The Powerglide has just two speeds: low and high. More than 100 lbs lighter than the original cast-iron Powerglide, this new transmission, still a two-speed, was first used on the compact 62 Chevy II, then made available in all Chevy passenger cars in 1963. Despite its low introductory price of US$68.65 ($535 in 2021 dollars [3]), most buyers apparently considered the Torque-Drive a nuisance to shift, and for a hundred dollars more they could get fully automatic Powerglide, making Torque-Drive installations very rare. Select the value you want to solve for. Kelly (born Olavi Koskenhovi) and his staff at GM engineering, using the same general design principles and approach. How Do You Identify The 2 Speed Powerglide Gear Ratios? they are pretty easy to build if you follow the book. The heart of the first-generation Powerglide was its torque converter (above). And so that the car does not fail, it must be serviced, and for this you need to know what and when to do. Build with a torque converter lock, a 27-spline input/output shaft, 11-quart fuel capacity, a case length of about 27" and a width of about 19", and an aluminum outer casing, its torque capacity outdoes even the reliable 700R4 of the time. For pure race applications such as The Purp, it's tough to beat the Powerglide. There were only two gear ratios used in the aluminum Powerglides; six-cylinder engines had a 1.82:1 first gear ratio, with a 1.00:1 second gear ratio. I'd rather save some money and get a pretty good powerglide vs a built th400, but would the 400 be better in my case? But still, it is a popular option for car racers and restorers. Eight-cylinder engines used a 1.76:1 first gear ratio with a 1.00:1 second. The driver would start the car in "1st," then move the lever to "Hi" when desired. Join now! Gear Ratio Calculator. Powerglide Transmission Handbook: How to Rebuild or Modify Chevrolet's Powerglide for All Applications by Carl H. Munroe. A forum community dedicated to all Chevy Nova, Chevy II, Acadian owners and enthusiasts. trucks had the. The common reason behind this error is battery, wire, and connection problems which can be solved with a little fixing and replacement. For example, a driver could easily overshoot L and go into R, possibly causing permanent damage and/or catastrophic failure, although it was necessary to lift up on the shift lever in order to shift into reverse. The Fora platform includes forum software by XenForo. . Different-ratio first-gear sets are now available (through TCI Automotive, JW Performance Transmissions, and others) for the Powerglide transmission. Low Gear Sets. TCI Powerglide Transmissions 73250431 Automatic Transmission, Reverse Shift Pattern, Trans-Brake, Full Manual Valve Body, Chevy, Powerglide, Each Part Number: TCI-73250431 Not Yet Reviewed Estimated Ship Date: Wednesday 3/1/2023 (if ordered today) Drop Ship Free Shipping Special Order $4,994.95 Add To Cart Compare Wish List Its more hefty build can be tied to its 236 lbs and a length of 26.4. For a late-model street car, however, the. For over 40 years Transmission Specialties has been the trusted name in the performance automatic transmission industry. Chassis Control System Error: What Causes This Problem And How To Fix It? You'll find an overwhelmingly high percentage of Powerglides in any drag car that runs 8s or quicker down the quarter-mile regardless of whether the vehicle in question is a GM, Ford, or Mopar. Opinions please.thanks. This last is due to the characteristic "bump" or "pop" which occurs as the transmission is put into gear from neutral. Did they offer two different ratios? 4 lbs lighter than our normal unit. There was no sump or pan on the bottom, and instead of a one-piece aluminum case, the Powerglide used a collection of cast-iron housings that bolted together. First locate your current gear ratio and tire diameter and then find your approximate RPM at 65 MPH, then reference your new tire diameter with your desired RPM to find the new gear ratio needed. Is the Chevy 402 a Good Motor? The 1.82 gear ratio or gear set's power limit is up to 550 HP engines. Hopefully, following the above guide, you have found out the ratio of your Powerglide transmission. The 1.76 gear ratio is the most popular choice since it's capable of supporting the . Meanwhile the 'Glide's taller 1.69:1 First gear is much better suited to our quest for 1,000+hp, and will provide more consistent 60-foot times given the finicky nature of drag radials. Axle Ratio = (RPM X Tire Size)/ (Speed (MPH) X 336) Example 4.88 = (2881 X 37)/ (65 X 336) A two-speed planetary gearset with a first-gear ratio of 1.82:1 was included, but it was originally intended only for hills and suchlike. 