The heart of the first-generation Powerglide was its torque converter (above). The aluminum transmission has been used in some Pontiacs and Chevrolets. If the planetary carrier looks like it is made of stamped steel (rounded off rear area) it's a 1.82. 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. High gear on a 700R4 is 0.70:1. 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. The Chrysler TorqueFlite A-727 (better known as just the 727) is to this day one of the strongest automatic transmissions ever built. 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]. Much like the small-block Chevy V8, the Powerglide has been completely re-engineered for racing use, and you can assemble an entire transmission using upgraded aftermarket parts, from the case to the oil pan. Conversely, race cars are far different animals than a typical production car. What is the gear ratio of a 2 speed 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. High-quality materials combined with an advanced heat-treating process results in incredibly tough, wear-resistant gears. But since the powerglides have such a low first gear with only 3.73 rear ratio, would it just suck to be running this setup, or would it be alright? But still, it is a popular option for car racers and restorers. 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 learn more, view our 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. Powerglides were used extensively on Pontiacs produced for the Canadian market with Chevrolet powertrains. 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. The Powerglide has just two speeds: low and high. I also am not sure if the 350 was available in a chevelle in 1967. Why? Its bulletproof, simple and easy to customize, he says. TH350 High Performance Transmissions / 850 Hp Full Race; TH400 High Performance Transmissions / Stage II - Stage VI . At $4,875, this race-prepped Glide costs more than your average 4L60E rebuild, but this is no ordinary transmission. If you run a turbo shaft in the 'glide and use the same converter, it might not flash quite as high as in the turbo due to the torque multiplication differential between the trannies due to the previously mentioned gear ratio difference, but it should be pretty close and probably work in much the same way as you described. BTE manufactures all of the critical components to make the powerglide transmission the best choice for drag racing. By continuing to use our site, you agree to their use. TH350 and TH200-4R . First Steps. On the other hand, for cars that will see any street time at all, a TH400 is a better option. Hotrodding is much more than just owning a hotrodIt is a state of mind! 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. Someone feel free to jump in here if I am off base. CUT - VASCO - HD T400 OUTPUT - LIGHT, All 8 gears are new - long and short pinions, sun & flange gear, Each gear made of high quality Vasco steel, Recommended for engines with a stroke of 3.5 or less, Super strong lightweight ring gears in steel or aluminum, All thrust loading in the Powerglide from the reverse These gears are based on the lightweight OEM 6 cylinder planetaries. Weve Answered Perfectly! This is not a pretty sight if it occurs and it will eat up the gears. Make sure you turn the adjustment bolt tightly. Bare Powerglide 1.76 planetary gear set No Gears . Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Come join the discussion about performance, builds, restoration, modifications, classifieds, troubleshooting, reviews, and more! Early models were air cooled, and later 60's versions used a fluid cooler in the radiator. We use cookies to provide you with the best possible user experience. What is the gear ratio of a 2 speed Powerglide? How much horsepower can a Powerglide handle? For a late-model street car, however, the. The transmission identification number or source serial number (chassis VIN) is usually located close to the transmission code. I couldnt believe he left me in the dust twice! Here is a down-and-dirty way of picking the best gearing for a particular car from three choices: 3.07:1 final drive with a wide-ratio transmission, a 3.07:1 final drive with a close-ratio transmission, and a 3.36:1 final drive with a close-ratio transmission. But they were expensive and complicated designs that added considerable cost even to high-priced cars. Duck for cover! 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. 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. A forum community dedicated to all Chevy Nova, Chevy II, Acadian owners and enthusiasts. Learn About Sonnax Heavy Duty & High Performance, See All Heavy Duty & High Performance Upgrades, Planetary assemblies come fully assembled with 4340 output shaft, Planetary assemblies come fully assembled with 300M output shaft and ring gears pre-drilled for the Sonnax stabilizer system, Push the limits while going faster than ever, Compatible with the Sonnax big shaft system. Usually, Powerglides were coupled behind the small block V8s such as the 283 ci engine, and the third-generation inline six-cylinder engine and inline four-cylinder engines. The input shafts are different lengths also. It was a 6 cyl. More gears aren't always better. 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. Right now car has 3.55 gears and 26" tall drag radials. 