This compares to the Powerglide Corvette's 13.56:1 overall launch ratio. positive about this, but I believe most 8 cyl. The big difference is the first-gear ratio. Many Street Stocks, I.M.C.A. ATTENTION TO RIGHT HOLDERS! Limited quantities - available while supplies last. Torque output comes in quicker with large cubic inch street and mild engines, while limiting high rpm horsepower. Call or Email Us! 8.67 @ 156 mph and 5.55 1/8th. 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. originally a 3-speed. The input shafts are different lengths also. Is the Chevy 402 a Good Motor? Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. 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 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. 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. Therefore for maximum drag racing applications, the 1.82 setting is not perfect. Save yourself the headache and let us figure out your ring-and-pinion gear ratio! This "dream wheel" lets you plug in factors like tire diameter and desired RPM at the stripe to determine what gear ratio will get you there. Most of the V8/Powerglide transmissions came with the 1.76 gear set. If the mark on the input shaft turns 1 13/16 turns and is pointing towards 10 oclock, it would be a 1.82 ratio. Track-proven to 3,000 HP 1.58, 1.65, 1.69 & 1.80 Ratios Planetary assemblies come fully assembled with 300M output shaft and ring gears pre-drilled for the Sonnax stabilizer system Compatible with the Sonnax big shaft system to handle the most extreme horsepower Applies to planetary assembly kits only Choose Your Build 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. around 850ish hp, but will be higher in the future. This phenomenal level of durability will set you back about $3,800. They were introduced in Buicks and Cadillacs the previous year. The quadrant indicator on Torque-Drive cars was, Park-R-N-Hi-1st. If unit has an aftermarket gear, it normally will be marked on the main housing or on the very end of the output shaft. Meanwhile, the rear axle ratio was reduced from 4.11:1 to 3.55:1 to manage driveline noise and harshness. But the Powerglide was typicly used with around a 3.36:1.0 rear axle ratio back in the 1960s. Fearing the damage and wear that could result from this practice, GM engineers in 1953 provided an automated first-gear start and programmed upshift at up to 42 mph depending on load, and a throttle-controlled kick-down function as well. For today's heavy cars, the 4L60E's 3.06:1 First gear ratio makes it a very popular choice. The Edelbrock Group will be in attendance at many of the largest races & car shows across the country. Shim Kit, Powerglide Heavy Duty After seeing this 'Glide's guts up close, we'd have to agree. Gear ratios include 1.58, 1.68, 1.76, 1.90, 1.94, 1.98, 2.08, 2.18 Vasco gear sets. Be sure to ask about micro-polishing coating your gears for the ultimate performance advantage! 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. Torque-Drive was only offered on low-horsepower engines for Camaro and Nova. High gear on a 700R4 is 0.70:1. On the other hand, the stronger gear ratio is 1.76. Most of the V8/Powerglide transmissions came with the 1.76 gear set. Powerglides were used extensively on Pontiacs produced for the Canadian market with Chevrolet powertrains. 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. Now while . . As a result, the unit was quite heavy at better than 240 lbs, and there were a number of gasketed joints with the potential for fluid leaks. Bare Powerglide 1.76 planetary gear set No Gears . The heart of the first-generation Powerglide was its torque converter (above). At 350 hp you should not hurt a turbo 350. 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. Given the final axle ratio of 3.08:1 in each car, the overall ratio drops to 2.156:1. The 1.76 (8-cylinder) has a silver color due to it being fully machined. In fact, a Powerglide can weigh less than a standard manual transmission, provide a direct-drive feel with minimal slippage at the torque converter (or none at all with direct drive), and maintain a relatively low rotating mass. Compare this to a TH350. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! SUPERSET - ALUMINUM REVERSE RING GEAR FOR 3 REVERSE CLUTCHES, 1.76 GEARS WITH NEW 4340 BOLT-TOGETHER OUTPUT & CARRIER with 1.76 OEM flange & reverse And this gear set features heavier-duty gears and a machined steel carrier. The GM Hydra-Matic (1940) and Buick Dynaflow (1948) were introduced well before the Powergilde, to name two. The Powerglide is a two-speed automatic transmission designed by General Motors. The gear ratios used for this transmission were 2.52 for 1st gear . Ron Most likely I have a 1.82 It's actually 1.76 and 1.82, I've been surfing the net and found this; There are two ways without taking it completely apart.The input shaft can be pulled out and measured. The 6L80E's six speeds also allow for spacing the gear ratios more tightly together, further reducing engine load during acceleration. Is the Chevy 402 a Good Motor, Or is it a Waste? Robs power and burns up fuel. 275 radials. Forget about the hassle and expense of changing to a TH400 for a lower ratio, the 1.58 in an efficient, lightweight Powerglide delivers the very best in performance and durability. I thing drag racers love them as they have ONE gearchange per run. I'm not. The 4L80E is larger and heavier than the 4L60E. Come join the discussion about performance, builds, restoration, modifications, classifieds, troubleshooting, reviews, and more! 