Now, if you have any other queries, comment. I am running a 488 gear and a Muncie four speed in my 65 Chevy 2. The Chrysler TorqueFlite A-727 (better known as just the 727) is to this day one of the strongest automatic transmissions ever built. Hotrodding is much more than just owning a hotrodIt is a state of mind! It was available on the Nova four-cylinder engine, and on the Turbo-Thrift Sixes for Camaro as well as Nova. Imperial Metric Vehicle speed in MPH 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. . 3.55 rear gear. The gear ratios used for this transmission were 2.52 for 1st gear . Our example is going to assume a 6000 rpm redline and 26-inch-diameter tires. Enter your 1/4 mile race car's information into our calculator to see how well you will perform. By the late 1960s, demand for two-speed automatic transmissions was dwindling as buyers were demanding three-speed units (Ford, Chrysler and American Motors had already switched entirely to three-speed automatics by this time). The 6L80E's six speeds also allow for spacing the gear ratios more tightly together, further reducing engine load during acceleration. If the planetary carrier looks like it's machined (squared off rear area) it's a 1.76. Most of the V8/Powerglide transmissions came with the 1.76 gear set. Also, the semi-automatic gear shifting possibility and neutral position are available in it. The heart of the first-generation Powerglide was its torque converter (above). To learn more, view our. Considering that a new Camaro weighs two tons, it's hardly a coincidence that its 6L80E six-speed has a 4.03:1 First gear ratio. Converter is working exceptional on 1.76 1st gear. Noah knows a lot about whats happening in the car industry with the latest piloting productions thanks to his professional experience. The starting-line ratio is a combination of the first-gear transmission ratio multiplied by the rear-end gear ratio. No slow! Panicked, I spent a lot of time going from D to R very gently, at any moment expecting parts to start grinding and clanking. 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 could leave it in low gear and never lose the revs in the quarter mile. eliminated. my car is 2450# with a sbc 434, powerglide, 5000 stall, rear is 4.56 tires are 32.5, runs 9.30's @ 145. I am thinking about going to 28" tall slicks under the car. 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 (!) When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Conversely, race cars are far different animals than a typical production car. Are Ignition Coils Universal? 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. Also, the input shafts mark should point to 9 oclock. We use cookies to provide you with the best possible user experience. CUT - VASCO - PG SUN / PG OUTPUT, STRAIGHT Too much torque leads to bolt snapping or breakage of the cast iron, while less-torque leaves gaps for exhaust gas, Read More LS Exhaust Manifold Bolt Torque (Everything You Need To Know)Continue, Why is there a chassis control system error on Nissan Rogue? The 4L80E has an overdrive gear with a ratio of 0.75:1. That is another article in itself. 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. In 1957, the bow-tie division introduced a more sophisticated automatic transmission, the triple-turbine Turboglide, which had few takers. 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. With a higher stall converter, the ratio can be smaller, making a rear gear able to be a higher gear for more top end. The transmission was simple and very durable, which satisfied customers. In the first few years after introduction, they became known as the "Slip-N-Slide Powerglide", due to the fluid coupling, as opposed to the mechanical coupling of a clutch-driven gearbox, and the "Positive-Pop transmission". A forum community dedicated to 1st generation Chevy Camaros owners and enthusiasts. The eight-cylinder engines used a 1.76:1 low gear and 1.00:1 high. The quadrant indicator on Torque-Drive cars was, Park-R-N-Hi-1st. What gear is working well for you guys. "This dude can easily handle 2,600- to 2,800 hp in a 3,400-pound Outlaw drag radial car. 275 radials. Some racing automatics, the torque converter has an effect on the ratio. I will up grade to after market set just not sure what ratio? JavaScript is disabled. Be sure to ask about micro-polishing coating your gears for the ultimate performance advantage! Pontiac 326 Vs Chevy 327 Differences & Similarities. 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. Holden vehicles fitted with Chevrolet V8 engines used the 1.76 ratio gear-set. 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. High-quality materials combined with an advanced heat-treating process results in incredibly tough, wear-resistant gears. Therefore, if any owners want to change their two-speed transmissions to three speeds, they can do that. While the Powerglide couldnt be called refined, it was inexpensive and reliable, and by the mid-50s more than half the Chevrolet buyers were opting for the automatic. 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. 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. positive about this, but I believe most 8 cyl. 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. For the most part, series numbers can be determined by your gear ratio, with 2.73 and lower rearend gear ratios falling in the 2-Series, 3.08 to 3.90 rearend gear ratios falling in the 3-Series, and 4.10 and higher rearend gear ratios falling in the 4-Series. Engine is putting out about 523 torque at 5000 rpm without nitrous. The big difference is the first-gear ratio. The Powerglide automatic transmission loyally served Chevrolet and General Motors for nearly a quarter of a century. Make sure you turn the adjustment bolt tightly. The clock position is almost the same for some gear ratios like 1.89 & 1.90. 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 Powerglide is a two-speed automatic transmission designed by General Motors. Given their bulletproof nature, there will probably be Powerglides in drag racing forever. Powerglide Planetary Gear Sets and Parts. I don't remember which is which, but someone will chime in with that soon. Powerglide transmissions were cast with the word Powerglide along the body. But as stated you will need to axle code 2-3 letter suffix code or you can open the rear and check the pinion head it will also have the ratio stamped into it by listing the ring tooth count and the pinion tooth count and part number of the pinion gear plus the date usually. quality of work warranty. 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. My dad would have skinned me. GM Trans Options 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. . Never any leaks from these either. In race cars, compared to a Powerglide a TH400 is better suited for cars with large tires and taller rearend gearing. When The Transmission Laying On The Floor, How can you know The Gear Ratio? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. For the best experience on our site, be sure to turn on Javascript in your browser. And so that the car does not fail, it must be serviced, and for this you need to know what and when to do. On the contrary, while the mark on the input shaft point towards 10 oclock by taking turns of 1 13/16, it indicates your Powerglide transmission gears 1.82 ratios. 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. The powerglide should be fine with the 350 unless it is an air cooled version. 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 Aluminium Powerglide is still used today as a racing transmission of choice by many racers mainly for the fact that it only shifts once, and for its extreme durability. Estimated Ship Date: May 31, 2022 if ordered today. Chassis Control System Error: What Causes This Problem And How To Fix It? Different-ratio first-gear sets are now available (through TCI Automotive, JW Performance Transmissions, and others) for the Powerglide transmission. "Both the TH400 and Powerglide are extremely durable transmissions, but the 'Glide is a better choice for lightweight, small-tire cars. The base version boasts a reinforced drum, stronger sprags and pistons, and high friction clutches and steels for $1,895. The Turbo 400 transmission has a first gear of 2.48:1 and second . Beyond that, the 'Glides reach a limit in terms of horsepower due to their design. We offer a variety of gear ratios, input shafts, clutch drums, roller components, and other items to custom fit almost any high performance vehicle. Automatics, the & # x27 ; s information into our calculator to see How well you perform. 1/4 mile race car & # x27 ; s information into our calculator see! Powerglide a TH400 is better suited for cars with large tires and taller rearend gearing purchase through links on site! The gear ratios more tightly together, further reducing engine load during.... 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