Really need help, what size driveshaft will fit?

bowtieboy42 · 10-05-2008, 12:58 AM

Well I just got back from a LONG night wheeling. Long story short, I can't put the truck in park, and my drive shaft split into two pieces. Long story short, I was stuck for awhile and must have had a rock under my rear driveshaft. Anyway, wheeling later, it split in half, perfect cut in it. And oh yeah, on monday I need to drive 2.5 hours back to college.

So my question is, what size driveshaft will fit my truck? Its a 98 k1500 ECSB. I found a drive shaft out of a Rclb and a burban, but I don't know if these will fit?

Help!

88GMCtruck · 10-05-2008, 01:37 AM

Sorry, the only driveshaft that will fit is one from another extended cab short box. Extended-cab, 6.5-foot bed models had a 141.5-inch wheelbase.

RCLB trucks and suburbans both had a 131.5-inch wheelbase.

bowtieboy42 · 10-05-2008, 08:51 AM

This sucks. I found one from a burban, tahoe, rclb, and rcsb. I guess I'm heading out to a junkyard

bowtieboy42 · 10-05-2008, 11:23 AM

No luck at the junk yards. I have no idea what I'm going to do

NEUMANNZZ · 10-05-2008, 01:46 PM

maybe get one at a driveline shop or buy a new one.

kcb37 · 10-05-2008, 01:51 PM

If it split relatively clean see if you can get it welded, to get you home.
They may even be able to take out a section an do two welds.
Just need to find a shop that will do it.
But a lot of engine tranny swaps have two drive shafts or a shortened shaft. They just get cut and welded together.

bowtieboy42 · 10-05-2008, 02:03 PM

Will a drive shaft from a 2000 ecsb fit my obs?

bowtieboy42 · 10-05-2008, 03:43 PM

ttt! I found one of a 2000 ecsb and need to know if it will fit.

NEUMANNZZ · 10-05-2008, 04:19 PM

your gonna have to measure it to found out(result might be faster) unless somebody has actually swapped one.

bowtieboy42 · 10-05-2008, 04:34 PM

I'm waiting to hear back from the guy with the measurments. Until then I need to know whether I should keep searching junkyards and stuff or if it will work.

88GMCtruck · 10-05-2008, 04:53 PM

I know that an OBS RCSB driveshaft is 2" shorter than a NBS RCSB, I'm running one in my 88 after I lifted it.

I researched again.

The driveshaft in your truck should be 60.5" weld to weld, NBS rear driveshafts are 63.5" weld to weld. This won't work unless your truck has well over 8" of lift in the rear.

Your wheelbase as stated is 141.5" and a NBS is 143.5". Sorry you are going to have to find one for your truck or get it reparied.

bowtieboy42 · 10-05-2008, 05:41 PM

Damn. thanks a lot for the help man. I'm going to be up all night doing homework for college, then tomorrow morning I get to go to court, come home, fix my truck, and get my ass back to school for midterms tuesday. yay!

Thanks though, I appreciate all the info.

88GMCtruck · 10-05-2008, 05:53 PM

Sounds like you have alot on your plate. No problem, hope you get it back home.

10-05-2008, 12:58 AM	#1
bowtieboy42 Registered User Status: Offline Join Date: Jan 2007 Member ID: 62702 Pics: My Gallery Location: philly Posts: 355	Really need help, what size driveshaft will fit? Well I just got back from a LONG night wheeling. Long story short, I can't put the truck in park, and my drive shaft split into two pieces. Long story short, I was stuck for awhile and must have had a rock under my rear driveshaft. Anyway, wheeling later, it split in half, perfect cut in it. And oh yeah, on monday I need to drive 2.5 hours back to college. So my question is, what size driveshaft will fit my truck? Its a 98 k1500 ECSB. I found a drive shaft out of a Rclb and a burban, but I don't know if these will fit? Help! 98 k1500 3" blocks, AAL, Cranked, K&N drop in, hi flow cats, 305/70/16 BFG MT

10-05-2008, 01:37 AM	#2
88GMCtruck 02GMCtruck Status: Offline Join Date: Mar 2004 Member ID: 13211 Pics: My Gallery Location: Washington Age: 22 Posts: 403	Re: Really need help, what size driveshaft will fit? Sorry, the only driveshaft that will fit is one from another extended cab short box. Extended-cab, 6.5-foot bed models had a 141.5-inch wheelbase. RCLB trucks and suburbans both had a 131.5-inch wheelbase. 88 GMC K1500, RCSS/5.7L/700R4/NP241/D44/14SF G80, 168k. 9" SAS, D44 on 35's 02 GMC K1500, RCSS/4.8L/4L60E/NP261/IFS/10, 16k. Sierra HT package: 1 of 234 Trucks.

10-05-2008, 08:51 AM	#3
bowtieboy42 Registered User Status: Offline Join Date: Jan 2007 Member ID: 62702 Pics: My Gallery Location: philly Posts: 355	Re: Really need help, what size driveshaft will fit? This sucks. I found one from a burban, tahoe, rclb, and rcsb. I guess I'm heading out to a junkyard 98 k1500 3" blocks, AAL, Cranked, K&N drop in, hi flow cats, 305/70/16 BFG MT

10-05-2008, 11:23 AM	#4
bowtieboy42 Registered User Status: Offline Join Date: Jan 2007 Member ID: 62702 Pics: My Gallery Location: philly Posts: 355	Re: Really need help, what size driveshaft will fit? No luck at the junk yards. I have no idea what I'm going to do 98 k1500 3" blocks, AAL, Cranked, K&N drop in, hi flow cats, 305/70/16 BFG MT

10-05-2008, 01:46 PM	#5
NEUMANNZZ Premium Member #30 GMC RULZZ Status: Offline Join Date: Mar 2005 Member ID: 25597 Pics: My Gallery Location: San Diego Age: 41 Posts: 6,461	Re: Really need help, what size driveshaft will fit? maybe get one at a driveline shop or buy a new one. O2 GMC RCSB 4.8L V8 AUTO 3.73's rebuilt/beefed up 4L60E(at 43,000miles) TRAIN HORNS(see pics in my gallery) Last edited by NEUMANNZZ : 10-05-2008 at 01:47 PM.


