Np205 transfer case fluid

Nov 9, 2001 · 034. 5526 posts · Joined 1999. #5 · Nov 9, 2001. Make sure your seals between tranny and t-case are ok, and I'd use gear lube in the 205. Keep in mind the automatic tranny stuff is pressurized, while the t-case is not. That just means that if a seal does let loose, you get a little auto tranny fluid in the gear lube (won't really hurt ...

Fluid type option's for NP205 and T18? I ordered a seal kit for my NP205, And now I wonder what fluid to use? I believe my 79 should use 80-90 gear oil. I know some of the newer transfer cases including the 205 use ATF? also read 50w's? I would like to use the lightest fluid for MPGs possible with out doing harm to my transfer case.It's important to keep hydrated before, during, and after a workout, but if you're not satisfied with conventional "until you're not thirsty" wisdom, Men's Health explains how to c...March 30, 2023. A transfer case leaking transmission fluid is a serious problem. It can cause damage to the transmission and other components in your car. To fix this, you’ll need to identify where the leak is coming from, clean off any excess fluid, and replace any damaged parts or gaskets. You may also need to add additional fluid if needed.This 23x29 spline coupler is for Dodge trucks that use NP205 transfer cases with NV4500 or G360 transmissions. Order your NP205 23x29 spline coupler online today at TorqueKing.com. Menu. Search. Close Search. ... Dodge & Ram Transfer Case Fluid Type; Ford Full Size 4x4 Transfer Case Fluids; Warn Premium Hub Applications; Warn … Covers New Process NP205 Transfer Cases found in Chevrolet, Dodge, Ford, GMC, and International Harvester (IHC) 4x4 vehicles from 1969 to 1993. Roberts, MT 2006. 18 pages of technical content, 8½" x 11". Available in printed version only: Printed Hard Copy (TM2002P is 8-1/2"x11") Also See: TM2000 NP205 Transfer Case Service Manual Ford NP205 Transfer Case 76-79 Married. Six bolt circle pattern, female 31 spline input. Transfer Case is completely rebuilt with new wear parts (bearings, seals, etc.) and inspected gears and shafts. The NP205 is arguably the King of Transfer Cases. It's a heavy duty, gear driven unit that was used in a variety of applications.

This NP 205 Shop Manual/Technical Manual is a must-have reference when rebuilding a NP 205 transfer case. This TM covers all variants and provides step-by-step instructions with color photos and torque values. This is an indispensable, must-have guide. 5 NP205 Transfer Case Manual. Steve on Jul 04, 2022Shop Now for Bearings to fit 1973-1991 GM New Process NP205 Transfer Cases. In stock, quick shipping. Ball Bearings: The Front and Rear Output Ball Bearings on all NP205 Transfer Cases are the same. There are 3 different Input Shaft Ball Bearings used on the various NP205 models. Remote Mount (Divorced) Transfer Cases use the same Deep …Hydraulic systems are widely used in various industries to transfer power and control machinery. One crucial component of a hydraulic system is the hydraulic valve, which regulates...I cant speak for the autos but my sm465 has a seal in the adapter to prevent its fluid from getting into it. The t-case side doesnt though. My truck is an '83 and came with the 465/205 setup. The factory manual says to use ATF in the case. I use synthetic 80-90w.88 4Runner Beach Ride. 11 Tundra Double Cab Rock Warrior. E. Elwenil. 17248 posts · Joined 2005. #3 · Oct 3, 2010. Yup, 30 wt motor oil is correct for an NP203. The NP203 is easy to identify as it's a large cast iron housing with an aluminum tail housing. 1988 Dodge AW450 Ramcharger-318TBI-NP435-NP205-D60s.

You can end a car lease early in a number of ways. You might transfer the lease to someone else or trade the vehicle in for another. You can sell the car, or buy out the lease. But...As has been discussed in previous posts, NP205 transfer cases require 80-90wt Gear oil. Sure, you could run something else. How do you put fluid in a transfer case? Locate the filler plug on the side of the transfer case. Clean the filler plug and the area around it using a shop rag; this avoids contaminating the new transfer case fluid.TK10859 Genuine NP205 Low Gear. 9910859. $149.98. Out of Stock. 1. 2. 3. Next. Shop Now for Gears, Shafts, and Coupler Sleeves to fit 1973-1991 GM New Process NP205 Transfer Cases.1973 - 1979 F-100 & Larger F-Series Trucks - Transfer case lube - I have a 1978 F-250 with NP 205 transfer case. My manual says to use gear oil, but when I took the plug out, it looked there was tranny fluid in there.The NP205 transfer case, also known as the New Process 205, is a heavy-duty, gear-driven transfer case that was first introduced in 1969. It was designed to handle the demanding conditions of off-road and heavy-duty applications. The NP205 transfer case is known for its strength, reliability, and ability to distribute power evenly to all four ...Its Comin Right for us! NP 205 transfer case requires 30 W (colder climate) gear oil or 50 W (hotter climate) gear oil. There was a big thread on this someplace on these boards.. it was quite an interesting discussion. IIRC the 205 takes 50W oil and the 435 takes 80-90 or equivalent.

