driveshaft mesurement needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**MJN** · 03-21-2010, 08:18 PM

I'm in the process of swapping out my 203 transfer case for a 205 and I need to know how long the rear driveshaft needs to be because I might need to have one made. I don't have the 203 out of the truck yet so I can't get a good measurement. My truck specs;
3/4ton 350, SM465/205, 14 bolt ff rear axle and 6 inches of lift.
I know a stock driveshaft from a stock K-20 truck with the 465/205 and 14bolt rear will work but they're getting hard to find, almost impossible. I need the measurement from the flat edge (where the u-joint u-bolts go through) of the transfercase yoke to the flat edge of the pinion yoke at ride height.

This diagram explains it better than I can.
http://www.driveshaftspecialist.com/...kes%202009.JPG

Anyone reccommend a driveshaft builder?

**Yukon Jack** · 03-21-2010, 11:32 PM

I'd really suggest you wait to measure when you have the transfer case installed. Your six inch lift might be a bit different than the next guy's six inch lift.

If you do want someone to give you this info, you need to list the year of your truck you asking about along with wheelbase (I assume it is a regular cab) so you're better comparing apples to apples.

**MJN** · 03-22-2010, 07:49 AM

That's probably the route I'll end up going. If it helps at all, it's a Superlift with blocks in the rear.

LONGHAIR · 03-22-2010, 07:26 PM

I'm with Yukon Jack on this one. Save yourself the headache, measure yours after it is in place.

84 400 · 03-24-2010, 02:15 AM

I tried to get this info a while back and had no luck. Just put it in and measure center of u joint cap to center of u joint cap. As for making the shaft I would search the net for a local place or talk to some truck guys local. Most places do this type of stuff for bigger trucks. You will need to get you original re tubed as i did. mine cost around 150 with new spicer u joints re tubed and balanced and they did a real good job.

**MJN** · 03-27-2010, 08:15 PM

I found one that will be long enough...just by chance. I have found a couple places online that will build a new driveshaft completely new for you, just needed the measurements. Otherwise my next option was to have the one I have retubed. Thanks guys

03-21-2010, 08:18 PM	#1
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 3,071	driveshaft mesurement needed I'm in the process of swapping out my 203 transfer case for a 205 and I need to know how long the rear driveshaft needs to be because I might need to have one made. I don't have the 203 out of the truck yet so I can't get a good measurement. My truck specs; 3/4ton 350, SM465/205, 14 bolt ff rear axle and 6 inches of lift. I know a stock driveshaft from a stock K-20 truck with the 465/205 and 14bolt rear will work but they're getting hard to find, almost impossible. I need the measurement from the flat edge (where the u-joint u-bolts go through) of the transfercase yoke to the flat edge of the pinion yoke at ride height. This diagram explains it better than I can. http://www.driveshaftspecialist.com/...kes%202009.JPG Anyone reccommend a driveshaft builder? __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com Last edited by MJN; 03-21-2010 at 08:27 PM.

03-21-2010, 11:32 PM	#2
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Re: driveshaft mesurement needed I'd really suggest you wait to measure when you have the transfer case installed. Your six inch lift might be a bit different than the next guy's six inch lift. If you do want someone to give you this info, you need to list the year of your truck you asking about along with wheelbase (I assume it is a regular cab) so you're better comparing apples to apples. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

03-22-2010, 07:49 AM	#3
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 3,071	Re: driveshaft mesurement needed That's probably the route I'll end up going. If it helps at all, it's a Superlift with blocks in the rear. __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com

03-24-2010, 02:15 AM	#5
84 400 Sb 400 club Join Date: Nov 2005 Location: NH / MA Posts: 2,746	Re: driveshaft mesurement needed I tried to get this info a while back and had no luck. Just put it in and measure center of u joint cap to center of u joint cap. As for making the shaft I would search the net for a local place or talk to some truck guys local. Most places do this type of stuff for bigger trucks. You will need to get you original re tubed as i did. mine cost around 150 with new spicer u joints re tubed and balanced and they did a real good job. __________________ 1984 chevy c10, built 400sb,.(SOLD) 77 K10 Project / daily driver "The Grinch" http://67-72chevytrucks.com/vboard/s...d.php?t=318363 1956 Willys Wagon (327 chevy) Project (Now Buick 225) 1980 Corvette L-48 4 speed 1992 Mustang GT built 5.0 5 speed 1985 C10 LWB Sold 1982 K10 SWB plow truck Parted out 1986 D30 M1028 fire brush truck Parted out

03-27-2010, 08:15 PM	#6
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 3,071	Re: driveshaft mesurement needed I found one that will be long enough...just by chance. I have found a couple places online that will build a new driveshaft completely new for you, just needed the measurements. Otherwise my next option was to have the one I have retubed. Thanks guys __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com



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