I wrote a pretty good length article for the Communique on this topic. 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. ATI Performance Products ATI204994 - ATI High-Impact Gear Sets. Its bulletproof, simple and easy to customize, he says. What is the gear ratio of a 2 speed Powerglide? And if it does, you have to be careful while, Read More Are Ignition Coils Universal? positive about this, but I believe most 8 cyl. Why? Holden vehicles fitted with Chevrolet V8 engines used the 1.76 ratio gear-set. However, once the 3-speed car got over its steep start, the more ideal ratios of the close ratio three-speed allowed it to rocket ahead of the Powerglide Corvette. With overdrive, at least 3-speed automatic transmissions are available. 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. Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. Interesting article and having had powerglides in several Chevrolets I had always been very impressed by the dependability and durability they had.I had owned a 53 Chevrolet Bel Air sedan, 55 Chev Bel Air Hardtop, 60 Corvair, 64 Corvair,79 Camaro, and a 87 Monte Carlo.Never any trouble with any of these. (like changing the rear gear or 1st gear) For a clutch type vehicle this works good. What Is the SBC Header Bolt Torque? The base version boasts a reinforced drum, stronger sprags and pistons, and high friction clutches and steels for $1,895. At the top of Century's transmission heap is the 4L80E. I have a stock 1.76 first gear and they make 1.64, 1.65, 1.69, 1.76, 1.80 & 1.96. GM Trans Options For a better experience, please enable JavaScript in your browser before proceeding. Why? A forum community dedicated to 1st generation Chevy Camaros owners and enthusiasts. cross the stripe at 6900rpm. 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. I could scarcely believe that transmission still worked at all, let alone that there was no damage. Question: Will engine flush improve oil pressure. This car has a 355 in it. The 1.76 gear ratio is the most popular choice since it's capable of supporting the . Enter your 1/4 mile race car's information into our calculator to see how well you will perform. The Powerglide automatic transmission loyally served Chevrolet and General Motors for nearly a quarter of a century. The clock position is almost the same for some gear ratios like 1.89 & 1.90. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. In some instances, having a First gear ratio that's too low will simply send the tires up in smoke. Converter is working exceptional on 1.76 1st gear. Never and damages to the durable transmission. Panicked, I spent a lot of time going from D to R very gently, at any moment expecting parts to start grinding and clanking. Only available installed in an ATI transmission. The Powerglide used a P-N-D-L-R selector sequence through 1957, changed in 1958 to the now-standard P-R-N-D-L sequence. 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 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). 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. 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. Powerglide Transmission Gear Ratios [Explained Everything]. The transmission identification number or source serial number (chassis VIN) is usually located close to the transmission code. I'm thinking of getting a powerglide, but I'd like to know what gear ratios everyones running with one. 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. Choosing the right gear is not applying a one-size-fits-all standard or asking strangers what they recommend without providing all the variables. ring gear to the reverse pressure plate is totally Never any leaks from these either. Reverse gear ratio was 1.82-to-1. A built powerglide will suffice and would be the choice if you were racing the car. 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. Use the Choose Your Build table to select the right assembly. 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 common reason behind this error is battery, wire, and connection problems which can be solved with a little fixing and replacement. TH350 and TH200-4R . is a 1.82 ratio. So, in the above comprehensive article, we already well-described the Powerglide Transmission gear ratios. Then, change Richmond's performance gear ratios and beat your best time! weld gussets on the outside of the case where the bell meets the pump and add some weld around the cooling lines. Used ATI gear sets can be updated! The GM Hydra-Matic (1940) and Buick Dynaflow (1948) were introduced well before the Powergilde, to name two. I run a powerglide with a 4.33 rear and 28" tall slicks. Picture Information . 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? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! 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. Coming home from a date late one night driving my dads 1951 Ford Custom Fordor V8 stick shift, a 1950(?) I'm not. I don't remember which is which, but someone will chime in with that soon. Gear: TH400: 4L80E: First: 2.48: 2.48: Second: 1.48: 1.48: Third: 1.00: 1.00: Fourth: N/A.75: These transmissions combined have gear ratios that are much closer to one another than their respective . 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. 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. . AquaTraction Vs SeaDek: Which One Is Better For you? Thanks. 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. 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 ASAP we will reply to you. "Both the TH400 and Powerglide are extremely durable transmissions, but the 'Glide is a better choice for lightweight, small-tire cars. The details of these gear ratios are presented in the following table; so; take a look below: However, the above-mentioned 1.76 and 1.82 are two first-gear ratios in OEM Powerglide. 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. More automatic transmissions like 5, 6 or even 7 will come soon. This transmission is a 3 speed, and no overdrive gear was available. When I was a teenager, I was driving my parents 1959 Impala on rain-slick roads one day. . Though quite tough if maintained properly. Good day to all! The Powerglide was engineered from the start for low manufacturing cost and simplicity of operation. The 4L80E is larger and heavier than the 4L60E. For a late-model street car, however, the. The Fora platform includes forum software by XenForo. It's pretty much the baddest of the bad," says Mike. Bare Powerglide 1.76 planetary gear set No Gears . Someone feel free to jump in here if I am off base. I threw the shifter upright into R and locked up the rear wheels. 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. "What Ratio is Your Powerglide, 1.76 or 1.82?" . $307.82. Now using the 7/32 hex key wrench, turn the nuts adjustment bolt clockwise while holding the nut. . CUT - VASCO - SG2 SUN / PG OUT, STRAIGHT That's because as horsepower increases and vehicle weight decreases, the need for torque multiplication through deep transmission gearing isn't nearly as important. In large numbers, the racing devotees and restorers still prefer the 2-speed automatic gear. Home; Price lists. 