "Owning A 10 Sec Import Is Like Coming Out Of The Closet, In The End Ur Still Gay" If for some reason i loose to a import...At least i can go home knowing the vehicle i drive drops girls panties... |
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#11 |
Senior Member
Join Date: May 2004
Location: johnstown, NY
Posts: 2,393
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Re: Two piece driveline to one piece?
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#12 |
Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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Re: Two piece driveline to one piece?
I'm running a 2 piece on my race truck.
850HP and it sees 7200rpm through the traps. I had a 1 piece but there was signs of it "whipping" pretty good. The one piece was very heavy and expensive. It used 4" DOM tubing. The 2 piece is not a stock set up and was not cheap(500 bucks) but I have warm fuzzy's with it.
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#13 | |
Registered User
Join Date: Jun 2004
Location: Saskatchewan, Canada
Posts: 1,368
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Re: Two piece driveline to one piece?
Quote:
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#14 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Two piece driveline to one piece?
I have seen a stock 2 piece doing very high 12's in the 1/4 in a LWB 1/2 ton... also his daily driver/ONLY vehicle
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#15 |
Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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Re: Two piece driveline to one piece?
I ran a stock 2 piece into the 11's with no problems....but since im running low 9's now it's a little past "Stock" anything...lol
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It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA |
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#16 |
Registered User
Join Date: Dec 2003
Location: here
Posts: 5,789
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Re: Two piece driveline to one piece?
Im running the stock shaft with a 6" rear drop & havent had any problems.
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#17 |
Registered User
Join Date: Jul 2007
Location: Covina Calif
Posts: 172
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Re: Two piece driveline to one piece?
I just installed my 2 piece shaft in my 70 swb. I kept having a problem with the center bearing braking so i took it to the local driveshaft shop and the guy installed a slip shaft and a new yoke and all new ujoints for $175.00. I have about 2in of suspention on my truck and when i would hit a bump it would shove the shaft forward into the trans and bottem out and it would bend in the middle and brake the bearing now it wont brake anything.
just let me know if anyone wants pics
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"Your trucks fast! You must have been going 120 when I passed you." "Owning A 10 Sec Import Is Like Coming Out Of The Closet, In The End Ur Still Gay" If for some reason i loose to a import...At least i can go home knowing the vehicle i drive drops girls panties... |
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#18 |
Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: Two piece driveline to one piece?
I ran a 2 piece for a few years and one day I found a stock 1 piece in my muffler guy's junk pile that was about 68" or so long. I had it cut down to the right length for my SWB and swapped the yoke for about $130. To have one made was going to be around $500, so I guess you could say I got really lucky.
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- 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 |
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#19 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Two piece driveline to one piece?
exactly.
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#20 |
Classic Chevy Recycler
Join Date: Dec 2007
Location: Alabama
Posts: 422
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Re: Two piece driveline to one piece?
I took the two piece out of my 78 long bed and got a one piece out of an 86 long bed at the junk yard and cured all my problems. I think it was less than $15.00. Had to cut the bracket for the hanger bearing off.
If the cross member will allow it I'll do it on my 67.
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#21 |
Registered User
![]() Join Date: Aug 2005
Location: Hillsboro Oregon
Posts: 6,449
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Re: Two piece driveline to one piece?
Another benny of a 2-piece is that the pinion angle doesn't change as much as the rear suspension moves up/down (assuming trailing arms). That's because the carrier bearing is at basically the same place fwd/aft as the trailing arm bushings.
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#22 |
WTB this ad
Join Date: Sep 2004
Location: Lafayette Georgia
Posts: 5,074
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Re: Two piece driveline to one piece?
I went from a two piece to a one piece when i lowered my swb. I used the ECE extreme drop xmember that wasn't designed to be used with a two piece shaft. Otherwise I would probably still have a two piece. In an airbag situation would a two piece be more practical? Just curious .......mumbling to myself........
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#23 |
Registered User
![]() Join Date: Aug 2005
Location: Hillsboro Oregon
Posts: 6,449
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Re: Two piece driveline to one piece?
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#24 |
WTB this ad
Join Date: Sep 2004
Location: Lafayette Georgia
Posts: 5,074
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Re: Two piece driveline to one piece?
I had seen where when using the porterbuilt, guys were tunneling the back of the cab floor. If a 2 piece shaft was used do you think you could use a stock floor with a high hump?
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#25 |
Senior Member
Join Date: May 2004
Location: johnstown, NY
Posts: 2,393
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Re: Two piece driveline to one piece?
you can lay frame with a two piece without cutting the cab floor, all with proper pinion angles.
Last edited by jlaird; 01-17-2008 at 04:33 PM. |
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