We stock one of the largest inventories of new & used 3 & 4 speed Manual Trans Parts on the West Coast. it was a 283, 4 spd, now a 327 4 spd. I found that I could cut the shift times in half (or better) by pushing in the clutch about a 1/2 second before I let off the gas. Find muncie 4 speed transmission and muncie 4 speed transmission shifter from a vast selection of Parts & Accessories. Similar to what we discussed in our Automatic Transmission Fluid 101 post, selecting the right gear oil for your manual transmission isn't as easy as it might seem. No ribs on the case 2. Honestly, I had thought about finding one of those 100% non-synchro 4 speed crashboxes because I was so fed up with the 3 on the tree hang ups. NV4500 Transmission. I know the T5 wasnt known for its durability, and this Jeep already has a couple things working against the stock transmission. ) The Chrysler A727 Torqueflite - The Torqueflite line was born in 1956 and has been produced in dozens of different variants over the years. Grooved worm on the input shaft instead of neoprene seal 3. It has a super low first that is 7. To this end, SYNCHRO provides a highly interoperable digital technology environment to drive the construction industries’ evolution from traditional 2D planning and siloed workflows to a highly cooperative and efficient 4D visual planning and VDC project. Tremec 5 Speeds also. both are old school cast iron granny boxes. However, Novak can install a new synchro ring into your first gear if you would like to send it to us. Some Muncie parts are very valuable to Corvette collectors, so check each one's rarity before putting one on your hot rod. Hi everybody. The "SM" in the transmission's designation stands for Synchro-Mesh, in the tradition of other GM gearboxes, though we have heard that it may refer to Stewart - Muncie, a merged transmission division of GM. If this set collar is installed properly, it will do the same job as the snap ring. The most powerful parts lookup and ordering tool in the history of the transmission industry, transend™ enables parts lookup by VIN, Year/Make/Model and even by vehicle License Plate!. Eric and Pat are always there working to make sure i get what i need and what works the best under any circumstance. Kevin Spinks says of the worn synchromesh or wear on the gear knob. Certainly Ford were a major user, as were Dodge, I-H and have even heard of Chevy running them before using their own Muncie SM420 as well as later SM460. com FREE DELIVERY possible on eligible purchases. After driving my Model-A for a while with the stock 3-speed non-synchro transmission, it seemed like the car would be much more compatible with modern-day traffic if it had an overdrive gear. both are old school cast iron granny boxes. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. It has both granny low and overdrive in a package that is approximately the same length as an SM420. GM muscle cars manufactured between 1963 and 1974 were frequently equipped with the Muncie M21 and M22 four-speeds. * 1947-1953: 1. The transmission you select can either be disassembled and machined for a snap ring that will retain the rear main bearing, or the new set collar we supply in the adapter kit can be used in place of the snap ring. There are 2 basic ratios,close and wide. The only real problem I've been having is it wants to pop out of 3rd gear while under acceleration. Both of these transmissions are huge truck 4 speeds, but the 465 is huger than the 420 (it also has synchro in granny gear). The least expensive online catalog for all your Sm420 needs. Comes with synchronizer rings. Motive Gear offers aftermarket ring & pinion gearsets, differential bearing kits, a complete line of transmission and transfer case parts, as well as replacement axle shafts. 108 results for muncie 4 speed transmission Save muncie 4 speed transmission to get e-mail alerts and updates on your eBay Feed. He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in 1963. Solar Graphics USA Transmission Shift Pattern Decal - Compatible with Jeep, Willys Or CJ May Fit Transmission and Transfer Case Models SM465, Dana 18, 4 Speed, Single Stick - 3x2. Please inquire if interested. Just make sure it has the bell shaped tail shaft to accomodate the torque tube and you will be in good shape. The casting numbers on the side of the case should be GM #3761930 or GM #3813389. We stock a complete line of manual transmission and transfer case parts. Toploader 3-4 Synchronizer Assembly with Synchro rings. Synchronizer Assemblies. 