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This article covers a particular type of transmission, the 4-speed automatic transmission, and everything you need to know about it. But before then, let’s highlight why vehicles use transmissions.
Expect to find various combinations out there because these high-performance four-speed transmissions have been thrashed, trashed, and rebuilt through the decades.
While it’s obvious that the four speed will use three shift-linkage arms and the three speed will have two, if the first letter is R, then you have found a four speed. If it starts with an S, you are looking at a three-speed Saginaw.
Whether you’re looking for a manual transmission as an OEM replacement part or looking to add a performance shifter to your speed machine, Summit Racing has all of the 2-, 4-, 5- and 6-speed manual trannys you need to keep charging to the front of the pack.
Richmond's 4-speed, manual-shift Super T-10 transmission is available in a base model known as "the NASCAR standard" or a Plus version built for road course racing. Additionally, Super T-10 Plus Transmissions have a steel input bearing retainer and race brass synchro rings.
It’s one of the most universal and reliable 4-speed transmissions ever made by General motors. It has a long life span and notably increases performance. People who want a noticeable increase in horsepower can even tweak it.
Here we show you the basic concept of this fully automatic four-forward-speed transmission with electronic controls that is designed with a four-element torque converter.
Four-speed manual transmissions are largely outdated, with five- and six-speed manual transmissions taking their place as the more common options. Some performance cars may offer even more gears. However, they all work more or less the same, regardless of the number of gears.
A car with a 4-speed automatic transmission will accelerate slower than a 6-speed transmission because it has to cover more speed (mph or kph) before shifting to the next gear. Although produced and developed early, 4-speed automatic transmission has only been applied widely since 1980.
The launch gear is almost like the first gear in a regular automatic transmission. As the vehicle speeds up, the transmission will switch this out, so it starts working as a CVT.