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12-17-2007, 06:38 PM
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#1 |
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Registered User
Join Date: Jan 2007
Location: Bellingham, washington
Posts: 260
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Almost walking !!
Well I decided that it was time to dump the old Rockwell T-case and install the ready to go 205 setup. After taking out the case I was shocked to see the out putshaft had twisted and broke. I don't know how it did'nt snap off and leave me walking. After I took the pics I looked at the input shaft and it was twisted and cracked also! I have messed with a lot of trannys and never seen one like this. LAst year I installed a stout well built 454 with front and rear lockers and have been having fun with it. I even took 4th place in a burnout contest with 23 cars. I was the only 4x4 in the bunch. The crowd loved it. I was expecting the coupler to let loose, but not the tranny shafts.
Anyone know if I can get stronger than stock shafts for the 465? Would going to an auto be better? I would rather keep the standard. I know an auto would help ease the hard shock on the drive line when I stomp on it. I also wonder if ya'll think new shafts would hold up OK considering the old shafts have been twisted on for almost 40 years. Any thoughts, Ideas? Thanks
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68 4x4, 454, 4 speed, disk brakes both ends, Sold my 69 SS396 Elcamino when young & stupid 
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12-17-2007, 06:42 PM
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#2 |
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Registered User
Join Date: Jan 2007
Location: Bellingham, washington
Posts: 260
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Re: Almost walking !!
I may not have made it clear, the twisted shafts are on the sm465 tranny not the t-case.
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68 4x4, 454, 4 speed, disk brakes both ends, Sold my 69 SS396 Elcamino when young & stupid
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12-17-2007, 07:00 PM
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#3 |
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Windy Corner of a Dirty Street
Join Date: Jun 2003
Location: Pueblo West, Colorado
Posts: 2,926
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Re: Almost walking !!
Damn. That is nuts. You are lucky
I would have thought the coupler would break before damaging the out put shaft too.
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Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles
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12-17-2007, 07:38 PM
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#4 |
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Bloo
Join Date: Feb 2001
Location: Barren County Kentucky
Posts: 6,283
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Re: Almost walking !!
what about changing it to the newer 32? spline shaft? like np208/sm465s come with. i think you can get input gears for a 205 t-case to match
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12-17-2007, 07:52 PM
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#5 |
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Registered User
Join Date: Jan 2007
Location: Bellingham, washington
Posts: 260
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Re: Almost walking !!
Well, I was wondering about a late model tranny. The smoth quiet shifting would be nice. Last summer when I put the T-case together, getting ready for the swap, I got the 205 465 adapter and seals. I also had to install the correct input shaft on the 205 for my 465 (I got the 205 from a 350 tranny). So I hate to start swapping everything around again. $$$.
One clue to all. Don't sell your old parts on E-BAY untill the project is done.
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68 4x4, 454, 4 speed, disk brakes both ends, Sold my 69 SS396 Elcamino when young & stupid
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12-17-2007, 08:13 PM
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#6 |
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Registered User
Join Date: Jan 2007
Location: San Jose
Posts: 847
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Re: Almost walking !!
your truck reallllllly likes you, that is unbelievable!
Last edited by PrerunnerRob; 12-17-2007 at 08:13 PM. |
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12-18-2007, 03:47 PM
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#7 |
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Everything is work in progress
 
Join Date: Apr 2006
Location: Denver Colorado
Posts: 326
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Re: Almost walking !!
That is twisted sister!!
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Good luck with your truck! How much?! It's just an old truck part!! 49 International on a 80 GMC 3/4ton 4x4 chassis 48 International KB-5 2 ton dump bed 04 Honda CRF "500" 09 Honda CRF450 fuel injected rocket 03 Suzuki hayabusa carbonfiber wheeled monster. 02 Ford diesel stretch van (toy hauler) 01 38' Monaco diesel pusher motorhome |
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12-18-2007, 06:27 PM
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#8 |
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K5Camper
 
Join Date: Mar 2004
Location: Pueblo, CO
Posts: 1,513
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Re: Almost walking !!