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. The Torrington in the 1.82 gearset is captured by the planetarty gears and cannot fall out of place as with the 1.76 Torrington. I would say with a glide you have 2.73 or 3.07 ratio. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. my car is 2450# with a sbc 434, powerglide, 5000 stall, rear is 4.56 tires are 32.5, runs 9.30's @ 145. 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. Estimated Ship Date: May 31, 2022 if ordered today. Estimated Ship Date: May 31, 2022 if ordered today. The Powerglide lingered on as a low-cost automatic transmission option primarily for the six-cylinder Chevrolet Nova and four-cylinder Chevrolet Vega until it was phased out after the 1973 model year, replaced by the Turbo Hydramatic 250. This option adds rigidity and strength to your gear set and reduces overall weight by 1/2 lb! Part Number: SOX-28180G-01. that seems to be the weak spot. CUT - VASCO - HD T400 OUTPUT, STRAIGHT To know the ratio, follow the steps below: Step 1:A band adjustment nut is available on the driver sides transmission. 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. Automatic Transmission Gears, Planetary Gear Sets, 1.80:1 First Gear Ratio, 1.00:1 Second Gear, Long Style 27-spline Output Shaft, GM, Powerglide, Kit Part Number: FTI-F2540L Not Yet Reviewed Im going to a straight cut planetary set, looks like my options are around 1.80 or 1.69 1st gear ratios. TSI has pioneered much of the technology that is now commonplace in the transmission marketplace. . Your email address will not be published. CUT - VASCO - PG SUN / PG OUTPUT, STRAIGHT 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. CUT - VASCO, STRAIGHT This is not a pretty sight if it occurs and it will eat up the gears. It is a 1.76 as mentioned, since the 1.82 has 23 teeth on the flange gear. How Do You Identify The 2 Speed Powerglide Gear Ratios? The 1.76 flange gears are the larger of the two OEM choices, my money is on that as what you have. Need help finding what you are looking for? Powerglides also weigh 30-40 pounds less than a TH400, and take less power to turn, which means more horsepower makes it to the rear wheels," explains Mike Kurtz of Century Transmission. 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 . Its gear ratios are: 1st gear: 2.74 2nd gear: 1.57 3rd gear: 1 4th gear: .67 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. General Motors transmissions have markings to identify; Prior to 1967, transmission ID numbers contained the plant prefix code, month and date of production (expressed numerically) and a shift code (D = Day, N = Night). 1 - 12 of 14 items. Now, for the 1.76 ratio, 1 turns should have been made by the mark on the input shaft. First gear at 2.52 ratio and second gear is 1. . Cars, like everything else, tend to break down. The Turbo 400 transmission has a first gear of 2.48:1 and second . Powerglide Planetary Gear Sets by FTI Performance. And its durability allows it to run 100 to 150 races before needing a rebuilding that takes only two hours, Coughlin says. The input shafts are different lengths also. 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. The constants in decoding the trans ID number are the date the transmission was produced. It was a 6 cyl. Corvair Powerglide, using the basic design principles of Powerglide was optional in the rear-engined, air-cooled, horizontally opposed six-cylinder Corvair compact, available for all years of its production (196069). I think you are probably looking in the 3.08 (non-a.c.) to 3.36 (a.c.) range. 3.55 rear gear. The Fora platform includes forum software by XenForo. 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. 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. JavaScript seems to be disabled in your browser. I am thinking about going to 28" tall slicks under the car. 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. Most Aluminum Powerglide comes with two types of transmission gear ratios only. 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. Many Powerglides share the same length, 27 spline output shaft, and transmission mounting as the THM 350; thus, the transmissions are easily interchangeable for owners wanting three speeds instead of two. 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. 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. First Steps. TH375, TH350, Powerglide, TH200-4R, TH700-R4, and Muncie M21 all have the same 27-spline output shaft. 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. Save my name, email, and website in this browser for the next time I comment. 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. But still, it is a popular option for car racers and restorers. 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. This car has a 355 in it. Chevrolet Bel Air hardtop with Powerglide pulled up next to me at a red light. Why? 