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Shop Now for Parts, Tools, Info for 1969-1972 GM New Process NP205 Transfer Cases. In stock availability on most items for quick shipping. The NP205 is a cast iron, gear drive transfer case with a 1:1 high range and a 1.96:1 low range. It is considered by many to be the strongest transfer case ever factory installed in one ton and smaller 4x4's. The Casing. As a general rule, the iron case was a dead giveaway to the NP205 transfer cases. For one thing, the NP205 weighs nearly 140 lbs, while the stock NP208 has an aluminum casing and weighs around half as much. Many owners get confused with the NP205 and 203, but there are some ways to tell them apart visually.1974-1979 Ford Fullsize. NP205 Transfer Case: Type: Part-time, cast-iron, geardriven case. Low range: 1.96:1. >Why you want it: One of the burliest transfer cases ever built. Made with both right- and left hand outputs, and divorced versions. It is heavy-duty, geardriven, and relatively easy to find.Truck Year. 85 K20 LWB. Truck Model. Silverado. Engine Size. 454 - Turbo 400 - 3.73. The 4 transfer cases availalbe in Squarebodies from 73-91 were NP203, NP205, NP208 and NP241C. All are passenger side drops, and all are manufactured by New Process. Here is a little information on all of them.Someone has put the lovely NP203 into your Bronco. Full time 4 wheel drive. It uses 80W-90 gear lube. :stupid: John in AZ said: I believe the 203 should have straight 30 weight oil in it. The original OEM maintenance listing has 30 weight as the recommended weight for tcase fluid.

Sep 25, 2011 · #1. What kind of lube do I use in a 205 T-case? I have an old Ford shop manual and it says to use 50wt engine oil----I will be driving this truck in winter -20 cold and summer 90 heat. Also how much lube is needed? Transmissions are a work of automotive genius. The transmission takes power from the engine and then multiplies this power through a series of gears to make the car go. When you ha...As has been discussed in previous posts, NP205 transfer cases require 80-90wt Gear oil. Sure, you could run something else. How do you put fluid in a transfer case? Locate the filler plug on the side of the transfer case. Clean the filler plug and the area around it using a shop rag; this avoids contaminating the new transfer case fluid.Apr 24, 2008 · I was going to change the transfer case fluids, but I'm not sure which transfer case I have. Chilton Manual says NP203 and 205 were used from 76-79. 205 is a part time and 203 is full time. 203 calls for engine oil and 205 calls for gear oil. If somebody could help me identfiy it I'd appreciate it. A 75 K10 should have an NP203 chain drive t-case so it can take 10w30 (recommended more for a 203 behind a SM465 4-speed) or Dextron II or III auto trans fluid. The rear diff may need gear oil with limited slip additive, either way I think it's 80W90, same for the front but it will more than likely be an open diff which will take straight 80W90.1973 - 1979 F-100 & Larger F-Series Trucks - Transfer case lube - I have a 1978 F-250 with NP 205 transfer case. My manual says to use gear oil, but when I took the plug out, it looked there was tranny fluid in there.Dodge & Ram Transfer Case Fluid Type; Ford Full Size 4x4 Transfer Case Fluids; Warn Premium Hub Applications; Warn Standard Hub Applications ... 1973, 1974 Dodge W100, W200, W300 Remote Mount NP205 Transfer Case 1980,1981,1982,1983,1984,1985,1986,1987,1988,1989, 1990,1991,1992,1993 Dodge …Parts, Tools, and Manuals for Dana and New Process Transfer Cases in 1973-1991 Chevy and GMC full-size 1/2 ton to 1 Ton 4x4 trucks and SUVs. 1973-1979 GM NP203 Transfer Case Parts & Manuals. 1973-1991 Chevy & GMC NP205 Transfer Case Parts. 1981-1988 GM NP208 Transfer Case Parts & Manuals.

