JavaScript is disabled. 8.67 @ 156 mph and 5.55 1/8th. But for each one, you need to check and find out the clocks position. If 1.76 or 1.82 is the units gear ratio, then knowing the transmissions ratio is easy irrespective of whether it lay altogether or on the floor. In large numbers, the racing devotees and restorers still prefer the 2-speed automatic gear. Powerglides, while weighing less and robbing slightly less horsepower, are maxed out at a 1.62 low gear, making them less forgiving than a two-speed Turbo 400. Holden vehicles fitted with Chevrolet V8 engines used the 1.76 ratio gear-set. For today's heavy cars, the 4L60E's 3.06:1 First gear ratio makes it a very popular choice. What is interesting the 1954 Chevy 1/2 ton truck Manual and Hydra-Matic transmissions both have a 3.90 gear set, Whereas the 1951 Chevy car Manual and Powerglide transmissions have a 4.11 gear set for the Manual trans and a 3.55 gear set for the Powerglide trans. Pontiac 326 Vs Chevy 327 Differences & Similarities. Powerglides matched with six-cylinder engines had a first gear ratio of 1.82-to-1 and a direct gear of 1.00-to-1 for the second gear. This transmission is a 3 speed, and no overdrive gear was available. That is another article in itself. $50.00 + $45.00 shipping. Chassis Control System Error: What Causes This Problem And How To Fix It? After seeing this 'Glide's guts up close, we'd have to agree. The Powerglide automatic transmission loyally served Chevrolet and General Motors for nearly a quarter of a century. For a better experience, please enable JavaScript in your browser before proceeding. CUT - VASCO - SG4 SUN, T400 OUTPUT - LIGHT, STRAIGHT From 1957 to 1961, Chevrolet also produced the Turboglide, an automatic transmission with concurrent fluid-driven turbines, whose design was similar to that of Buick's Flight Pitch Dynaflow, subsequently called Triple Turbine (full technical description). type. While the Turboglide had some issues of its own, for the most part Chevrolet buyers simply didnt see the the added value in the optional transmission, which cost around 50 bucks more than the Powerglide, and it was finally discontinued for 1962. For the 1968 model year, Chevrolet introduced a semi-automatic version of Powerglide marketed under the name Torque-Drive. positive about this, but I believe most 8 cyl. How do I know what Powerglide gear ratio I have? Check if this part fits your vehicle. Not Yet Reviewed. How Do You Identify The 2 Speed Powerglide Gear Ratios? The eight-cylinder engines used a 1.76:1 low gear and 1.00:1 high. Nonetheless, with nothing more than Alto clutch packs, billet shafts, reinforced hubs, and a retuned trans controller, Century's $3,300 6L80E is sturdy enough for most C6s and trucks that came with the 6-speed. [ (Axle Ratio x Vehicle Speed x Transmission Ratio x 336.13) / Tire Diameter ] = [ (3.73 x 65 x 1.00 x 336.13) / 31 ] = [ 2628 ] Note: 336.13 is used to convert the result to RPM = [63360 inches per mile / (60 minutes per hour x Pi.)] It keeps the car running pretty much but also tends to fail. In fact, the earliest Chevrolet technical literature often referred to the unit as a torque converter transmission rather than the more simple and familiar automatic. The original 1950 design employed a five-element, bolt-together converter that provided a torque multiplication factor of 2.20:1. Photo below courtesy of ATI Performance Products. For V-8 models, the automatic had a 1.76-to-1 first gear and 1.00-to-1 second gear ratio. . Part Number: SOX-28180G-01. Sonnax high performance products meet the toughest challenges faced by hard-working, daily-use drivetrains as well as racing units going all-out on the street or track. Although the venerable GM Powerglide has only two forward speeds inside its case, it has been the gold standard of durability in the racing world since the '50s. Generally a.c. cars had a lower gear ratio. What is the strongest GM automatic transmission? The rotating planet gear causes the rotation of the ring gear. Shim Kit, Powerglide Heavy Duty In specific applications, the Powerglide transmission reliability is up to 3000 HP. One notable exception was the export version of the transmission, which offered only the 1.82 ratio and was used by Holden in Australia behind their Australian built 6-cylinder and V8 engines. Reverse gear was 1.82:1. BTE manufactures all of the critical components to make the powerglide transmission the best choice for drag racing. The big difference is the first-gear ratio. I threw the shifter upright into R and locked up the rear wheels. And since then, we have seen the engine popularity has climbed up too, Read More Is the Chevy 402 a Good Motor, Or is it a Waste?Continue, One of the trickiest parts of a car engine is the ignition coil. Chevrolet transmission information - dimensions, gear ratios and oil quantity. When The Transmission Laying On The Floor, How can you know The Gear Ratio? For cars that have pushed the limits of a 4L60E, the 4L80E can be fitted into fourth- and