1953 Chevrolet 3100 261 cu inch, sm420, 3. I currently use Coastal 80W90 (GL3,GL4,&GL5 rated)and it shifts smoothly, but after extended wheeling time, she gets a little noisey and I'm looking for something to 1) quiet it down and 2) add a little more protection. If this set collar is installed properly, it will do the same job as the snap ring. A bonus to the SMs was that they would both bolt directly to a Chevy bell housing and use all Chevy components. Modern cars use synchronizers in order to avoid the need for double-clutching. New posts: Hot thread with new posts: No new posts: Hot thread with no new posts: Thread is closed. Re: Manual Tranmission options for 5. It is has a very short overall length which makes it excellent for early CJs especially with GM engines. The Gear Box is your online source for t56 transmission parts,t5 transmission parts,borg warner t56,muncie transmission,t10 transmission,super t10 transmission,3550 transmission parts,manual transmission parts,t56 transmission overhaul kit, t56 transmission rebuild,rebuilding a transmission,transmission shift fork,t56 synchronizer assembly,t56 transmission gears,Corvette T56 transmission. Hey guys, I'm looking to quiet down my old '53 Muncie SM420 transmission in my '92 Wrangler. TRANSMISSION EXCHANGE CO is located at 1803 NE MLKing Blvd. I hope to get one myself at some point since I prefer having the ability to change gears between the motor and PTO though to be on the safe side I took advantage of an opportunity to get a PTO drive for my SM420 to use in the interim. Hi everybody. If it is a synchro failure, you can live with that, by double de-clutching. More info on performance mods, clutches and shifters. Find Sm420 on sale here with the largest option of Sm420 anywhere online. The 27-spline tail shaft housing. Muncie, T10,Top Loader, Saginaw 4 Speed Transmissions 1 yr warranty. The synchro hub is an important part of the synchro assembly in a Muncie four-speed transmission. View Details. All gears on the countershaft are removeable except for 1st. The SM420 is the older heavy duty, granny, 4 speed transmission used in Chevy and GM trucks. Non-synchronized 1st, but has only brass type synchro rings for 3rd/4th. , Portland, OR 97212. If this set collar is installed properly, it will do the same job as the snap ring. Synchronizer Assemblies. The transmission has a shift cover that bolts over the top of the transmission that has a shift cover part number of GM #591568. The problem isn't in the tranny though, it's under the dash. TR5B TR5C CAP5 · MUNCIE 318 319 · MUNCIE SM465 TRANSMISSION REBUILD KIT WITH SYNCHRO RINGS FITS '68-'87. Find your next Sm420 and other auto parts and accessories for sale on Ebay today. AC Tech SM420 AC Drive, 2hp, 400-480V, 3 Phase, - Easy Online Ordering, In House Tech Support, and Free Shipping on Orders Over $100!. Muncie SM465 transmission. SM420 Transmission. This worn out Muncie synchro hub is of a type used from 1966-1974. unknown mileage. The top two bolts of the transfercase shifter linkage are no longer used and the shifter is a little unstable, this could be fixed by using a piece of flat stock and running it to one of the. COM is the largest on-line seller of Suspension Lift Systems. both are old school cast iron granny boxes. Eckler's Chevy Trucks is the place to come for all your drive line needs, and all your Chevy Trucks transmission parts. SM420 4spd: This was and still is considered by many 4wheelers as GM's best cast iron granny gear trans, although it is not well known, and not as common as the Sm465 is. IDENTIFICATION - SM420 4spd, RWD or 4WD Top loaded, tower shift "granny-low" transmission found in light and heavy duty applications. Np205 process transfer case diagrams. Weep hole at 6 o'clock on the bearing retainer. 3-4 synchronizer assembly for all 4 speed toploader transmissions with iron case. I would probably need lower rear end gears (currently 3. 