Built Ford Tough.
The 4 speed toploader is one of the toughest manual transmissions ever built.
428 Cobra Jet Big Shaft Toploader 4-Speed Transmission RUG-AE2 $1 (snj Cinnaminson) pic hide this posting restore restore this posting. Favorite this post Mar 23 SMALL BLOCK FORD Performance speed parts. The Toploader 4 speed was coded HEH and later RUG. It was to replace the Borg Warner T-10 4 speed. The Toploader gets its name from having an access cover on the top of the main case as opposed to the T-10's side cover entry. Most people involved in Toploaders will mention that the Toploader was only used in Ford cars from 1964 to 1973. Ford M5R1 5-Speed Transmission Parts. Drivers of older model (post-1988) Ford Bronco II, Rangers, Explorers and Mazda B-Series pick-ups with the Ford/Mazda M5R1 5-speed manual transmission will find the M5R1 transmission parts they need as replacements right here at Allstate Gear at affordable prices and quick delivery right to their doors. 'We have revived the world famous 4 speed Toploader' As the world's largest manufacturer of high quality 4 speed Toploader parts, we now manufacture EVERY SINGLE part of the 4 speed Toploader! Looking for Toploader prices? Check out our Toploader Price List page and our David Kee Remanufactured Toploaders page. FORD 4-SPEED MANUAL TRANSMISSIONS CARS MUSCLE CAR / STREET ROD / RESTORATION If you own a Ford Top Loader or BW T-10, you have one of the best manual transmissions ever put in a car. These transmission are still used in Nextel cup cars because of the durability and you would be stepping backwards to Continue reading Ford 4-Speed Man →.
Identification of the Toploader is easy. Toploaders are top accessible (from a 10 bolt steel plate)
For decoding the specific application look for a metal tab riveted on the right side of the transmission body housing.
HEH-? or RUG-? are the codes necessary for decoding specific transmission application from the
Close and Wide Ratio
2 types of gear ratio are commonly associated with the 60's 70's toploader
Ratio type | 2 nd | 4 th |
2.32 | 1.29 | |
Wide ratio | 1.93 | 1.00 |
Ratio chartpage gives a good idea of rpm, speeds and shifting points for both Close and Wide ratio transmissions.
Decoding the Toploader
For most 60's and 70's Toploaders the ID starts with either prefix HEH or RUG
HEH-D | Transmission identification code HEH-D = 64 390 Galaxie, 1 1/16' input shaft, 28 spline output, close ratio |
Transmission serial number | |
RUG-AV1 | Transmission identification code RUG-AV1 = 70-71 302-351 Mustang, 1 1/16' input shaft, 28 spline output, wide ratio |
Transmission serial number |
The lower number on the tag is the transmission serial number. The transmission serial number is a production serial number and should not be confounded with the engine serial number, they are not the same. Some transmissions have a date code instead of the serial number.
Input Shaft
2 different INPUT shaft are commonly available for all V8 Ford's, 1 1/16' and 1 3/8'. But both input shafts have the same number of splines of 10.
1 1/16 ' input shaft | 1 3/8 ' input shaft |
10 spline |
Tailshaft
Also 2 popular OUTPUT shafts are available for the V8 toploader a 28 spline or a 31 spline shaft (sorry, no pictures)
Toploader 4 Speed Gear Oil
Tailshaft housing
Many different Tailshaft housings and shifter positions available with Toploaders.
Toploader 4 Speed Identification
here are a few
Wide transmission insulator mount | |
C4DR-7A040-A | Narrow transmission insulator mount |
Narrow transmission insulator mount | |
C6OR-7A040-C | Wide transmission insulator mount |
Wide transmission insulator mount | |
C9OR-7A040-A | Wide transmission insulator mount |
Wide transmission insulator mount |
Bolt patterns (bellhousing)
2 different bolt patterns. Early Toploaders used a narrow bolt pattern type for attaching the transmission to the bellhousing and the later versions used a wider butterfly type bolt pattern.
Narrow bolt pattern | Butterfly bolt pattern |
Later type |
Toploader exploded view
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We are introducing many selected products to the online store. Please note: Not all parts will be available in the store.We feel that it is important to be able to have dialogue with our customers on the many unique applications they bring to us. Therefore we will not include every product we sell in the online store. If you don't see the item you need in our online store, call or email us to place an order for that item. You can still check our regular online parts listings for current pricing and descriptions. Just select the category at the left and search the parts listings. Then simply call us to place your order!
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Toploader 4 Speed Rebuild
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