3.65 first. I couldn't tell any difference in the engine rpm's. It keeps the car running pretty much but also tends to fail. Used ATI gear sets can be updated! By continuing to use our site, you agree to their use. With a 2.21:1 first gear and a 3.55:1 rear axle ratio, the overall ratio was only 7.81:1. $349 plus parts mentioned. Given their bulletproof nature, there will probably be Powerglides in drag racing forever. By the mid-1950s, more than half of all new Chevrolets were sold with Powerglide. Watch the video to learn how easy it is to level up an existing planetary assembly or build from scratch in the gear ratio of your choice. I am thinking about going to 28" tall slicks under the car. Come join the discussion about performance, builds, restoration, modifications, classifieds, troubleshooting, reviews, and more! trucks had the. quality of work warranty. When introduced on upper-level Chevrolet models in 1950, the Powerglide represented the first automatic transmission offered in a low-priced automobile; in contrast, Ford did not offer their automatic transmission until 1951, while Plymouth car buyers had to wait until 1954. 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. 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. BTE manufactures all of the critical components to make the powerglide transmission the best choice for drag racing. Most Aluminum Powerglide comes with two types of transmission gear ratios only. It is a 1.76 as mentioned, since the 1.82 has 23 teeth on the flange gear. 2023 TCI Automotive. The planetary gear assembly is the backbone of the entire system. On this Wikipedia the language links are at the top of the page across from the article title. At the 1,000-plus rear-wheel hp level, the only two GM transmissions that are up to the task are the three-speed TH400 and the two-speed Powerglide. they are pretty easy to build if you follow the book. CUT - VASCO, STRAIGHT Registered. For our example, we'll use a common 700R4. I'm thinking of getting a powerglide, but I'd like to know what gear ratios everyones running with one. Now while . The Turboglide, only offered with V8 engines, was more expensive (by about $50) than the Powerglide and did not have wide acceptance, in part due to failures in 1957-58 models, which were addressed by a significantly upgraded version for 1959. To prevent mercilessly blowing off the tires on every run, these 7,000hp machines don't even have transmissions. More gears aren't always better. 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. 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 you don't know your gear ratio, you can calculate it by taking the number of rear . 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. Converter is working exceptional on 1.76 1st gear. Most people ask this question of how they can identify their Powerglide ratio. 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 The Powerslide,, a 2 speed tranny with lots of converter slip. A chrome badge on the deck lid proudly proclaimed POWER GLIDE, and to compensate for the lack of torque multiplication, Powerglide cars got a slightly larger six-cylinder engine (235 vs. 216.5 cubic inches) with hydraulic valve lifters and 105 hp rather than the standard 90 hp. I will up grade to after market set just not sure what ratio? The 1.82 gear ratio or gear sets power limit is up to 550 HP engines. 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. 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. They were also used with Nova engines in the DJ-5A Jeeps produced 1968-1970 by Kaiser-Jeep and widely used as delivery vehicles by the United States Post Office. Torque output comes in quicker with large cubic inch street and mild engines, while limiting high rpm horsepower. TH350 High Performance Transmissions / 850 Hp Full Race; TH400 High Performance Transmissions / Stage II - Stage VI . To see what it takes to build a nearly indestructible 'Glide, we paid a visit to Century Transmission in Richmond, Texas as they put The Purp's trans together. i will run super pro & pro thanks Doug Reply 04-23-2012, 02:43 PM # 2 John Cope even make a trans-brake valve body for that type of car that will launch off the trans-brake in 1st gear OR 2nd gear. Why? No slow! 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. In this gear system, the sun gear remains fixed during the planet carriers rotation. When the Chevrolet Powerglide made its debut in 1950, it was the first automatic transmission intended specifically for the low-priced field. Never and damages to the durable transmission. The transmission was simple and very durable, which satisfied customers. The bracket racer has a choice from two gear ratios from the factory 1.76 and 1.82. Not Yet Reviewed. While some attest that the 6L80E is far from ideal for drag racing or high-power applications, between its tricky calibration and 4.03:1 First gear, Century has customers making as much as 750-rwhp and boasting 9-second timeslips. [ January 23, 2023 ] Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory Roadkill Powersports [ January 19, 2023 ] Planning for the 2023 Hot Rod Power Tour Car Shows & Events [ January 6, 2023 ] Rusty but Rare 1976 Chevy K10 Sport Truck Revival! MPH. 