8mm timing Ranger over drive sm420 4. Many transmissions were damaged, Im sure, from ignorance and assumption. There are 2 basic ratios,close and wide. T he gearbox used in series Land Rovers was first used by Rover in 1932 Though it has seen several modifications it is an old design that was intended for low powered engines. For right turns i. Skip to content. SM420, NP435, NP540 TRANSMISSION (Perris) synchro mesh rock crawler crawling 4x4 4wd off road mudder mudding dune buggy bogger bogging swamper new process muncie. To this end, SYNCHRO provides a highly interoperable digital technology environment to drive the construction industries’ evolution from traditional 2D planning and siloed workflows to a highly cooperative and efficient 4D visual planning and VDC project. maybe im just being difficult. I do not put just any sets of gears in my transmissions unless its Anaheim Gear's. Does anyone know where I can get a 4th gear synchro for my early SM420 (47-52)? I just called Novak and they don't have any, and they don't know whether they are going to make any. The SM420 is, in our opinion, the perfect off-road-worthy manual transmissions of all time. Borg Warner R-10 and R-11 Overdrives Part Two 1/11/17 In part one of this series I covered the top ten things you need to know if you have a B-W overdrive transmission in your antique vehicle. I doesn't seem to do it during deceleration or using your engine to hold your speed while going down hill. thanks!) it was used on the late GM NV4500's and all of the Dodge NV4500's. Re: Manual Tranmission options for 5. There are 2 basic ratios,close and wide. New Process 435 Transmission. Hi everybody. It's a very well written piece and if you scroll down about 3/4 of the write up you'll find a nice 72' K5 that I'm sure we'd all love to have sitting in the driveway!. 55 gears first Gen intercooler fuel screw turned 3/8 1942 WC26 Dodge Carryall 4BT NV4500 NP205 Dana 60&70 hydroboost brakes (project with Daughter). However, we are. They do not bolt to the same clutch housing. Not exactly a MEL transmission. Gear Ratios: The NV4500 is an attractive choice over 4 Speed Transmissions due to its 5th gear however it really isn't significantly better than other heavy duty transmissions such as an SM465 or SM420 because the gear spans aren't that much greater. The top two bolts of the transfercase shifter linkage are no longer used and the shifter is a little unstable, this could be fixed by using a piece of flat stock and running it to one of the. Or just fun facts to know and yell. Best of luck, and happy rodding. The SM465 is also somewhat beefier than the SM420. 1st-2nd synchro ring is bronze 4. The 465 replaced the 420 in 1968. Re: SM420 tranny problems?? I have never had a problem in the cold over the last few years, but if I wasn't running 75w-90 synthetic I think I would notice the cold weather more. However when it comes to driving lessons, some folks still take hands-on driving lessons rather than automatic. I first leaned towards the SM420 and SM465 transmissions. Find Sm420 on sale right here with the biggest choice of Sm420 anywhere online. Buy Transparts Warehouse BK108 GM Chevy SM420 Transmission Rebuild Kit: Rebuild Kits - Amazon. Shifter handle design and the geometry of the linkages is very important. Fiber-lined rings and dual cone-designed rings replaced the bronze synchro rings to improve ring surface area. Certainly Ford were a major user, as were Dodge, I-H and have even heard of Chevy running them before using their own Muncie SM420 as well as later SM460. Find Sm420 and other automotive parts and accessories for sale on Ebay. My bet is the wear on the shift forks contacts that ride in the syncro sleeve. Are you looking for the SM420 standard transfer kits and parts for sale? Shop them all today at Cobra Transmission, your online parts store. Common for these applications is the Muncie SM420 swap, a rugged and GM compatible transmission. Solar Graphics USA Transmission Shift Pattern Decal - Compatible with Jeep, Willys Or CJ May Fit Transmission and Transfer Case Models SM465, Dana 18, 4 Speed, Single Stick - 3x2. D the 4 spd gear box. There are 2 basic ratios,close and wide. A good used synchro cone for SN420 4 speed transmissions. Information On Car and Truck Repair, Parts and Services New, Used and OEM Automotive Parts For Do It Yourself Car and Truck Repair. No ribs on the case 2. The last year of the SM420 (1967) had a backup light switch installed in the top cover to meet that year's federal mandates. Get great deals on eBay!. Gmc 3500 Pick Up Nv4500 Manual Transmission Rebuild Kit W Synchro Rings 99-up - $204. Re: Manual Tranmission options for 5. I was thinking it is probably either a synchro issue or a worn gear. Synchro rings all differ from each other. Both of these transmissions are huge truck 4 speeds, but the 465 is huger than the 420 (it also has synchro in granny gear). 