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Install the case yoke, oil seal, output shaft yoke washer and shaft nut on the front or rear output shafts. Tighten the nut to 203-244 Nm (150-180 lb-ft) front; 163-203 Nm (120-150 lb-ft) rear. Connect the front or rear driveshaft to the transfer case output shaft case yoke. Refer to Section 05-01.NP205 Transfer case. ESP-M2C83-C OR EQUIVALENT, 4.5 Pints. My research shows people claiming it takes ATF, 30W, 50W, 75W90, 80W90, etc... Dana 60 …#2. If its a cast iron case, like the 205, run gear lube. If its an aluminum case then trans.fluid should be run. 73k5blazer.I was going to change the transfer case fluids, but I'm not sure which transfer case I have. Chilton Manual says NP203 and 205 were used from 76-79. 205 is a part time and 203 is full time. 203 calls for engine oil and 205 calls for gear oil. If somebody could help me identfiy it I'd appreciate it.1973-1991 GM NP205 Shift Parts. Shop Now for Shifting Parts Large and Small to fit 1973-1991 GM New Process NP205 Transfer Cases. In stock, quick shipping. As far as hard parts go, the only high wear items in an NP205 are the Forks and Sliding Clutch Collar Rings. Any visible wear on the Fork Tips or Clutch teeth is grounds for replacement.May 22, 2020 ... ... T-case combo, to show how easy it can be. Then I put them back in and remove the drivetrain as usual. The NP205 transfer case comes out with ...My silver Oct made 77 with a 351M/C-6/NP-205 gets 80/90 gear oil in the xfer case. The "Shadow" told me to do it. lol. On my 78 I've run 50w motor oil and 80w90 gear oil in both the 435 transmission and the 205 case. I originally put 50w in both, but last time I had them out I switched to 80w90 in both.In some cases, fluid on the lungs, or pleural effusion, is dealt with by treating the cause of the fluid build-up, such as pneumonia or congestive heart failure, according to WebMD...March 30, 2023. A transfer case leaking transmission fluid is a serious problem. It can cause damage to the transmission and other components in your car. To fix this, you’ll need to identify where the leak is coming from, clean off any excess fluid, and replace any damaged parts or gaskets. You may also need to add additional fluid if needed.Mar 12, 2015 ... Installing Idler Gear And Setting Bearing Play On A Chevy Squarebody NP205 Transfer Case ... Will the wreckers NP205 transfer case live?

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4l80e / NP205 Fluid Transfer. I have a 4L80e from about a 2005 4x4 truck. I just ordered an adapter from one of the vendors (Trail Tech Fab) to mate this to my NP205. The 4L80e uses ATF and I believe the NP205 uses gear oil, although I have seen some debate. I also thought I rember reading that when swaping in the 4L80e you're supposed to plug ...np 205 oil type dilemma. Too much to choose from nowadays. Atf type F fluid, synthetic 75-140 hypoid GL 5 or 80-90 hypoid GL 5? The th400 has dexron III in it and the gear vendors old type J behind the t-case requires aft type F. I Googled np 205 oil type and some people use 80/90 GL 5 in summer/or all year around, aft fluid in the winter but ...NP205 TRANSFER CASE ADAPTER SEALS & O-RING REPLACEMENT. K10 Transfer case full of or filling with transmission fluid? Watch this thorough step-by-step repl...I have a 1973 Chevy truck with the NP205 gear driven transfer case. My original 1973 manual says to fill it with 80w gear oil. Later manuals for the same transfer …np 205 oil type dilemma. Too much to choose from nowadays. Atf type F fluid, synthetic 75-140 hypoid GL 5 or 80-90 hypoid GL 5? The th400 has dexron III in it and the gear vendors old type J behind the t-case requires aft type F. I Googled np 205 oil type and some people use 80/90 GL 5 in summer/or all year around, aft fluid in the winter but ...Jun 12, 2020 ... NP205 Transfer Case Rebuild. 807 views · 3 years ago ...more. Curmudgeon Transmission. 12.9K. Subscribe. 12.9K subscribers. Additionally, if the transfer case fluid level is low, the entire transfer case should be inspected for leaks and damage. Many mechanics (and some manufacturers) recommend that you replace the transfer case fluid at least every 30,000 miles. When the fluid is replaced, pay careful attention to the fluid you are draining; if there is a burnt ... 1972-1993 Dodge NP205D Shift Parts. Shop Now for Shifting Parts Large and Small to fit 1972-1993 Dodge New Process NP205 Transfer Cases in W100, W200, W250, W300, & W350 4x4 trucks. In stock, quick shipping. As far as hard parts go, the only high wear items in an NP205 are the Forks and Sliding Clutch Collar Rings. I checked the fluid in the tcase, and surprisingly, it's really quite fresh/new ATF. Would be hard to tell that fluid from the new ATF I just put in. ... 1988 Ramcharger AW450-318EFI-NP435 4 speed-NP205 Transfer Case-Dana 60s-Braden Wormdrive Front Winch 2018 Ram 2500HD Crew Cab 4WD 5.7L I am the unknown Will, The Anger that …The overall heat transfer coefficient represents the total resistance experienced as heat is transferred between fluids or between a fluid and a solid. The two materials refers to ...Position 3 = outer lever center (neut), inner lever back (2WD). Position 4 = outer lever forward (Hi), inner lever back (2WD). Full Back = outer lever forward (Hi), inner lever forward (4WD). The operation of the transfer case levers is function of the shift lever.Truck Year. 1985. Truck Model. K20. Engine Size. 5.7. After reading about 3-4 different amounts of ATF these cases take, just wondering if anyone knows for sure. My 208 puked fluid out of every seal, but it was assembled wrong, so its a wonder it wasn't worse than it was. I see to fill it til it comes out the filler plug, stop at an inch below ... ….