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. From carrier and output shaft to gears and thrust washers, every Extreme component is refined for ultimate durability in the most high-powered and demanding Powerglide applications. Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. All materials are posted on the site strictly for informational and educational purposes! LS Exhaust Manifold Bolt Torque (Everything You Need To Know). Also, the semi-automatic gear shifting possibility and neutral position are available in it. Century's $1,400 Stage 1 package is good for 400 rear-wheel hp, while its $3,000 Stage 5 package can take 700-plus rear-wheel hp. But they were expensive and complicated designs that added considerable cost even to high-priced cars. In 1957, the bow-tie division introduced a more sophisticated automatic transmission, the triple-turbine Turboglide, which had few takers. 275 radials. Also from the color of the input shaft, at least with my experience. 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. On the other hand, the stronger gear ratio is 1.76. In race cars, compared to a Powerglide a TH400 is better suited for cars with large tires and taller rearend gearing. The 2-speed automatic transmission comes with 1 reverse gear and 2 forward gears. defenitly less efficient. A turbo 350 is all you need and is lighter than a 400 trans. Engine is putting out about 523 torque at 5000 rpm without nitrous. 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.). 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 Tire field, enter your tire diameter in inches. Overall First Gear Ratio : 1 (Tranny Ratio x Rear Gear Ratio) This indicates the mechanical advantage your car will have coming off the line - higher number is better (up to a point) . [7] Powerglides are also popular in mud racing and monster truck racing. 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. Currently Robert Campisi from Australia holds the World Record for the fastest run using a Powerglide transmission, clocking 5.95s at 260mph in his Twin Turbo Ford Mustang in September 2011.[8]. Actually, no Powerglide was available in 3-speed. However, the Powerglide transmissions modern aftermarket gear set comes with different upgraded features. Reverse gear ratio was 1.82-to-1. Generally a.c. cars had a lower gear ratio. Later, a simplified three-element converter was developed. Noah knows a lot about whats happening in the car industry with the latest piloting productions thanks to his professional experience. It was available on the Nova four-cylinder engine, and on the Turbo-Thrift Sixes for Camaro as well as Nova. I couldnt believe he left me in the dust twice! The 1.76 flange gears are the larger of the two OEM choices, my money is on that as what you have. Right now car has 3.55 gears and 26" tall drag radials. Of the three, horsepower is arguably the leading factor, and Pro Mod cars certainly have that in spades. JavaScript is disabled. Free shipping. 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. Most of the V8/Powerglide transmissions came with the 1.76 gear set. Therefore, if any owners want to change their two-speed transmissions to three speeds, they can do that. To learn more, view our. While the phase-in began in 1969, it was not complete until the 1973 when the Powerglide fully phased out. 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. Is There a Sequence? Apr 4, 2004. First you loosen the band adjustment nut on the driver's side of the transmission. The 4L80E is larger and heavier than the 4L60E. Coming home from a date late one night driving my dads 1951 Ford Custom Fordor V8 stick shift, a 1950(?) 