67-91 GM Transfer case/ drive train/ axle guide Part 1 I wanted to share a write up by a guy named Matt (aka 7387 chevynut) from the wegotmud. IDENTIFICATION - SM420 4spd, RWD or 4WD Top loaded, tower shift "granny-low" transmission found in light and heavy duty applications. We offer a variety of Sm420 for your automotive needs. unknown mileage. NV4500 Transmission. Prices are firm. Chevrolet 4 Speed 27 Spline, 1964- Rebuilt Overhaul Bearing Kits M21 & M22 Transmission. Here's our list (in no specific order) of the Top 11 Best Factory Transmissions Ever Offered in American Cars 11. The "SM" in the transmission's designation stands for Synchro-Mesh, in the tradition of other GM gearboxes, though we have heard that it may refer to Stewart - Muncie, a merged transmission division of GM. Sm420 Almost all the vehicles being generated today are automated. 9 Cummins « Reply #6 on: December 1, 2012, 04:48:04 pm » There are actually all sorts of options, which is the good news, the bad news is many of them will not allow you to bolt on a transfer case, meaning your next option is to use a divorced t-case. The transmission you select can either be disassembled and machined for a snap ring that will retain the rear main bearing, or the new set collar we supply in the adapter kit can be used in place of the snap ring. The SM420 has synchros for everything but 1st. Chevrolet Muncie Transmission Parts - M20, M21, & M22. Weep hole at 6 o'clock on the bearing retainer. I believe that any SM420 from 47 to 54 from a 1/2ton - 1ton Chevrolet or GMC truck should fit fine. We stock one of the largest inventories of new & used 3 & 4 speed Manual Trans Parts on the West Coast. Buy Transparts Warehouse BK108 GM Chevy SM420 Transmission Rebuild Kit: Rebuild Kits - Amazon. I found that I could cut the shift times in half (or better) by pushing in the clutch about a 1/2 second before I let off the gas. Comes with synchronizer rings. SM420 TRANSMISSION PARTS & REBUILD KITS. 73) to help with that hole (especially when pulling my tent trailer). 92DK296-42A Torque lock design 1-2 synchronizer assembly. One improvement of the sm420 over the three speed is the ability to have a synchronized gear to downshift into to get the truck going again without stopping. It is built to handle high horsepower and torque so the internals are very strong. I currently use Coastal 80W90 (GL3,GL4,&GL5 rated)and it shifts smoothly, but after extended wheeling time, she gets a little noisey and I'm looking for something to 1) quiet it down and 2) add a little more protection. I would peruse the Advance Adapters catalog for parts involved in mating a truck transmission to your side-drive Model 18 Spicer transfer case. Chevy Gmc Sm420 4 Speed 2nd Gear Synchro Ring 1948 To 1967 12 Ton To 2 Ton. SM465 4-Speed Transmission Parts & Rebuild Kits. Also covers how to disassemble and rebuild any manual transmission. transmission has a non-synchro first gear. We look at how Pro Motion Performance Powertrain's new T5 transmission modifications for Ford Mustangs offer durability and shave time off your E. 0 Mustang & Super Fords Magazine. I would probably need lower rear end gears (currently 3. mounted with muncie m20 wide ratio gearing. If there are any other parts you may need or if we can help you in any way with your manual 3,4, 5 & 6 speed needs. Muncie Sm420 Transmission Gm 4 Speed 47-66 2 Ton 1 Ton 34 Ton. IDENTIFICATION - SM420 4spd, RWD or 4WD Top loaded, tower shift "granny-low" transmission found in light and heavy duty applications. My bet is the wear on the shift forks contacts that ride in the syncro sleeve. However, I had an SM420 in an '87 F/S Blazer and this is an older cousin to the SM465. Showcasing our extensive selection of rebuild bearing available for purchasing now online. The 27-spline tail shaft housing. 