Driveshaft time - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BR3W CITY · 04-25-2011, 12:51 PM

So I have NEVER done anything with a driveshaft in my automotive life. I can replace a u-joint fine, but have never measured for or really worked with a drive shaft.

The truck is my 66 short bed step side.
Old setup WAS 355 w/700r4 to 12 bolt
NEW setup IS lq4 w/4l80e to 12 bolt.

I thought I might be able to have the existing shaft modified to fit, but its actually too short, not too long. How do I know what ends I need, and how to measure for the shaft? I have read a few different instructions but it seems like the measurements I get, don't really make sense against what I'm reading.

Any help? Pics would be great.
Also, do I need to buy a seperate yoke for the trans? or does it come on the new shaft?

**Clyde65** · 04-25-2011, 01:08 PM

If you have a reputable driveline shop in your area, you can call them and tell them what trans you have, and measure from center of rear u-joint to the end of the tranny tailshaft, they will make you one and balance it

usmcchevy · 04-25-2011, 09:16 PM

I bookmarked this back in 07 when I started researching a LS swap.

http://www.automedia.com/Building_a_...es20040301ds/1

BR3W CITY · 04-26-2011, 04:41 PM

good info, strangely, the man measuring the shaft looking Amish.

**TR65** · 04-26-2011, 07:39 PM

This is the Dana-Spicer u-joint catalog. Look under conversion u-joint kits if you want to adapt a particular drive shaft to another transmission or differential.

http://www2.dana.com/pdf/K350-1-DSSP.pdf

It takes a little head scratchin but it is all in there.

TR

Big Port Jimmy 6 · 04-26-2011, 08:09 PM

http://www.dynotechengineering.com/

They have made a couple of shafts for me. Fast service and the will help you decide what you need for your application. Jay

67C10BUB · 04-27-2011, 05:40 AM

This is where I got mine done. I think it was around $250 for them to shorten it, install a new 27 spline slip shaft, and all new U-joints.http://www.iedls.com/Driveshafts/Mea...riveshafts.asp

04-25-2011, 12:51 PM	#1
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Driveshaft time So I have NEVER done anything with a driveshaft in my automotive life. I can replace a u-joint fine, but have never measured for or really worked with a drive shaft. The truck is my 66 short bed step side. Old setup WAS 355 w/700r4 to 12 bolt NEW setup IS lq4 w/4l80e to 12 bolt. I thought I might be able to have the existing shaft modified to fit, but its actually too short, not too long. How do I know what ends I need, and how to measure for the shaft? I have read a few different instructions but it seems like the measurements I get, don't really make sense against what I'm reading. Any help? Pics would be great. Also, do I need to buy a seperate yoke for the trans? or does it come on the new shaft? __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

04-25-2011, 01:08 PM	#2
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,539	Re: Driveshaft time If you have a reputable driveline shop in your area, you can call them and tell them what trans you have, and measure from center of rear u-joint to the end of the tranny tailshaft, they will make you one and balance it __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

04-25-2011, 09:16 PM	#3
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: Driveshaft time I bookmarked this back in 07 when I started researching a LS swap. http://www.automedia.com/Building_a_...es20040301ds/1 __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

04-26-2011, 04:41 PM	#4
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Driveshaft time good info, strangely, the man measuring the shaft looking Amish. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

04-26-2011, 07:39 PM	#5
TR65 Senior Member Join Date: Nov 2007 Location: Greenville, SC Posts: 873	Re: Driveshaft time This is the Dana-Spicer u-joint catalog. Look under conversion u-joint kits if you want to adapt a particular drive shaft to another transmission or differential. http://www2.dana.com/pdf/K350-1-DSSP.pdf It takes a little head scratchin but it is all in there. TR __________________ 1965 C10 SWB Fleet Two owner LS2 Swap Thread http://67-72chevytrucks.com/vboard/s...d.php?t=413880

04-26-2011, 08:09 PM	#6
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: Driveshaft time http://www.dynotechengineering.com/ They have made a couple of shafts for me. Fast service and the will help you decide what you need for your application. Jay __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.

04-27-2011, 05:40 AM	#7
67C10BUB Registered User Join Date: Aug 2010 Location: Alta Loma, CA Posts: 610	Re: Driveshaft time This is where I got mine done. I think it was around $250 for them to shorten it, install a new 27 spline slip shaft, and all new U-joints.http://www.iedls.com/Driveshafts/Mea...riveshafts.asp __________________ 67 5.3L Build



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