Wow. That's pretty impressive. I'm with Larry, I would have thought the coupler would have grenaded before twisting the output.
I'm sure it took a bunch of input torque from the engine and some good traction to twist that shaft. I'm thinking a high rpm clutch dump with little to no slippage at the tires. I'm not sure a nv4500 would hold up to that stress either.
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Rob Z. 1975 K5 350/465/205/D44/12b 4" lift on 35's- RIP 1991 K5 8.1L/NV4500/241/D44/14b FWC Camper |
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12-19-2007, 06:42 AM
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#9 |
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Registered User
Join Date: Jan 2007
Location: Mississippi
Posts: 2,122
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Re: Almost walking !!
That's a cool one to keep and hang on the shop wall!
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'72 C to K20 "Cannibalizer" http://67-72chevytrucks.com/vboard/s...32#post8653432 '85 K30 "Big Nassy" [B]'85 C10 [B] "Corpse" '01 2500 Suburban ...party wagon & tow truck '06 Silverado SS...DD '06 C1500 WT...DD '07 Classic C1500 WT...DD Built & sold cause can't keep 'em all: '72 Blazer "The Bucket" http://67-72chevytrucks.com/vboard/s...d.php?t=433190 '55 Chevy straight axle gasser https://www.trifive.com/forums/showthread.php?t=173938 '69 Pro Street Chevelle http://www.chevelles.com/forums/showthread.php?t=332541 '86 M1031 CUCV http://67-72chevytrucks.com/vboard/s...d.php?t=553619 |
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12-21-2007, 12:19 PM
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#10 |
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Post Whore
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,686
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Re: Almost walking !!
That is amazing!
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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12-21-2007, 02:47 PM
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#11 |
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Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
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Re: Almost walking !!
Thats absolutely crazy never seen it before. I would think a stoutly built sm465 should be able to handle all of that with no problems but not sure. That just don't make sense about what happened though.
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*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold  -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit   -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER  I would rather push a Chevy then drive a ford!!
 Last edited by Hoods69BadBowTie; 12-21-2007 at 02:48 PM. |
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12-22-2007, 01:18 PM
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#12 |
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Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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Re: Almost walking !!
Mine was messed up too, but not as good as yours.
THe 10 spline design is just crappy, there is no way around it. To go to the 32 spline setup you need the longer mainshaft, the hard to find 32 spline np205 adapter, and then a round pattern 205 with the long input gear.
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1969 GMC K2500  1996 Honda Accord 2007 Kawasaki KLR 650 |
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12-23-2007, 02:52 AM
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#13 |
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Registered User
Join Date: Apr 2000
Location: Chester County PA, USA
Posts: 1,228
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Re: Almost walking !!
A little carb cleaner......
A little 5 minute JB Weld..... Your good!
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72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania |
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12-23-2007, 05:49 AM
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#14 |
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Special Order
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
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Re: Almost walking !!
Ouch!!!
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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12-23-2007, 07:30 AM
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#15 |
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I do everything twice, so what
Join Date: Mar 2004
Location: To the Right. One may go as far to say WAY to the Right
Posts: 378
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Re: Almost walking !!
Go to www.profabmachineinc.com We have used their 465 three speed kits for pulling trucks. I'm sure they could set you up. You will not brake these shafts
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www.hilbillytruckpulling.com |
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01-05-2008, 04:26 PM
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#16 |
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Registered User
Join Date: Jun 2007
Location: Texas
Posts: 1
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Re: Almost walking !!
Well, brother I have looked at the photos and can not believe they did not snap off. Better hang them up on the wall of honor you should be starting. Your brother with the hot rod 74 Chevy.
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01-07-2008, 01:17 PM
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#17 | |
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Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Almost walking !!
Quote:
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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01-07-2008, 01:19 PM
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#18 | |
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Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Almost walking !!
Quote:
__________________
The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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01-08-2008, 05:37 AM
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#19 |
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Special Order
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
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Re: Almost walking !!
That spline defines "on it`s way".
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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