1. GM New Process 205. GM TRANSMISSION AND TRANSFER CASE INFORMATION: The early GMs 1968-70 used a Dana 20 & Rockwell style transfer case and no adapters are available for these vehicles. In 1971, New Process introduced a model NP203 (chain-driven), and NP205 (gear-driven) transfer case. Both of these transfer cases used …Dodge & Ram Transfer Case Fluid Type; Ford Full Size 4x4 Transfer Case Fluids; Warn Premium Hub Applications; Warn Standard Hub Applications ... 1973, 1974 Dodge W100, W200, W300 Remote Mount NP205 Transfer Case 1980,1981,1982,1983,1984,1985,1986,1987,1988,1989, 1990,1991,1992,1993 Dodge …The NP205 is a cast iron, gear drive transfer case with a 1:1 high range and a 1.96:1 low range. It is considered by many to be the strongest transfer case ever factory installed in one ton and smaller 4x4's. The NP205 (IHC Code T142 or 13142) replaced the New Process NP202 (IHC Code T141 or 13141) which was only used by International.This NP 205 Shop Manual/Technical Manual is a must-have reference when rebuilding a NP 205 transfer case. This TM covers all variants and provides step-by-step instructions with color photos and torque values. This is an indispensable, must-have guide. 5 NP205 Transfer Case Manual. Steve on Jul 04, 2022Your car's power steering system is one of the least noticeable, but most powerful systems it has. The average power steering pump can run at 1,000 to 1,500 psi of pressure on the ...Jul 14, 2020 · Replace Transfer Case Fluid: 36,000 miles: 57,600 km: Adjust Valve Lash: 24,000 miles: ... Transfer Case NP205 NP231 NP231HD NP241 NP241HD: See Below 2.22 Quarts 1.25 ... Jun 12, 2020 ... NP205 Transfer Case Rebuild. 807 views · 3 years ago ...more. Curmudgeon Transmission. 12.9K. Subscribe. 12.9K subscribers.Shop Now for Input Yokes and Output Yokes to fit 1973-1991 GM New Process NP205 Transfer Cases. In stock, quick shipping. New Process NP205 Transfer Cases were built with a wide variety of driveshaft yokes from 1310 to 1410 series plus 4 types of Constant Velocity yokes. Most of the output shafts and all the remote input shafts are 1-3/8" in ...The NP205 is a gear driven transfer case. The NP205 was utilized in GM, Ford, International and Dodge full-size trucks. General Motors Chevrolet transfer case has a racetrack (circle eight) pattern in the model years 1971 through 1985 with 8-bolt circle pattern. Later model GM NP205 units were supplied with 6-bolt circle pattern.NP205 Transfer case. ESP-M2C83-C OR EQUIVALENT, 4.5 Pints. My research shows people claiming it takes ATF, 30W, 50W, 75W90, 80W90, etc... Dana 60 … Np205 transfer case fluid, 1973 - 1979 F-100 & Larger F-Series Trucks - Transfer case lube - I have a 1978 F-250 with NP 205 transfer case. My manual says to use gear oil, but when I took the plug out, it looked there was tranny fluid in there., Yes, Duncan, there is an intermediate housing between the two that separates the tcase from the transmission. Probably be a job for a mechanic, since I don't have the necessary tools. I think the lens of time is required to differentiate between the real milestones, and the detours along the way., QU11517 17 Tooth Speedometer Driven Gear for Dodge and IHC NP205. 11517. $59.98. Shop Now for Speedometer Parts to fit 1972-1993 Dodge New Process NP205 Transfer Cases in W100, W200, W250, W300, & W350 4x4 trucks. In stock, quick shipping., Chrysler's New Process Gear Division built gear drive NP205 transfer cases for 1972-1974 and 1980-1993 Dodge Trucks. The 1972-1974 version was a remote mount unit used in W100, W200, and W300 4x4 Trucks. For the 1975-1979 models years, Dodge opted to use the troublesome NP203 full time transfer case instead of the reliable NP205, but effective ..., Mar 28, 2020 · 29K views 4 years ago. How to change the transfer case fluid in a New Process NP203 and NP205 transfer case in a 1967-1987 Chevy and GMC Pickup Truck. , Try driving the truck to warm the fluid then drain it. Add two quarts ATF to the case then put it in nuetral and run the trans in drive