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. I had an experience of clipping along at expressway speed in the 60 Corvair when my very young son decided that he wanted to move the shift lever on the dashboard and put the car in reverse,it locked the drive wheels and I flipped it back into drive as soon as it happened, never any problem with the transmission following, Similar to that was when having the 55 Hardtop and now and then as Id pull the shifter into reverse thinking I was putting it into low and the same locking up effect occurred. It keeps the car running pretty much but also tends to fail. cross the stripe at 6900rpm. Cookie Policy. 24-Tooth flange Premium and Extreme gear sets/assemblies and 32-spline output shaft available upon request. First gear at 2.52 ratio and second gear is 1. . Now, for the 1.76 ratio, 1 turns should have been made by the mark on the input shaft. positive about this, but I believe most 8 cyl. Actually, no Powerglide was available in 3-speed. 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 LS Exhaust Manifold Bolt Torque (Everything You Need To Know). 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. . It is also possible to purchase all the parts needed to build an Aluminium Powerglide from scratch from most racing parts vendors. I'm not. is a 1.82 ratio. Access Drag Performance Calculator. Also from the color of the input shaft, at least with my experience. Granted that The Purp is no Funny Car, but the same concept applies. They were introduced in Buicks and Cadillacs the previous year. SUPER SET, STRAIGHT This is what we will try to figure out. Used ATI gear sets can be updated! To learn more, view our. The tranny is apart how can I tell the ratio. This calculator will help your hot rod or street machine get to the next level without red-lining your engine. Eight-cylinders had a 1.76:1 reverse gear ratio. 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. 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. 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. 8.67 @ 156 mph and 5.55 1/8th. Automatic Transmission Gears, Premium, Planetary Type, Steel, 1.80:1 First Gear Ratio, GM, Powerglide, Kit. If the planetary carrier looks like it's machined (squared off rear area) it's a 1.76. Use this Gear Ratios guide For General Motors (GM) and Chrysler to help answer your questions. The clock position is almost the same for some gear ratios like 1.89 & 1.90. Its more hefty build can be tied to its 236 lbs and a length of 26.4. 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. The Turbo 400 transmission has a first gear of 2.48:1 and second . For Turbo Buick, other G-body and '80s Caprice owners (not to mention retrofits), Century offers beefed up a 2004R rated from 450 to 1,000+ rear-wheel hp. The Powerglide is a two-speed automatic transmission designed by General Motors. 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. The reverse gear ratio was 1.76-to-1. In this gear system, the sun gear remains fixed during the planet carriers rotation. A heavy duty version of Aluminium Powerglide was offered for passenger cars equipped with the 409 cubic inch V8 engine, and Chevrolet light trucks using a 1.76:1 reduction planetary gear set, instead of the usual 1.82:1. Nichols from Hughes says, The 4L80E transmission family is the strongest GM overdrive transmission ever produced and installed in a standard passenger vehicle platform, and is arguably the strongest overdrive transmission produced by any of the big three. [ 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! I never tried that again. 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. When The Transmission Laying On The Floor, How can you know The Gear Ratio? There were two primary types or versions of the Powerglide: the Powerglide transmission introduced in 1950 had a cast iron case and is known as the "Cast Iron Powerglide", used until 1963, when it was revamped as "Aluminium Powerglide" where its case and several of its other parts were made of aluminium. The Camaro below, driven by Chris Rini and sponsored by ATI, a leading supplier of performance Powerglides and components, runs the quarter-mile in six seconds flat at 235 mph. 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. For over 40 years Transmission Specialties has been the trusted name in the performance automatic transmission industry. TH400 has a 32-spline output shaft. I wrote a pretty good length article for the Communique on this topic. 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The Canadian market with Chevrolet powertrains output shaft available upon request the aluminum transmission has been used in Pontiacs! Performance automatic transmission gears, Premium, planetary Type, steel, 1.80:1 first gear,... Forum community dedicated to all Chevy Nova, Chevy II, Acadian owners enthusiasts! This is what we will try to figure out site, you to... Its bulletproof, simple and easy to customize, he says,,!, and more a 1.82 all, a TH400 is a better.! Tell the ratio, steel, 1.80:1 first gear at 2.52 powerglide first gear ratios and second steel, 1.80:1 first gear 2.52! A typical production car 26 & quot ; tall drag radials carriers rotation Acadian owners and.! Its 236 lbs and a length of 26.4 above ), simple and easy to customize he! And easy to customize, he says from scratch from most racing parts vendors shaft! Right now car has 3.55 gears and 26 & quot ; tall radials!