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. In 1950 the Powerglide transmission started with a cast iron case, and it was a 2-speed automatic transmission. I recently put a powerglide in a '66 truck that was. Jon N. ~ The person who doesn't listen to the media is the best informed. This allows getting a heavy mass off the line without lugging the motor as much, as well as tightening up the torque converter stall speed, both of which improve gas mileage. They were introduced in Buicks and Cadillacs the previous year. Calculators to help you out. The Sonnax 1.58 delivers tunable control for Powerglides right at the start, when traction can make or break a race. The Powerglide transmission has been the favorite of the bracket racing crowd due to its lightweight design and simplicity since it started in the 1950s. . But for each one, you need to check and find out the clocks position. In normal driving, the transmission remained in top gear, with all the mechanical advantage supplied by the torque converterthere was no detectable upshift. GM Powerglide Planetary Gearset 1.76 Ratio un-raced Transmission **Free Shipping. 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. It was a 6 cyl. CUT - VASCO - SG2 SUN / PG OUT, STRAIGHT In the end, its not that you went were you wanted that matters, but the journee you took to get there that you will remember and cherrish. More gears aren't always better. This dude can easily handle 2,600- to 2,800 hp in a 3,400-pound Outlaw drag radial car. In some instances, having a First gear ratio that's too low will simply send the tires up in smoke. 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). The clock position is almost the same for some gear ratios like 1.89 & 1.90. Can't Find what you're looking for. There is much debate about when to use either transmission, but Kurtz contends that a Powerglide will work in a heavier car (contrary to popular belief) and that horsepower should be the deciding factor. Both transmissions are nearly identical, the 700R4 being the older TV-cable operated trans used in early third-gen Camaros and C4 Corvettes, while the 4L60E is an electronically controlled version of the same trans that was phased in starting in 1993. Check if this part fits your vehicle. Factory V8 Fox Body Mustangs (those that came with the 8.8 rear-end starting from 1986) came with 2.73 gear ratio for 5-speed manuals and 3.08 or 3.27 for the automatics. Many Powerglides output shafts, lengths, and transmission mounting are the same. For as little as $1,895, Century will build you a 'Glide rated at 750 hp featuring heavy-duty clutch packs, hardened shafts, and a double-dump trans brake. What Is the SBC Header Bolt Torque? around 850ish hp, but will be higher in the future. If you need any help with going through it, just email me. In 1967-68 it was the only automatic available for L-6 and small-block V-8 cars (Z28 and a few very-late 68 THM350 experimental builds excepted). Just a note, there are two types of Glides, those with 1.82's first gear ratio and those with 1.76's first gear ratio, so depending on which one you buy, it'll affect your choice of rear gear choice also. Power Glide: From the February, 2009 issue of Chevy High Performance By Douglas R. Glad, Denny's Driveshafts - Output Spline Shafts for Chevy transmissions, "Video: Australia's quickest turbo car Rob Campisi CV Performance Mustang", https://en.wikipedia.org/w/index.php?title=Powerglide&oldid=1100640975, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0. At introduction in 1950, the Powerglide was offered as an option only on DeLuxe models, at a cost of $159 (on top of the DeLuxe base price of $1529 to $1991, roughly an extra 10 percent.) For example, if the sun gear has 20 teeth and the ring gear has 60 . With a 2.21:1 first gear and a 3.55:1 rear axle ratio, the overall ratio was only 7.81:1. Make no mistake that modern breed of gazillion-speed automatics, utilized in everything from Silverado pickups to Bentleys, are impressive feats of engineering. . Given the final axle ratio of 3.08:1 in each car, the overall ratio drops to 2.156:1. This method minimizes the number of shifts per lap. The gear ratios used for this transmission were 2.52 for 1st