for a couple of minutes to flush the …, NP 203 is less durable than NP 205, which is bulletproof. However, the NP 205 is all gear driven, cast iron, and part time T-case. The NP205 is completely gear driven, can be twin splined with little effort, & is probably one of the most robust light-duty transfer cases ever produced. It has a four-wheel drive as well., TK50092 NP205 Transfer Case Rear Output Seal for all Dodge, Jeep NP200, Dodge, IHC NP201, and Chevy, Dodge, Ford, GMC, IHC NP205 transfer cases with the standard 2.125" diameter output yoke. TK50092 also fits all remote mount 205 transfer cases as an..., Transmission & Transfer Case. Transfer Case . Np205 OIL TYPE. Thread starter Uscombsp; Start date Sep 18, 2017; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. ... The GM recommendation in my 1975 repair manual is to use SAE 80 or SAE 90 weight GL-5 gear oil in the NP-205, so …, Shop Now for Input Yokes and Output Yokes to fit 1969-1971 Dodge New Process NP205 Transfer Cases. In stock, quick shipping. New Process NP205 Transfer Cases were built with a wide variety of driveshaft yokes from 1310 to 1410 series plus 4 types of Constant Velocity yokes. Most of the output shafts and all the remote input shafts are 1-3/8" in ..., The NP205 transfer case is a heavy duty gear driven transfer case in a cast iron case. The NP205 gear driven transfer case is considered by many to be the king of bulletproof. It was supplied in many GM, Ford, International and Dodge full-size trucks. Index Number. Part Description., 034. 5526 posts · Joined 1999. #5 · Nov 9, 2001. Make sure your seals between tranny and t-case are ok, and I'd use gear lube in the 205. Keep in mind the automatic tranny stuff is pressurized, while the t-case is not. That just means that if a seal does let loose, you get a little auto tranny fluid in the gear lube (won't really hurt ..., Additionally, if the transfer case fluid level is low, the entire transfer case should be inspected for leaks and damage. Many mechanics (and some manufacturers) recommend that you replace the transfer case fluid at least every 30,000 miles. When the fluid is replaced, pay careful attention to the fluid you are draining; if there is a burnt ..., Fluid Overload is more fluid than the heart can effectively cope with. Fluid overload (hypervolemia) occurs when the circulating volume is excessive. Try our Symptom Checker Got an..., I have a th350 trans and a np205 transfer case. I have replaced the 2 seals in the adapter in last month twice and I'm still getting transmission fluid in the t case. I'm still running the factory motor mounts and factory crossmember for the transfer case so it's not at any crazy angle., 1. GM New Process 205. GM TRANSMISSION AND TRANSFER CASE INFORMATION: The early GMs 1968-70 used a Dana 20 & Rockwell style transfer case and no adapters are available for these vehicles. In 1971, New Process introduced a model NP203 (chain-driven), and NP205 (gear-driven) transfer case. Both of these transfer cases used various input splines., Nov 9, 2001 · 034. 5526 posts · Joined 1999. #5 · Nov 9, 2001. Make sure your seals between tranny and t-case are ok, and I'd use gear lube in the 205. Keep in mind the automatic tranny stuff is pressurized, while the t-case is not. That just means that if a seal does let loose, you get a little auto tranny fluid in the gear lube (won't really hurt ... , The 4 transfer cases availalbe in Squarebodies from 73-91 were NP203, NP205, NP208 and NP241C. All are passenger side drops, and all are manufactured by New Process. Here is a little information on all of them. And we'll add more info as the thread grows. Soon, we'll have all the transfer case info all in one thread which comes in handy for ..., Dodge & Ram Transfer Case Fluid Type; Ford Full Size 4x4 Transfer Case Fluids; Warn Premium Hub Applications; Warn Standard Hub Applications; ... Decrease Quantity of TK10516 Standard Bore NP205 Transfer Case to Adapter Gasket Increase Quantity of TK10516 Standard Bore NP205 Transfer Case to Adapter Gasket. Price: $16.98. …, 034. 