Gene's shorty 4x4 conversion - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

my67chevytruck · 10-30-2009, 03:28 PM

looking good.

**71blksuper4x4** · 10-30-2009, 04:06 PM

Gene, I am not sure on this, can you run an automatic front end with a np205??? I wasn't for sure on that. Trevor

Gene · 10-30-2009, 04:21 PM

I am not sure either, is the 205 any different than the 208? I think the only difference is that the hubs lock automatically when the transfer case is engaged and they unlock when you reverse a few feet. Anyone know if I will have a problem?

Got this information from Off-road.com:

NP205

The NP205 is a gear driven part time transfer case. It can be operated in either two or four wheel drive. The overall length of the NP205 case is 12"-13" from the face of the case to the rear output yoke's center on fixed yoke models. The shift positions of the NP203 are as follows from the most forward position (towards the engine) to the rear most position: Four Wheel Drive Low Range, Neutral, Two Wheel Drive High Range, Four Wheel Drive High Range When in Two Wheel Drive, the NP205 does not turn the front driveshaft.

The NP205 has a high range of 1.00:1 and a low range of 1.96:1 The front axle uses either manual or automatic locking hubs in combination with the NP205. Unlocking the hubs in two wheel drive save wear on the front axle shafts. The speedometer cable connects to the NP205 in the general are of the top center of the rear of the case. The NP205 has fill hole for lubrication in the rear face of the case under the rear output shaft. The drain plug for the NP205 is on the rear face of the case on the lowest part of the case.

The NP205 uses 80w-90 gear oil for lubrication The NP205 has a three bolt cover over the idler shaft. This is one of the identifiable traits of the NP205. The shift linkage of the NP205 Is not adjustable. It operates on a simple lever with few parts. The NP205 case is one piece of cast iron. All of the working parts are in this single housing. The identification tag of the NP205 is located above the front driveshaft output The NP205 was available from 1973 to 1991.

My differentials are from a 1991 suburban

NP208

The NP208 is a chain driven part time transfer case. It can be operated in either two or four wheel drive. The overall length of the NP208 case is 12"-13" from the face of the case to the rear output yoke's center on fixed yoke models.

The shift positions of the NP208 are as follows from the most forward position (towards the engine) to the rear most position: Two Wheel Drive High Range, Four Wheel Drive High Range, Neutral, Four Wheel Drive Low Range The NP208 shift pattern is not straight forward, it has to be pulled to the side and back to enter four wheel drive low range mode.

When in Two Wheel Drive, the NP208 does not turn the front driveshaft. The NP208 has a high range of 1.00:1 and a low range of 2.61:1 The front axle uses either manual or automatic locking hubs in combination with the NP208.

Unlocking the hubs in two wheel drive save wear on the front axle shafts. The NP208 uses automatic transmission fluid for lubrication The shift linkage of the NP208 is adjustable. Most manuals for appropriate year trucks will have instructions on how to adjust it properly. The NP205 case uses an aluminum case The identification tag of the NP20 8 is located on the rear face of the case The NP208 was available from 1981 to 1987.

Gene · 11-06-2009, 06:49 PM

Few more pics after I got it on the ground, I wasnt sure i'd like the BFG's as much as the Goodyear MTR but they sure have grown on me.

sdailey · 11-06-2009, 06:58 PM

Gene those BFG's look good. The frame looks good too. Keep up the good work.

Gene · 11-06-2009, 07:09 PM

Thanks, could'nt have even thought about getting this far without the help of this board and it's members.

sdailey · 11-06-2009, 08:32 PM

Any particular reason you chose those KTM's over the MTR's?

msgross · 11-06-2009, 08:48 PM

You could always install lockouts on the front axle. I don't think it will matter but you might get .5mpg better with them unlocked. Then the front driveshaft won't turn while in 2WD and slowly wear on more parts at the same time.

looks nice, I like those tires.

Gene · 11-06-2009, 09:05 PM

Quote:

Originally Posted by sdailey

Any particular reason you chose those KTM's over the MTR's?

Availability, every place locally and even on the net are on national backorder. I actually planned on running them in the beginning anyways until I saw I think your truck with the goodyears. But oh well, I like the BFG's pretty well.

Gene · 11-06-2009, 09:08 PM

Quote:

Originally Posted by msgross

You could always install lockouts on the front axle. I don't think it will matter but you might get .5mpg better with them unlocked. Then the front driveshaft won't turn while in 2WD and slowly wear on more parts at the same time.

looks nice, I like those tires.

Not sure if I understand what youre saying? Are you saying that the auto hubs make the driveshaft turn in 2wd? Because the only time they engage is when I hand turn the input. When I was pushing the truck out they freewheeled?