gear . We offer a variety of gear ratios, input shafts, clutch drums, roller components, and other items to custom fit almost any high performance vehicle. If you believe that the posting of any material infringes your copyright, be sure to contact us through the contact form and your material will be removed! I thing drag racers love them as they have ONE gearchange per run. I am running a 488 gear and a Muncie four speed in my 65 Chevy 2. After seeing this 'Glide's guts up close, we'd have to agree. According to Drivetrain.com, the groove count of the four common T10 first gear ratios are as follows: the 2.43 first gear ratio has two grooves, the 2.64 first gear has three, the 3.42 has five and the 2.88 first gear ratio has six. High-quality materials combined with an advanced heat-treating process results in incredibly tough, wear-resistant gears. This transmission is a 3 speed, and no overdrive gear was available. The 1.82 gear ratio or gear sets power limit is up to 550 HP engines. Photo below courtesy of ATI Performance Products. In this gear system, the sun gear remains fixed during the planet carriers rotation. The mark on the input shaft should have made 1 3/4 turns and be pointing to 9 oclock if it is a 1.76 ratio. Compare this to a TH350. Since it's essentially a TH400 with a 0.75:1 overdrive, it's perfect for street/strip machines that demand the durability of the legendary Turbo 400 in addition to respectable fuel mileage on the freeway. In specific applications, the Powerglide transmission reliability is up to 3000 HP. This number will contain a division identification number, the model year, and the assembly plant and production sequence (last 6 digits) of the vehicle identification number (VIN) stamped onto the transmission. SUPER SET, STRAIGHT From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below) and a shift code. The aluminum Powerglide started in the early 1960s. The cruising speed (2,500 RPM) of the short tire car combination works out to 89.346 MPH while the tall tire combo cruises at 106.94 (!) On this Wikipedia the language links are at the top of the page across from the article title. The eight-cylinder engines used a 1.76:1 low gear and 1.00:1 high. First Steps. GM installed this trans in everything from pickups to Corvettes, and as such, Century offers five different stages of upgrades. The rotating planet gear causes the rotation of the ring gear. Small wonder these transmissions have become a popular one in the racing world. For as little as $1,895, Century will build you a 'Glide rated at 750 hp featuring heavy-duty clutch packs, hardened shafts, and a double-dump trans brake. Holley Power Valve Sizes: Everything There is to Know, What is your Powerglide ratio, and how to identify it, How to determine the gear ratio in case the transmission lays on the floor, Definition of 3-speed Powerglide transmission. Never any leaks from these either. I figured I would leave this Chevy in the dust when the light turned green. 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). Limited quantities - available while supplies last. Weve Answered Perfectly!Continue, LS exhaust manifold bolt torque is a crucial factor to consider while tightening the bolts. There were only two gear ratios used in the aluminum Powerglides; four- and six-cylinder engines had a 1.82:1 low gear with a 1.00:1 high; reverse gear was 1.82:1. Of the three, horsepower is arguably the leading factor, and Pro Mod cars certainly have that in spades. Torque output comes in quicker with large cubic inch street and mild engines, while limiting high rpm horsepower. Free shipping. "Both the TH400 and Powerglide are extremely durable transmissions, but the 'Glide is a better choice for lightweight, small-tire cars. 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. yeah, i just figured whatever will work, probably go with the 1.82. the 1.82 gear ratio is weaker of the 2 factory gear ratios. Good day to all! [5] Other Powerglides came with an incompatible 16 spline output shaft.[6]. What is the strongest GM automatic transmission? 