fifth-gen Camaros with minimal modifications to the car. The 1.82 gear ratio or gear sets power limit is up to 550 HP engines. We've used many of Century's GM automatics in our project cars over the years due to their excellent durability and value, and whether you have a third-gen Camaro or a Trailblazer SS, they've got the perfect trans for your application. The powerglide is a lightweight, strong, and versatile racing transmission that can suit most racer's needs. My goal with this car is wheel stands . truck and had the .373. rear end. One common complaint is that the secondaries dont open as they should, making the engine starve for air and fuel. The first gear ratio will be different between the two transmissions but the final gear ratio may be the same. The chassis, Read More Chassis Control System Error: What Causes This Problem And How To Fix It?Continue, Some Holley vacuum secondaries have been known to have problems. I couldnt believe he left me in the dust twice! If you install the Turbo Hydro trans, you could easilly switch to a 3.08 rear end (or even numericly lower) for a lower cruising speed. Torque-Drive was only offered on low-horsepower engines for Camaro and Nova. JavaScript seems to be disabled in your browser. 61e (4.26) with 3.27 axle = 13.9:1 overall first gear ratio 61L (3.65) with 3.898 axle = 14.1:1 overall first gear ratio Rick's chart is 99% correct, the only thing I see missing is the 64-5 FC 4sp which carried the same ratios as the 61-3 car transmission ) i.e. When the Chevrolet Powerglide made its debut in 1950, it was the first automatic transmission intended specifically for the low-priced field. A forum community dedicated to hot rod owners and enthusiasts. And this gear set features heavier-duty gears and a machined steel carrier. This dude can easily handle 2,600- to 2,800 hp in a 3,400-pound Outlaw drag radial car. A turbo 350 is all you need and is lighter than a 400 trans. .307 ratio. The Powerglide is a two-speed automatic transmission designed by General Motors. Its bulletproof, simple and easy to customize, he says. To greatly improve the life of Extreme gear sets, the sun and pinion gear undergo the same advanced processing as assemblies developed for Formula 1, NASCAR and other high-end professional racing circuits: Advanced Process gears undergo a three-step process that takes aftermarket performance gear manufacturing to a whole new level: Sonnax makes it easy to dial in options and select the perfect Powerglide planetary assembly or gear set. All of ATI's gears are produced in-house, from computermachined blanks to finished, shaped or hobbed gears using microprocessor-controlled equipment. One notable exception was the export version of the transmission, which offered only the 1.82 ratio and was used by Holden in Australia behind their Australian built 6-cylinder and V8 engines. Calculators to help you out. My dad would have skinned me. Casting numbers on the case and extension housing. What is the gear ratio of a 2 speed Powerglide? Given the final axle ratio of 3.08:1 in each car, the overall ratio drops to 2.156:1. A relatively narrow-tired car (each rear tire measures 11 inches or less across the tread) has a certain maximum starting-line ratio to be used based upon the weight of the car and the stroke of the engine. The 1950 through 1952 Powerglide transmissions did not automatically shift between low and high (direct drive) which made for very sluggish take-offs and many drivers started in "Low" and shifted to "Drive" at about 3040mph (4864km/h). Transmission Ratio RPM Calculator Determine your engine's RPM based on the transmission gear ratio, tire height, MPH, and the ratio of your ring gear and pinion gear. What is the strongest automatic transmission? Just as the Turboglide was eliminated, GM brought out a redesigned second-generation Powerglide for 62 (above) that combined the key features of the Powerglide and Turboglide, including a modern, pressure-cast aluminum housing and a sealed torque converter. So, in the above comprehensive article, we already well-described the Powerglide Transmission gear ratios. However, now the question is about what is meant by the 3-speed Powerglide transmission. Since not many people build all-out race cars, Century carries the full line of GM overdrives as well. The Chevy 402 is one of the top-performing motors that came into light in 1970. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It was available primarily on Chevrolet from January 1950 through 1973, although some Pontiac models also used this automatic transmission after the fire at the Hydra-Matic factory in 1953. . 1 good stock std length 1.82 aluminum powerglide gearset unraced with sun gear. Now there are large cubic inch race engines that make good torque and horsepower at higher numbers. The 1953 and later units when in "Drive" started in low and automatically up shifted to high at a speed determined by the throttle opening. 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