1985-GMC · 11-06-2009, 10:16 PM

It's looking great

your half way there. Keep up the good work!!!

Gene · 11-08-2009, 02:42 PM

Installed my drivetrain this weekend with the help of dad, as you can see in these shots, I am working with limited tools and space. My wife will be happy when i'm done so she can have our 2 car garage back(still havent figured out where i'm going to park this thing when its done because it sure wont fit in the garage!)

I put my old motor back in because it only had around 25000 miles, but the transmission had do be rebuilt because I had the shaft replace because it came out of my 2wd truck, and I had my guy go through the transfer case also.

msgross · 11-08-2009, 03:10 PM

great reason for a new garage then!

**71blksuper4x4** · 11-08-2009, 10:12 PM

Gene, looking sharp bud. Won't be long before the the fun stuff. By the way, your tow hooks are backwards. Trevor

sdailey · 11-08-2009, 10:34 PM

Great progress Gene.

**nbrfd007** · 11-08-2009, 11:52 PM

Quote:

Originally Posted by Gene

Not sure if I understand what youre saying? Are you saying that the auto hubs make the driveshaft turn in 2wd? Because the only time they engage is when I hand turn the input. When I was pushing the truck out they freewheeled?

The automatic lockouts, as it says are automatic, you do not have to get out and lock them in. No problem on a NP 205. When you engage the transfercase, the automatic hubs have a spring in them, the torque compress's the spring and locks them in. They work fairly good, but have a tendency to disengage when you are playing hard. They work good on the family ride, but I would put regular lock outs if you 4-wheel much.

renegade6 · 11-09-2009, 10:31 AM

What brand are the valve covers that you have?

Gene · 11-09-2009, 06:34 PM

Quote:

Originally Posted by 71blksuper4x4

Gene, looking sharp bud. Won't be long before the the fun stuff. By the way, your tow hooks are backwards. Trevor

So the point goes towards the rear of the truck? I guess I should have known that as many pics I have seen of them installed duh!

Gene · 11-09-2009, 06:36 PM

Quote:

Originally Posted by renegade6

What brand are the valve covers that you have?

They are stock corvette valve covers that I painted chevy orange.

Gene · 11-09-2009, 06:38 PM

Quote:

Originally Posted by nbrfd007

The automatic lockouts, as it says are automatic, you do not have to get out and lock them in. No problem on a NP 205. When you engage the transfercase, the automatic hubs have a spring in them, the torque compress's the spring and locks them in. They work fairly good, but have a tendency to disengage when you are playing hard. They work good on the family ride, but I would put regular lock outs if you 4-wheel much.

While the truck won't be a trailer queen, about the only time I ever see myself using 4wd is in the snow. Call me lazy, but I had these hubs on an 87 blazer and I loved them!

**71blksuper4x4** · 11-09-2009, 08:42 PM

Actually, while you are at it Gene, switch sides of them. The hook points towards the rear of the truck and since you have 69-71 hooks, they point towards the inside or towards each other. So this means take the one of the left and put it on the right and vice versa. Trevor

Gene · 11-09-2009, 09:12 PM

I turned them around and the point touches the front of the spring hanger on the drivers side?

Gene · 02-15-2010, 04:38 PM

Great news! I finally found a great paint and body guy who is going to sandblast my cab and bed, and he's going to do a color change also all for 2500. Canm wait to get my truck to his shop and get started

**71blksuper4x4** · 02-15-2010, 04:44 PM

Quote:

Originally Posted by Gene

I turned them around and the point touches the front of the spring hanger on the drivers side?

Gene, I know the hook mounts with the opening towards the rear, but I may have given you bad information on the hooks pointing inward at each other. Trevor

jason65 · 02-17-2010, 08:48 AM

Trucks looking good Gene. I like those tires.

10-30-2009, 03:28 PM	#26
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: Gene's shorty 4x4 conversion looking good. __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470

10-30-2009, 04:06 PM	#27
71blksuper4x4 SWB 4x4 Collector Join Date: Jun 2001 Location: Osage City, KS Posts: 5,148	Re: Gene's shorty 4x4 conversion Gene, I am not sure on this, can you run an automatic front end with a np205??? I wasn't for sure on that. Trevor __________________ TREVOR 1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks) 1972 Jimmy (soon to be Hickey cloned) 1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track) 1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank 1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT) http://67-72chevytrucks.com/vboard/s...d.php?t=624819 1989 V3500 Crew Cab (454tbi, NV4500, np205) 1970 Chevelle SS (LS5 454,th400,8track,buckets,tach) :2004 Jeep Wrangler Rubicon (daily driver) WTB: 1968-70 Cruise Control Lever