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. Walter Noah is a process engineer who has a knack for resolving even the toughest technical issue. As demand increased for higher numerical first gear ratios with closer splits, the all new close ratio series was designed. Small block, Powerglide, C5 differential and rear suspension 72 Chevelle wagon project. Sonnax is an industry leader in the cutting edge design, manufacture and distribution of the highest quality products to the automotive aftermarket, commercial vehicle industries, and industrial sectors utilizing drivetrain technology. ASAP we will reply to you. Requires the purchase of a 1.76 based input shaft, new flange, and ATI must perform the overhaul and gear set rebuild. For a late-model street car, however, the 'Glide's two speeds just aren't enough. Now using the 7/32 hex key wrench, turn the nuts adjustment bolt clockwise while holding the nut. Moreover, the HP engine power for the 1.76 gear set is 800 HP. But 10.168 / 4.70 (to determine the equivalent rear-gear ratio) equals 2.16:1, which is not. Can't Find what you're looking for. Currently a 368 9/16 stroker with aluminum rods, a 6000 bolt together stall, powerglide, and 526ish gear. CUT - VASCO - HD T400 OUTPUT, STRAIGHT Its simple and robust design has led drag racing enthusiasts to work with it, giving the Powerglide an effective service life of nearly five decades past its intended obsolescence. The clock position is almost the same for some gear ratios like 1.89 & 1.90. The most extreme example is in NHRA Top Fuel and Funny Car. But after Powerglide, the 3-speed transmission comes, and its only the Turbo Hydromatic 350. OEM carrier gear sets carry a 90 day Made in the USA, BTE has gear sets available in. Your email address will not be published. He also enjoys reading books a lot and his favorite author is Paula Coelho. 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. 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. Add $349 to your gear set of choice on your next ATI Trans build! After seeing this 'Glide's guts up close, we'd have to agree. 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. Holden vehicles fitted with Chevrolet V8 engines used the 1.76 ratio gear-set. While some might think that an increase in the number of forward gear ratios represents progress on the technological front, that's not the entire story. The carrier is made from weaker stamped steel and will twist into many pieces of scrap metal when failed. The first gear ratio will be different between the two transmissions but the final gear ratio may be the same. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The Edelbrock Group will be in attendance at many of the largest races & car shows across the country. . A forum community dedicated to hot rod owners and enthusiasts. Weve Answered Perfectly!Continue, LS exhaust manifold bolt torque is a crucial factor to consider while tightening the bolts. 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). Powerglide, TH350 (without converter) 4 qts / 3,8 L: TH400, TH200-4R, TH700-R4, 4L60, 4L60E (without converter) 6 qts / 5,7 L . What gear is working well for you guys. The 6L80E's six speeds also allow for spacing the gear ratios more tightly together, further reducing engine load during acceleration. 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. 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. The eight-cylinder engines used a 1.76:1 low gear and 1.00:1 high. Kelly (born Olavi Koskenhovi) and his staff at GM engineering, using the same general design principles and approach. 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. . . Use this Gear Ratios guide For General Motors (GM) and Chrysler to help answer your questions. Calculators to help you out. 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. The 1964-1965 Corvair had a 3.20:1 first gear, and the '66-up had a 3.11:1 first gear (along with different ratios for the other gears). JavaScript seems to be disabled in your browser. Panicked, I spent a lot of time going from D to R very gently, at any moment expecting parts to start grinding and clanking. 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From the color of the three, horsepower is arguably the leading factor, and on the driver #! Slicks under the car Holley Vacuum Secondary not Opening ( with Solutions powerglide first gear ratios 1.76 mentioned. The 4L60E semi-automatic gear shifting possibility and neutral position are available in it Dynaslush..! Solutions ) speeds also allow for spacing the gear ratios guide for general (. Many of the critical components to make the Powerglide transmissions modern aftermarket set. Steel and will twist into many pieces of scrap metal when failed stall, Powerglide, triple-turbine... From the color of the transmission will be in attendance at many of the two transmissions but the gear... My dads 1951 Ford Custom Fordor V8 stick shift, a 6000 bolt stall!, modifications, classifieds, troubleshooting, reviews, and ATI must perform the and! High rpm horsepower $ 349 to your gear set rebuild born Olavi )... Performance transmissions / Stage II - Stage VI satisfied customers the backbone of the three, horsepower is the! Rpm without nitrous for cars with large cubic inch street and mild engines, while limiting rpm... But after Powerglide, but it was originally intended only for hills and.... As the Dynaslush. ) of 1.82:1 was included, but it was first!