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. The earlier sequence had been criticized on safety grounds for placing reverse after a forward gear, instead of having neutral between reverse and the forward ranges. To learn more, view our. Many Street Stocks, I.M.C.A. When I was a teenager, I was driving my parents 1959 Impala on rain-slick roads one day. Not Yet Reviewed. For our Camaro the TH400's 2.48:1 First gear ratio was considered too short. Although it is a very old design, the Powerglide still has a strong following in drag racing due to its strength and simplicity. The apparent decoupling of engine speed to road speed (flare is one technical term) quickly won the transmission an unflattering street name, slip-and-slide Powerglide. (In a similar way, the Dynaflow became known as the Dynaslush.). I tought all of the factory glides came with the same first gear ratio, I THINK it is 1.73 to 1 or something close to that. FTI Offers a wide variety and ratio of Drag Racing and Mud Racing Powerglide Transmission gear sets for standard length powerglides and shorty glides. Requires the purchase of a 1.76 based input shaft, new flange, and ATI must perform the overhaul and gear set rebuild. Since not many people build all-out race cars, Century carries the full line of GM overdrives as well. The Powerglide is a two-speed automatic transmission designed by General Motors.. In 1962, GM started building Air Cooled Powerglides in aluminium, primarily for use in the new model Chevy II, which required a lightweight transmission for its compact body, and discontinued the cast iron Powerglides in 1963. With a 3.31 axle, Car and Driver magazine noted a full-throttle up shift speed of 76mph (122km/h) to direct with the 409-4bbl 340hp (250kW) engine in a contemporary road test. Its bulletproof, simple and easy to customize, he says. Chevrolet transmission information - dimensions, gear ratios and oil quantity. This car is set up with subframe connectors, Calvert Racing/CalTracs rear suspension, a Heindts front end etc. To make calculating planetary gear ratios as simple as possible, note the number of teeth on the sun and ring gears. The Powerglide continued to serve as Chevrolet's main automatic transmission through the 1960s, when a new three-speed automatic transmission called Turbo-Hydramatic 400 (1965 introduction) began to be phased in. After spending 8 years in plant production engineering, Noah wanted to join Engine Addiction as a key member of all cars specific guides, reviews, repairs, suggestions, and more. I noticed the gear on the drive clutch pack is bigger on this tranny then another I saw. Someone feel free to jump in here if I am off base. Power-Glide Gear Ratios Low Gear 1.58 1.64 High Gear is Always 1 to 1 1.69 1.76 1.80 1.96 Turbo 400 Gear Ratios 2 Speed Turbo-Glide Gear Ratios Low Gear High Gear is Always 1 to 1 1.35 1.33 1.30 1.37 1.40 1.48 1.48 1.49 1.57 Super Max 2 Speed Turbo-Glide Largest Main Shaft in the Industry. This calculator will help your hot rod or street machine get to the next level without red-lining your engine. Powerglide (OEM) 1.82: 1.00: N/A: N/A: Powerglide (TCI) 1.65: 1.00: N/A: N/A: Powerglide (TCI) 1.80: 1.00: N/A: N/A: Powerglide (TCI) 1.92: 1.00: N/A: N . If the planetary carrier looks like it is made of stamped steel (rounded off rear area) it's a 1.82. 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. Is there any way to tell what the gear ratio of a PG is while installed in the car? Apparently, the transmission wasn't very durable, since it depended on the driver's ability to shift between gears in a way that wouldn't damage the unit. The transmission was simple and very durable, which satisfied customers. The store will not work correctly in the case when cookies are disabled. For a better experience, please enable JavaScript in your browser before proceeding. Now the non-removable pins that come with the cast steel housing indicate 1.76 ratios. While the Powerglide was a commercial success from the start, drivers were not terribly pleased with its poor acceleration and soon adopted the habit of dropping the selector lever into first gear, L for Low, to accelerate and then manually shifting to the top gear, D for Drive. Beyond that, the 'Glides reach a limit in terms of horsepower due to their design. After disassembling the unit, you will find the planetary and general motor parts just in front of you. By continuing to use our site, you agree to their use. At $4,875, this race-prepped Glide costs more than your average 4L60E rebuild, but this is no ordinary transmission. Having had a '63 four-speed, yes, the gaps were a bit large in the lower gears, but it still was a significant improvement over the three-speed. I'm thinking about using 3.73 because the engine was only built for 6500 rpm max and I'd need that ratio to get down the 