10-30-2009, 04:21 PM	#28
Gene Registered User Join Date: Aug 2002 Location: Muskogee, Oklahoma Posts: 2,914	Re: Gene's shorty 4x4 conversion I am not sure either, is the 205 any different than the 208? I think the only difference is that the hubs lock automatically when the transfer case is engaged and they unlock when you reverse a few feet. Anyone know if I will have a problem? Got this information from Off-road.com: NP205 The NP205 is a gear driven part time transfer case. It can be operated in either two or four wheel drive. The overall length of the NP205 case is 12"-13" from the face of the case to the rear output yoke's center on fixed yoke models. The shift positions of the NP203 are as follows from the most forward position (towards the engine) to the rear most position: Four Wheel Drive Low Range, Neutral, Two Wheel Drive High Range, Four Wheel Drive High Range When in Two Wheel Drive, the NP205 does not turn the front driveshaft. The NP205 has a high range of 1.00:1 and a low range of 1.96:1 The front axle uses either manual or automatic locking hubs in combination with the NP205. Unlocking the hubs in two wheel drive save wear on the front axle shafts. The speedometer cable connects to the NP205 in the general are of the top center of the rear of the case. The NP205 has fill hole for lubrication in the rear face of the case under the rear output shaft. The drain plug for the NP205 is on the rear face of the case on the lowest part of the case. The NP205 uses 80w-90 gear oil for lubrication The NP205 has a three bolt cover over the idler shaft. This is one of the identifiable traits of the NP205. The shift linkage of the NP205 Is not adjustable. It operates on a simple lever with few parts. The NP205 case is one piece of cast iron. All of the working parts are in this single housing. The identification tag of the NP205 is located above the front driveshaft output The NP205 was available from 1973 to 1991. My differentials are from a 1991 suburban NP208 The NP208 is a chain driven part time transfer case. It can be operated in either two or four wheel drive. The overall length of the NP208 case is 12"-13" from the face of the case to the rear output yoke's center on fixed yoke models. The shift positions of the NP208 are as follows from the most forward position (towards the engine) to the rear most position: Two Wheel Drive High Range, Four Wheel Drive High Range, Neutral, Four Wheel Drive Low Range The NP208 shift pattern is not straight forward, it has to be pulled to the side and back to enter four wheel drive low range mode. When in Two Wheel Drive, the NP208 does not turn the front driveshaft. The NP208 has a high range of 1.00:1 and a low range of 2.61:1 The front axle uses either manual or automatic locking hubs in combination with the NP208. Unlocking the hubs in two wheel drive save wear on the front axle shafts. The NP208 uses automatic transmission fluid for lubrication The shift linkage of the NP208 is adjustable. Most manuals for appropriate year trucks will have instructions on how to adjust it properly. The NP205 case uses an aluminum case The identification tag of the NP20 8 is located on the rear face of the case The NP208 was available from 1981 to 1987. Last edited by Gene; 10-30-2009 at 04:33 PM. Reason: information

11-06-2009, 06:49 PM	#29
Gene Registered User Join Date: Aug 2002 Location: Muskogee, Oklahoma Posts: 2,914	Re: Gene's shorty 4x4 conversion Few more pics after I got it on the ground, I wasnt sure i'd like the BFG's as much as the Goodyear MTR but they sure have grown on me. Attached Images

11-06-2009, 06:58 PM	#30
sdailey The Few, The Proud Join Date: Jun 2007 Location: Ball Ground, Georgia Posts: 1,830	Re: Gene's shorty 4x4 conversion Gene those BFG's look good. The frame looks good too. Keep up the good work. __________________ Shannon

11-06-2009, 07:09 PM	#31
Gene Registered User Join Date: Aug 2002 Location: Muskogee, Oklahoma Posts: 2,914	Re: Gene's shorty 4x4 conversion Thanks, could'nt have even thought about getting this far without the help of this board and it's members.

11-06-2009, 08:32 PM	#32
sdailey The Few, The Proud Join Date: Jun 2007 Location: Ball Ground, Georgia Posts: 1,830	Re: Gene's shorty 4x4 conversion Any particular reason you chose those KTM's over the MTR's? __________________ Shannon

11-06-2009, 08:48 PM	#33
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Gene's shorty 4x4 conversion You could always install lockouts on the front axle. I don't think it will matter but you might get .5mpg better with them unlocked. Then the front driveshaft won't turn while in 2WD and slowly wear on more parts at the same time. looks nice, I like those tires. __________________ 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" Last edited by msgross; 11-06-2009 at 08:49 PM.