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. Powerglide transmissions were cast with the word Powerglide along the body. From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below) and a shift code. TCM- Transmission Control Module Location (Everything You Need To Know About It), Transmission Hot Wait 5 Minutes Meaning with Detailing Guide, 4l80e Transmission Interchange Chart [Explained with Data], Everything You Should Know About Chevy 4l60e Transmission Compatibility, 700r4 Transmission Governor Problems: 3 Issues with Fixes. For a late-model street car, however, the. In these types of applications, a Powerglide is the ultimate in consistency as well. My dad would have skinned me. The 2-speed automatic transmission comes with 1 reverse gear and 2 forward gears. Chevrolet transmission information - dimensions, gear ratios and oil quantity. 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. 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. Granted that The Purp is no Funny Car, but the same concept applies. The 6L90 is the strongest of GMs family of Hydra-Matic six-speed automatic transmissions. When The Transmission Laying On The Floor, How can you know The 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. Required fields are marked *. OEM carrier gear sets carry a 90 day Panicked, I spent a lot of time going from D to R very gently, at any moment expecting parts to start grinding and clanking. 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 The transmission identification number or source serial number (chassis VIN) is usually located close to the transmission code. One of the best perks about owning a late-model GM performance machine--besides having enough horsepower to eat Mod motors and poop out Hemis--is the vast selection of outstanding automatic transmissions at our disposal. The Powerslide,, a 2 speed tranny with lots of converter slip. Are you looking TCI Auto Gear Ratios? Jon N. ~ The person who doesn't listen to the media is the best informed. Home; Price lists. A forum community dedicated to hot rod owners and enthusiasts. Used ATI gear sets can be updated! [ (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.)] The transmission was produced gearset is captured by the planetarty gears and can not fall out of place as the... Quicker with large cubic inch street and mild engines, while limiting rpm... 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No Funny car, the overall ratio drops to 2.156:1 a glide you have 2.73 3.07... Torque output comes in quicker with large cubic inch street and mild engines, limiting! 1.82 has 23 teeth on the other hand, the overall ratio drops to 2.156:1 community dedicated hot... 1.82 ratio offered on low-horsepower engines for Camaro and Nova that provided torque! As mentioned, since the 1.82 has 23 teeth on the Floor, how can you know the ratio. Would be a 1.82 ratio 2022 if ordered today th375, TH350, Powerglide, TH200-4R TH700-R4. The ID number contained the transmission Laying on the other hand, the 4L60E it to run 100 150! 100 to 150 races before needing a rebuilding that takes only two hours, Coughlin says have the concept. Powerglide was its torque converter ( above ) 13.56:1 overall launch ratio two hours, says! Sight if it occurs and it will eat up the gears should have been made the! Most of the first-generation Powerglide was its torque converter ( above ) love them as have! We 'd have to agree for today 's heavy cars, the stronger gear ratio out of place as the! We 'd have to agree further reducing engine load during acceleration cast with the 1.76 Torrington ratio in... Quicker with large cubic inch street and mild engines, while limiting high rpm horsepower the larger of first-generation. Previous year Torrington in the 1.82 gearset is captured by the planetarty gears and can not fall of! Set you back about $ 3,800 torque multiplication factor of 2.20:1 about this, but the Powerglide was typicly with... Applications, the ID number contained the transmission type or plant prefix Date... The strongest of GMs family of Hydra-Matic six-speed automatic transmissions 4L80E is larger and heavier the. To it being fully machined 1/2 lb 3.08 ( non-a.c. ) to 3.36 ( a.c. ).. Hp, but will be higher in the future of transmission gear ratios ). 400 transmission has a 4.03:1 First gear ratio engines for Camaro and Nova choices, money. The 1960s reduces overall weight by 1/2 lb noise and harshness per run from 4.11:1 3.55:1... Same 27-spline output shaft Purp is no Funny car, but will be higher in the future hp! - dimensions, gear ratios to 2.156:1 Coughlin says and pinion gear set trans ID contained. Was only offered on low-horsepower engines for Camaro and Nova a rebuilding that takes only two hours, Coughlin.. The 2-speed automatic transmission comes with 1 reverse gear and 2 forward gears a new Camaro two... Racers love them as they have ONE gearchange per run it 's hardly a coincidence that its six-speed... Everything else, tend to break down that its 6L80E six-speed has First. Two hours, Coughlin says it 's hardly a coincidence that its 6L80E six-speed has silver... The 2 Speed tranny with lots of converter slip who does n't listen to media. After seeing this 'Glide 's guts up close, we 'd have to agree the ultimate in as. And enthusiasts Identify the 2 Speed tranny with lots of converter slip gear set trans ID number the... Love them as they have ONE gearchange per run to 3.36 ( a.c. range. Spacing the gear ratio allows it to run 100 to 150 races before needing a that. Have made 1 3/4 turns and be pointing to 9 oclock if it is a popular for! M5V 2H1, Canada comes with 1 reverse gear and 2 forward gears STRAIGHT...