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10-05-2008, 01:51 PM	#6
kcb37 Registered User Status: Offline Join Date: Oct 2007 Member ID: 75767 Pics: My Gallery Location: Iowa Age: 25 Posts: 2,474	Re: Really need help, what size driveshaft will fit? If it split relatively clean see if you can get it welded, to get you home. They may even be able to take out a section an do two welds. Just need to find a shop that will do it. But a lot of engine tranny swaps have two drive shafts or a shortened shaft. They just get cut and welded together. 96 Silverado ECSB, 350, 4L60E, 3.42 G80 89 Camaro, 5 speed, 3.08 LS 49 F-1, flathead 6, 4 speed, 2wd, unknown rear end. Old rust bucket.

10-05-2008, 02:03 PM	#7
bowtieboy42 Registered User Status: Offline Join Date: Jan 2007 Member ID: 62702 Pics: My Gallery Location: philly Posts: 355	Re: Really need help, what size driveshaft will fit? Will a drive shaft from a 2000 ecsb fit my obs? 98 k1500 3" blocks, AAL, Cranked, K&N drop in, hi flow cats, 305/70/16 BFG MT Last edited by bowtieboy42 : 10-05-2008 at 02:30 PM.

10-05-2008, 03:43 PM	#8
bowtieboy42 Registered User Status: Offline Join Date: Jan 2007 Member ID: 62702 Pics: My Gallery Location: philly Posts: 355	Re: Really need help, what size driveshaft will fit? ttt! I found one of a 2000 ecsb and need to know if it will fit. 98 k1500 3" blocks, AAL, Cranked, K&N drop in, hi flow cats, 305/70/16 BFG MT

10-05-2008, 04:19 PM	#9
NEUMANNZZ Premium Member #30 GMC RULZZ Status: Offline Join Date: Mar 2005 Member ID: 25597 Pics: My Gallery Location: San Diego Age: 41 Posts: 6,461	Re: Really need help, what size driveshaft will fit? your gonna have to measure it to found out(result might be faster) unless somebody has actually swapped one. O2 GMC RCSB 4.8L V8 AUTO 3.73's rebuilt/beefed up 4L60E(at 43,000miles) TRAIN HORNS(see pics in my gallery)

10-05-2008, 04:34 PM	#10
bowtieboy42 Registered User Status: Offline Join Date: Jan 2007 Member ID: 62702 Pics: My Gallery Location: philly Posts: 355	Re: Really need help, what size driveshaft will fit? I'm waiting to hear back from the guy with the measurments. Until then I need to know whether I should keep searching junkyards and stuff or if it will work. 98 k1500 3" blocks, AAL, Cranked, K&N drop in, hi flow cats, 305/70/16 BFG MT

10-05-2008, 04:53 PM	#11
88GMCtruck 02GMCtruck Status: Offline Join Date: Mar 2004 Member ID: 13211 Pics: My Gallery Location: Washington Age: 22 Posts: 403	Re: Really need help, what size driveshaft will fit? I know that an OBS RCSB driveshaft is 2" shorter than a NBS RCSB, I'm running one in my 88 after I lifted it. I researched again. The driveshaft in your truck should be 60.5" weld to weld, NBS rear driveshafts are 63.5" weld to weld. This won't work unless your truck has well over 8" of lift in the rear. Your wheelbase as stated is 141.5" and a NBS is 143.5". Sorry you are going to have to find one for your truck or get it reparied. 88 GMC K1500, RCSS/5.7L/700R4/NP241/D44/14SF G80, 168k. 9" SAS, D44 on 35's 02 GMC K1500, RCSS/4.8L/4L60E/NP261/IFS/10, 16k. Sierra HT package: 1 of 234 Trucks.

10-05-2008, 05:41 PM	#12
bowtieboy42 Registered User Status: Offline Join Date: Jan 2007 Member ID: 62702 Pics: My Gallery Location: philly Posts: 355	Re: Really need help, what size driveshaft will fit? Damn. thanks a lot for the help man. I'm going to be up all night doing homework for college, then tomorrow morning I get to go to court, come home, fix my truck, and get my ass back to school for midterms tuesday. yay! Thanks though, I appreciate all the info. 98 k1500 3" blocks, AAL, Cranked, K&N drop in, hi flow cats, 305/70/16 BFG MT

10-05-2008, 05:53 PM	#13
88GMCtruck 02GMCtruck Status: Offline Join Date: Mar 2004 Member ID: 13211 Pics: My Gallery Location: Washington Age: 22 Posts: 403	Re: Really need help, what size driveshaft will fit? Sounds like you have alot on your plate. No problem, hope you get it back home. 88 GMC K1500, RCSS/5.7L/700R4/NP241/D44/14SF G80, 168k. 9" SAS, D44 on 35's 02 GMC K1500, RCSS/4.8L/4L60E/NP261/IFS/10, 16k. Sierra HT package: 1 of 234 Trucks. Last edited by 88GMCtruck : 10-05-2008 at 06:00 PM.

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