92DK296-42 Torque lock design 1-2 synchronizer assembly. commonly swapped into Series Land Rovers Pick the best combination of gear ratios to match your engine's power specs to how and where you wish to drive your Land Rover. I downloaded a manual. Are you looking for the SM420 standard transfer kits and parts for sale? Shop them all today at Cobra Transmission, your online parts store. GM started using WC boxes as early as 1988 in the Camaro/Firebird line but still kept. It is built to handle high horsepower and torque so the internals are very strong. SM420 TRANSMISSION 3-4 SYNCHRO RING FITS '59-'67 & SOME '48-'53 GM 4-SPEED TRUCKS (WT250-19C). The SM465 is also somewhat beefier than the SM420. Many transmissions were damaged, Im sure, from ignorance and assumption. GMC Transmission Data Figuring RPM to MPH. SM420's The granny gear 4 speed transmissions are common since these were standard trannies in all 3/4 and many 1 ton GM trucks from roughly 1947 through 1967. New, used and rebuilt parts for 66-77 Ford Broncos, 78-79 Ford Broncos and classic Ford Trucks up to 1996. Car Trouble - Doesn't seem to want to go into 3rd gear. The SM420 has proven to be one of the best transmissions ever built. We also offer muncie rebuild kits, racing parts and m22 rock crusher transmissions. We offer nearly all parts at the component level and our master rebuild kit, which includes the most thorough collection of parts offered anywhere. Np205 process transfer case diagrams. Just make sure it has the bell shaped tail shaft to accomodate the torque tube and you will be in good shape. The last year of the SM420 (1967) had a backup light switch installed in the top cover to meet that year's federal mandates. Fiber-lined rings and dual cone-designed rings replaced the bronze synchro rings to improve ring surface area. If that's worn, there will be end-play. SM420, NP435, NP540 TRANSMISSION (Perris) synchro mesh rock crawler crawling 4x4 4wd off road mudder mudding dune buggy bogger bogging swamper new process muncie. The transfercase is adapted to the SM420 using Advance Adapters kit #50-9703, the kit uses the stock transmission mount and shift linkage mounts. 1 - 2 Synchronizer Assembly $136. Shop Sm420 Now! Chevy Gmc Sm420 4 Speed 2nd Gear Synchro Ring 1948 To 1967 1 2. he also needs a shift fork if it is the 420, i'll have him call that Havoc place i found a link for. mounted with muncie m20 wide ratio gearing. It has a super low first that is 7. Our award-winning history of innovation and expertise ensures we provide quality craftsmanship as we serve our customers with knowledge and integrity. 8mm timing Ranger over drive sm420 4. The SM420 gives me a synchronized 3 speed with the option of a granny low first for control off road. muncie4speed. Find more of what you love on eBay stores!. Or just fun facts to know and yell. sm465 Rebuild issues. Also have bell housing and clutch. Muncie, T10,Top Loader, Saginaw 4 Speed Transmissions 1 yr warranty. GM's Muncie SM465 manual transmission, used in light-duty and medium-duty GM trucks and SUVs from 1968-1991, has long been favored by off-road drivers for its low, low first gear that makes it ideal for rock crawling. Toy funds are tied up in my 70, so I may have to take this one on myself. However, I had an SM420 in an '87 F/S Blazer and this is an older cousin to the SM465. This is my latest projectgetting rid of the (weak) Model 20 transfer case and the (antiquated) SM420 shown here in favor of a five speed NV4500 transmission and a new STaK transfer case. Here is a link. Toploader 2nd Gear 28 or 31 tooth. Our award-winning history of innovation and expertise ensures we provide quality craftsmanship as we serve our customers with knowledge and integrity. Model-A 5-Speed Conversion. More info on performance mods, clutches and shifters. We offer nearly all parts at the component level and our master rebuild kit, which includes the most thorough collection of parts offered anywhere. M21 & M22 4 Speed Muncie Chevrolet & GM Rebuilt Manual Transmissions - Buy Factory Direct and Save Money! sm465 bearing rebuild kit. Scouts 1961-65 with the Model 18 transfer case. The addition of this 25% overdrive unit offers you the needed gearing the early Jeeps were lac. There is a formula or two for this, This is the one found in the 1965 GMC Dealer data book;. 4:1 range in addition to the ranges I am used to having. I found that I could cut the shift times in half (or better) by pushing in the clutch about a 1/2 second before I let off the gas. The casting numbers on the side of the case should be GM #3761930 or GM #3813389. Cost is $125. Scouts 1961-65 with the Model 18 transfer case. '54-'63: Bearing retainer snout has no weep hole at 6 o'clock, input seal is neoprene. Motive Gear offers aftermarket ring & pinion gearsets, differential bearing kits, a complete line of transmission and transfer case parts, as well as replacement axle shafts. The transmission you select can either be disassembled and machined for a snap ring that will retain the rear main bearing, or the new set collar we supply in the