Ford 4 speed Toploader
Built Ford Tough.
The 4 speed toploader is one of the toughest manual transmissions ever built.
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 chart page 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
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.
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.
Also 2 popular OUTPUT shafts are available for the V8 toploader a 28 spline or a 31 spline shaft (sorry, no pictures)
Many different Tailshaft housings and shifter positions available with Toploaders.
here are a few
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.
Toploader exploded view
|Ford Borg & Warner T-10|
Several versions of the T-10 where offered for 1960-66 Fords. Towards the later years the cast iron versions where mainly used on small cars. Early Cobra's and 65 Shelby's used and all aluminum T-10 while a variety of all aluminum and part aluminum and full iron ended up used on 66 Shelby's.
All Shelby's used a close ratio gear set.
Ford cars used wide ratio T-10's and several different wide ratios where used on non Shelby cars.
2 different casings available. Narrow bolt type and the later butterfly type
|FMX FX and MX|
|3 speed (3.03)|