5526 posts · Joined 1999. #5 · Nov 9, 2001. Make sure your seals between tranny and t-case are ok, and I'd use gear lube in the 205. Keep in mind the automatic tranny stuff is pressurized, while the t-case is not. That just means that if a seal does let loose, you get a little auto tranny fluid in the gear lube (won't really hurt ..., The NP205 is a cast iron, gear drive transfer case with a 1:1 high range and a 1.96:1 low range. It is considered by many to be the strongest transfer case ever factory installed in one ton and smaller 4x4's. The NP205 (IHC Code T142 or 13142) replaced the New Process NP202 (IHC Code T141 or 13141) which was only used by International., Here are my choices for the drive train fluids: --np205 (gear driven), DANA 60 and DANA 44: valvoline 80w90 conventional gear oil. --np435: will change with Valvoline 75w90 synthetic with GL5 spec--looks like some kind of motor oil in there now. I will also see if the transmission can be flushed., Heavy 4x4s with low gears, big tires, and high horsepower output may cause the factory cast-iron Dana 300 case to split in half. If this is a concern or problem, you can upgrade to a Behemoth ..., my trans takes 90wt oil..... and so does my np205 ..... bough 1 gallon of gear oil from autozone & a nifty hose that goes onto the 1 gallon jug... 1 gallon = $6.50 1 quart = $2.67 so buying the gallons is cheaper even with buying the $4 adapter.., The correct fluid for your transfer is dextron/mercon transmission fluid.To check the fluid level,jack up both ends of the vehicle and be sure to support with jack stands.Make sure vehicle is level.If you look at the rear of the transfer case,you will see two plugs,one lower than the other.Remove the lower plug and if fluid runs out it was overfilled,if nothing runs out,stick your pinky finger ..., Hydraulic systems are widely used in various industries to transfer power and control machinery. One crucial component of a hydraulic system is the hydraulic valve, which regulates..., Re: Manual Trans/ Transfer Case oil. « Reply #1 on: March 03, 2017, 09:01:31 PM ». 80w90 or 75w90 gear oil for transmission, For the 205, I am pretty sure gm started using atf in them around the late 70's, but you won't go wrong using the same oil as the transmission. Sent from my iPhone using Tapatalk. Logged., QU20030 NP205 Transfer Case Front Yoke Slinger. 20030. $39.98. Out of Stock. 1. 2. Next. Purchase a Ford 1977-1979 NP205 yoke from Torque King. Whether you need an input or output yoke, our kits & accessories will get your 4x4 truck back into great condition to handle tough jobs., When most people think of the New Process 203 transfer case, two things come to mind: 1) 300 bulky pounds of cast iron. 2) Undesirable full-time operation. One of the biggest mis-conceptions about ..., I believe there are some transfer cases that use trans fluid, but the ones common in our years, the Rockwell T-221, NP205 and Dana 20 all use gear oil. 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile, Apr 24, 2008 · I was going to change the transfer case fluids, but I'm not sure which transfer case I have. Chilton Manual says NP203 and 205 were used from 76-79. 205 is a part time and 203 is full time. 203 calls for engine oil and 205 calls for gear oil. If somebody could help me identfiy it I'd appreciate it. , Location. wilkes-barre, pa. Jun 25, 2010. #5. ATF installed at factory Many moons ago got a new 1988 V30, SM465/NP205. Gear oil was in the trans and ATF in the transfer. After installing a trans and transfer pto's replaced transfer lube with 80W90 GL5. Still goes good now after 22 years., Shop Now for Bearings to fit 1973-1991 GM New Process NP205 Transfer Cases. In stock, quick shipping. Ball Bearings: The Front and Rear Output Ball Bearings on all NP205 Transfer Cases are the same. There are 3 different Input Shaft Ball Bearings used on the various NP205 models. Remote Mount (Divorced) Transfer Cases use the same Deep Groove ...