adapter kit can be used in place of the snap ring. Weep hole at 6 o'clock on the bearing retainer. Re: SM420 tranny problems?? I have never had a problem in the cold over the last few years, but if I wasn't running 75w-90 synthetic I think I would notice the cold weather more. Find more of what you love on eBay stores!. If there are any other parts you may need or if we can help you in any way with your manual 3,4, 5 & 6 speed needs. Find your next Sm420 and other auto parts and accessories for sale on Ebay today. A T98/T18 with some factory parts magic and adapter pieces is another approach. Are you looking for the SM420 standard transfer kits and parts for sale? Shop them all today at Cobra Transmission, your online parts store. If you have a Mustang with a manual transmission, here is some diy on how to replace a burned out clutch. In other words it is possible but may not be practical. nice set but didn't include synchro's so the best I can give it is ok. It has a super low first that is 7. Certainly Ford were a major user, as were Dodge, I-H and have even heard of Chevy running them before using their own Muncie SM420 as well as later SM460. Synchro rings all differ from each other. Model-A 5-Speed Conversion. 55 rear, omaha orange, still 6 volt, RPO green glass, side carrier spare. Protected (Prot) – movement is protected (no pedestrian conflict) green arrow iii. Gear Ratios: The NV4500 is an attractive choice over 4 Speed Transmissions due to its 5th gear however it really isn't significantly better than other heavy duty transmissions such as an SM465 or SM420 because the gear spans aren't that much greater. The transmission has a shift cover that bolts over the top of the transmission that has a shift cover part number of GM #591568. Car Trouble - Doesn't seem to want to go into 3rd gear. Find Sm420 on sale right here with the biggest choice of Sm420 anywhere online. Muncie 3 Speed Transmission The vehicle dealer is among the few continuing to be people in America that you still have to frequently haggle with. The SM420 is an impressive, heavy-duty truck transmission designed for and used in ½, 3/4, 1 and 2 ton trucks. Ring kits are available for: Acura C3P4 G3T4 , K4A6, S1 A1, Y80 GSR, RS LS GS AMC Borg Warner T5 World Class , Buick Saginaw 3 Speed, Saginaw 4 Speed, T10, M20, M21, M22. Get great deals on eBay!. 4:1 range in addition to the ranges I am used to having. The SM420 is the older heavy duty, granny, 4 speed transmission used in Chevy and GM trucks. Our award-winning history of innovation and expertise ensures we provide quality craftsmanship as we serve our customers with knowledge and integrity. I was hoping they could help out, after their locking collar allowed the mainshaft to walk forward wiping out the most forward synchro. Hi everybody. If I could find pics of new ones I would have ordered them already for sure. T he gearbox used in series Land Rovers was first used by Rover in 1932 Though it has seen several modifications it is an old design that was intended for low powered engines. Car Trouble - Doesn't seem to want to go into 3rd gear. LIFTKITS4LESS. 9 Cummins « Reply #6 on: December 1, 2012, 04:48:04 pm » There are actually all sorts of options, which is the good news, the bad news is many of them will not allow you to bolt on a transfer case, meaning your next option is to use a divorced t-case. This is a transmission rebuild kit for a GM/Chevy Truck with a 4 speed SM420 Transmission Identify this Transmission by 1 PTO opening! This transmission has an iron case that is 10. The top two bolts of the transfercase shifter linkage are no longer used and the shifter is a little unstable, this could be fixed by using a piece of flat stock and running it to one of the. A division of Midwest Truck and Auto Parts, Motive Gear offers the highest quality drivetrain components on the market today. Shop Rebuild Bearing on sale here. 1963 Chevy extended cab K20 4x4 p/s p/b 4BT HX30w 1. We look at how Pro Motion Performance Powertrain's new T5 transmission modifications for Ford Mustangs offer durability and shave time off your E. Tremec 5 Speeds also. New and Used Car and Truck Parts and Accessories On Sale Chevy Gmc Sm420 4 Speed 2nd Gear Synchro. SM420 TRANSMISSION 3-4 SYNCHRO RING FITS '59-'67 & SOME '48-'53 GM 4-SPEED TRUCKS (WT250-19C). TR5B TR5C CAP5 · MUNCIE 318 319 · MUNCIE SM465 TRANSMISSION REBUILD KIT WITH SYNCHRO RINGS FITS '68-'87. transmission has a non-synchro