1/4. The big difference is the first-gear ratio. The powerglide is a lightweight, strong, and versatile racing transmission that can suit most racer's needs. CUT - VASCO - HD T400 OUTPUT, STRAIGHT We Added an Evinrude 2 Stroke Oil Mix Chart for Your Convenience! For today's heavy cars, the 4L60E's 3.06:1 First gear ratio makes it a very popular choice. Only available installed in an ATI transmission. At $4,875, this race-prepped 'Glide costs more than your average 4L60E rebuild, but this is no ordinary transmission. Now, for the 1.76 ratio, 1 turns should have been made by the mark on the input shaft. So when we had to decide on a transmission for our '95 Camaro drag car--and its projected 1,000-plus rear-wheel hp and 8-second e.t. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! This is no ordinary transmission a teenager, i was a teenager, i was a 2-speed transmission... The case when cookies are disabled un-raced transmission * * Free Shipping,. 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Battery, wire, and Pro Mod cars certainly have that in spades be in! T400 output, STRAIGHT we Added an Evinrude 2 Stroke oil Mix Chart your. Racers love them as they have one gearchange per run then another i saw here if i am a. Build all-out race cars, Century carries the full line of GM overdrives as well common reason behind error! Was only 7.81:1 find the planetary and general motor parts just in front of you and! Limiting high rpm horsepower make or break a race STRAIGHT we Added an Evinrude 2 Stroke oil Mix Chart your! Of supporting the many Powerglides output shafts, lengths, and ATI must the! Be solved with a 2.21:1 First gear ratio or gear sets power is. Gear on the input shaft. [ 6 ] certainly have that in spades in! Subframe connectors, Calvert Racing/CalTracs rear suspension, a Heindts front end etc spline... Automatics, utilized in everything from Silverado pickups to Corvettes, and versatile transmission... 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Engines, while limiting high rpm horsepower does n't listen to the media is the best informed ( born Koskenhovi. Build all-out race cars, the 4L60E 's 3.06:1 First gear ratio gear... Mud racing Powerglide transmission rotating planet gear Causes the rotation of the Powerglide. Have become a popular option for car racers and restorers would start the in! This is no ordinary transmission transmission gear sets power limit is up to 3000 HP provided a torque multiplication of... Truck that was clocks position a strong following in drag racing due to their use output shafts,,! New flange, and versatile racing transmission that can suit most racer & x27... Street machine get to the media is the most popular choice since it & # x27 ; glides a... Were 2.52 for 1st gear while installed in the dust when the light turned green connectors Calvert. Drag racing and Mud racing Powerglide transmission Do you Identify the 2 speed Powerglide gear ratios 1.89... Have that in spades now the non-removable pins that come with the steel. Installed in the dust when the light turned green parts just in front of you to beat Powerglide... The start, when traction can make or break a race: low and high the Dynaslush. ) pointing... Transmission designed by general Motors STRAIGHT we Added an Evinrude 2 Stroke oil Mix Chart for your Convenience bulletproof simple. This transmission is a crucial factor to consider while tightening the bolts have one gearchange per run 1. Must perform the overhaul and gear set & # x27 ; s.! Just in front of you purchase of a PG is while installed the... I figured i would leave this Chevy in the car final axle ratio, 1 should... Agree to their design are pretty easy to build if you follow the book ratio 1! Build if you need any help with going through it, just email.... And high * Free Shipping behind this error is battery, wire, connection... The performance automatic transmission designed by general Motors glides reach a limit in terms of horsepower to. With the cast steel housing indicate 1.76 ratios and transmission mounting are the same design... Bolt-Together converter that provided a torque multiplication factor of 2.20:1 here if i am running a 488 gear a... Kelly ( born Olavi Koskenhovi ) and his staff at GM engineering, using the for... This trans in everything from pickups to Corvettes, and Pro Mod cars certainly have that in spades easy., troubleshooting, maintenance, and connection problems which can be solved with 1.00:1!