11-06-2009, 10:16 PM	#36
1985-GMC Chevy Enthusiast Join Date: Jul 2009 Location: Canyon Lake Texas Posts: 2,024	Re: Gene's shorty 4x4 conversion It's looking great your half way there. Keep up the good work!!! __________________ Tony 1985 GMC K2500 restoration Project: Rust, White & Blue 1989 Chevy R3500 CC Cummins & 4X4 swap some day... 1989 Burb (D60, 14BFF, 12V, NV4500, NP205, 37" tires in progress) Last edited by 1985-GMC; 11-06-2009 at 10:16 PM.

11-08-2009, 02:42 PM	#37
Gene Registered User Join Date: Aug 2002 Location: Muskogee, Oklahoma Posts: 2,914	Re: Gene's shorty 4x4 conversion Installed my drivetrain this weekend with the help of dad, as you can see in these shots, I am working with limited tools and space. My wife will be happy when i'm done so she can have our 2 car garage back(still havent figured out where i'm going to park this thing when its done because it sure wont fit in the garage!) I put my old motor back in because it only had around 25000 miles, but the transmission had do be rebuilt because I had the shaft replace because it came out of my 2wd truck, and I had my guy go through the transfer case also. Attached Images

11-08-2009, 03:10 PM	#38
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Gene's shorty 4x4 conversion great reason for a new garage then! __________________ 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"

11-08-2009, 10:12 PM	#39
71blksuper4x4 SWB 4x4 Collector Join Date: Jun 2001 Location: Osage City, KS Posts: 5,148	Re: Gene's shorty 4x4 conversion Gene, looking sharp bud. Won't be long before the the fun stuff. By the way, your tow hooks are backwards. Trevor __________________ TREVOR 1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks) 1972 Jimmy (soon to be Hickey cloned) 1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track) 1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank 1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT) http://67-72chevytrucks.com/vboard/s...d.php?t=624819 1989 V3500 Crew Cab (454tbi, NV4500, np205) 1970 Chevelle SS (LS5 454,th400,8track,buckets,tach) :2004 Jeep Wrangler Rubicon (daily driver) WTB: 1968-70 Cruise Control Lever

11-08-2009, 10:34 PM	#40
sdailey The Few, The Proud Join Date: Jun 2007 Location: Ball Ground, Georgia Posts: 1,830	Re: Gene's shorty 4x4 conversion Great progress Gene. __________________ Shannon

11-09-2009, 10:31 AM	#42
renegade6 Registered User Join Date: Nov 2008 Location: Texarkana, TX Posts: 443	Re: Gene's shorty 4x4 conversion What brand are the valve covers that you have? __________________ Brandon 63 Biscayne https://www.pro-touring.com/threads/90718-63-Biscayne 57 Chevy Truck (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=321380 72 K20 Long bed stepside (wife's) 72 K20 Long bed 396 (flip or keep...?) The latest build: http://67-72chevytrucks.com/vboard/s...76#post8438476

11-09-2009, 08:42 PM	#46
71blksuper4x4 SWB 4x4 Collector Join Date: Jun 2001 Location: Osage City, KS Posts: 5,148	Re: Gene's shorty 4x4 conversion Actually, while you are at it Gene, switch sides of them. The hook points towards the rear of the truck and since you have 69-71 hooks, they point towards the inside or towards each other. So this means take the one of the left and put it on the right and vice versa. Trevor __________________ TREVOR 1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks) 1972 Jimmy (soon to be Hickey cloned) 1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track) 1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank 1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT) http://67-72chevytrucks.com/vboard/s...d.php?t=624819 1989 V3500 Crew Cab (454tbi, NV4500, np205) 1970 Chevelle SS (LS5 454,th400,8track,buckets,tach) :2004 Jeep Wrangler Rubicon (daily driver) WTB: 1968-70 Cruise Control Lever



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11-09-2009, 09:12 PM	#47
Gene Registered User Join Date: Aug 2002 Location: Muskogee, Oklahoma Posts: 2,914	Re: Gene's shorty 4x4 conversion I turned them around and the point touches the front of the spring hanger on the drivers side?

02-15-2010, 04:38 PM	#48
Gene Registered User Join Date: Aug 2002 Location: Muskogee, Oklahoma Posts: 2,914	Re: Gene's shorty 4x4 conversion Great news! I finally found a great paint and body guy who is going to sandblast my cab and bed, and he's going to do a color change also all for 2500. Canm wait to get my truck to his shop and get started

02-17-2010, 08:48 AM	#50
jason65 Registerd User Join Date: Sep 2008 Location: Oklahoma Posts: 2,118	Re: Gene's shorty 4x4 conversion Trucks looking good Gene. I like those tires.

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