first gear. When you start thinking about gear ratios you need to look at the whole picture, not just transmission gearing, but rear axle gearing & tire size play a lot into the equation too. Motive Gear offers aftermarket ring & pinion gearsets, differential bearing kits, a complete line of transmission and transfer case parts, as well as replacement axle shafts. IMHO, the NP shifts a bit better and at one point, had the adapter, the transmission, and had an input bearing turned to run behind an AMC engine. Guys, My SM420 tranny on my 74 has a bad 4th gear synchro. SM420 behind a mildly warmed up 283, adapted to a Dana 18 with a Warn OD. com FREE DELIVERY possible on eligible purchases. * 1947-1953: 1. foreign and domestic, light duty trucks or passenger cars and performance applications. I do not put just any sets of gears in my transmissions unless its Anaheim Gear's. DIGITAL SPY, PART OF THE. SM-420 Rebuild Kit $140; With Synchros $165 This rebuild kit includes all bearings, gaskets , seals, and small parts needed for a complete rebuild. Permitted (Perm) –must yield to pedestrians green ball ii. The most affordable online catalog for all your Sm420 needs. Both of these transmissions are huge truck 4 speeds, but the 465 is huger than the 420 (it also has synchro in granny gear). Ring kits are available for: Acura C3P4 G3T4 , K4A6, S1 A1, Y80 GSR, RS LS GS AMC Borg Warner T5 World Class , Buick Saginaw 3 Speed, Saginaw 4 Speed, T10, M20, M21, M22. GM started using WC boxes as early as 1988 in the Camaro/Firebird line but still kept. The "SM" in the transmission's designation stands for Synchro-Mesh, in the tradition of other GM gearboxes, though we have heard that it may refer to Stewart - Muncie, a merged transmission division of GM. thanks!) it was used on the late GM NV4500's and all of the Dodge NV4500's. Synchro rings all differ from each other. M21 & M22 4 Speed Muncie Chevrolet & GM Rebuilt Manual Transmissions - Buy Factory Direct and Save Money! sm465 bearing rebuild kit. We look at how Pro Motion Performance Powertrain's new T5 transmission modifications for Ford Mustangs offer durability and shave time off your E. 108 results for muncie 4 speed transmission Save muncie 4 speed transmission to get e-mail alerts and updates on your eBay Feed. Muncie 4 Speed 1-2 And 3-4 Transmission Synchro Assembly Wsychro Ring Awt297-2. DIGITAL SPY, PART OF THE. Whether you're repairing an old Chevy Trucks transmission, installing a new one, or rebuilding a car, Eckler's Chevy Trucks is here to help with all your driveline needs, and with a huge selection of high-quality Chevy Trucks transmission parts and services. Toploader 2nd Gear 28 or 31 tooth. Does anyone know where I can get a 4th gear synchro for my early SM420 (47-52)? I just called Novak and they don't have any, and they don't know whether they are going to make any. sm420 transmission 3-4 synchro ring fits '59-'67 & some '48-'53 gm 4-speed trucks (wt250-19c). The 465 replaced the 420 in 1968. We look at how Pro Motion Performance Powertrain's new T5 transmission modifications for Ford Mustangs offer durability and shave time off your E. GM & CHEVY SM420 TRUCK 4 SPEED 1948-67: This transmission can be identified by a cast iron case length of 10-1/2". The mechanical components are very stout and as long as the transmission AND THE OVERDRIVE unit is filled with gear oil (see maintenance below) the only problems should be electrical, which are very easy to trouble shoot. Car Trouble - Doesn't seem to want to go into 3rd gear. Their unique design influenced a generation of transmissions to follow. Just make sure it has the bell shaped tail shaft to accomodate the torque tube and you will be in good shape. 52:1 -1st gear transmission is original to the 1972 vette this is coming out of. A rollerized 1st gear is a must in high load and high speed applications, such as road racing or circle track racing. The "SM" in the transmission's designation stands for Syncrho-Mesh, in the tradition of other GM gearboxes, though we have heard that it may refer to Stewart - Muncie, a merged transmission division of GM. Model-A 5-Speed Conversion. , Portland, OR 97212. This worn out Muncie synchro hub is of a type used from 1966-1974. 1st-2nd synchro ring is bronze 4. IMO non-synchro first gear is not a big deal. The last year of the SM420 (1967) had a backup light switch installed in the top cover to meet that year's federal mandates. I downloaded a manual.