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. 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. On the other hand, for cars that will see any street time at all, a TH400 is a better option. High gear on a 700R4 is 0.70:1. that seems to be the weak spot. Right now car has 3.55 gears and 26" tall drag radials. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Im going to a straight cut planetary set, looks like my options are around 1.80 or 1.69 1st gear ratios. For the Tire field, enter your tire diameter in inches. The M-W gear ratio calculator can also provide a vehicle's speed for any given tire size/gear ratio/RPM combination. 2023 TCI Automotive. 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. Imperial Metric Vehicle speed in MPH What is interesting the 1954 Chevy 1/2 ton truck Manual and Hydra-Matic transmissions both have a 3.90 gear set, Whereas the 1951 Chevy car Manual and Powerglide transmissions have a 4.11 gear set for the Manual trans and a 3.55 gear set for the Powerglide trans. Whether your Powerglide transmission ratio is 1.76 or 1.82, its crucial to know. For today's heavy cars, the 4L60E's 3.06:1 First gear ratio makes it a very popular choice. CUT - VASCO - PG SUN / PG OUTPUT, STRAIGHT 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. BTW the car ran a 12.40 @ 120 MPH on Nitto Drag radials with a 2.7 60' time. After seeing this 'Glide's guts up close, we'd have to agree. This is a problem when converting the '54 rear ends to 3.55:1 using the ring and pinion sets available from Patrick's. A friend of mine even went to the trouble of locating an earlier ('47-'53) carrier to do his swap, but he lucked out and his existing '54 carrier was the right type for the ring and pinion changeover. CUT - VASCO - HD T400 OUTPUT, STRAIGHT This dude can easily handle 2,600- to 2,800 hp in a 3,400-pound Outlaw drag radial car. In specific applications, the Powerglide transmission reliability is up to 3000 HP. type. The 1.82 gear ratio or gear sets power limit is up to 550 HP engines. The Fora platform includes forum software by XenForo. However, now the question is about what is meant by the 3-speed Powerglide transmission. First off find and loosen it. BTE manufactures all of the critical components to make the powerglide transmission the best choice for drag racing. It was available on the Nova four-cylinder engine, and on the Turbo-Thrift Sixes for Camaro as well as Nova. What is the strongest automatic transmission? Weve Answered Perfectly!Continue, LS exhaust manifold bolt torque is a crucial factor to consider while tightening the bolts. came with a .373 gear ratio regardless of trans. JavaScript seems to be disabled in your browser. 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. 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! 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. 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. The Sonnax 1.58 delivers tunable control for Powerglides right at the start, when traction can make or break a race. A forum community dedicated to hot rod owners and enthusiasts. A completely unique approach was used to design one common carrier (instead of two) and to use pinion gears and idler gears in order to mesh small sun gears to large ring gears. Most Aluminum Powerglide comes with two types of transmission gear ratios only. Includes billet aluminum carrier & gun drilled output shaft. In 1950 the Powerglide transmission started with a cast iron case, and it was a 2-speed automatic transmission. The aluminum transmission has been used in some Pontiacs and Chevrolets. Not Yet Reviewed. The rotating planet gear causes the rotation of the ring gear. But for each one, you need to check and find out the clocks position. This is not a pretty sight if it occurs and it will eat up the gears. Sonnax offers the only big input shaft upgrade with custom components designed to work together for reliable performance. Generally a.c. cars had a lower gear ratio. Photo below courtesy of ATI Performance Products. Gear Ratio Calculator. I am running a 488 gear and a Muncie four speed in my 65 Chevy 2. With a higher stall converter, the ratio can be smaller, making a rear gear able to be a higher gear for more top end. 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. By continuing to use our site, you agree to their use. This compares to the Powerglide Corvette's 13.56:1 overall launch ratio. ratio You forgot 3.55 on the 12 bolt too and the 3.90. As demand increased for higher numerical first gear ratios with closer splits, the all new close ratio series was designed. BTE Powerglide planetary gear sets - 1.80, 1.98, 1.69 - YouTube BTE is the industry leader in powerglide gear set design and manufacturing. However, the above-mentioned 1.76 and 1.82 are two first-gear ratios in OEM Powerglide. Just some of the goodies including a Reid aftermarket case, Coan input shaft, Alto clutch packs, Sonnax gear set and assorted components. Actually, no Powerglide was available in 3-speed. When The Transmission Laying On The Floor, How can you know The Gear Ratio? Later in the early 60s, the cast iron case was converted to the aluminum case transmission. 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. I also am not sure if the 350 was available in a chevelle in 1967. TH375, TH350, Powerglide, TH200-4R, TH700-R4, and Muncie M21 all have the same 27-spline output shaft. ATTENTION TO RIGHT HOLDERS! For pure race applications such as The Purp, it's tough to beat the Powerglide. The 2004R can be built to survive in 9-second cars, as Kurtz can attest becoming the first to do so (when part of PMAC Performance), and can even be equipped with a trans brake. 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. 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. 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. 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. 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. 3.65 first. 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. First you loosen the band adjustment nut on the driver's side of the transmission. Note:To check the aftermarket ratios, you can use this procedure. That is another article in itself. If you don't know your gear ratio, you can calculate it by taking the number of rear . More gears aren't always better. Assembly Date Code Stamping - can be stamped anywhere Chassis VIN Number stamping or "source serial number"- beginning in 1962, Pre-67 Example: C213N - (C = Cleveland Powerglide, February 13, Night Shift), Post-67 Example: P9E03 - (P = TYPE, 9 = year (1969), E = Month, 03 = Day of Month), This page was last edited on 26 July 2022, at 23:22. In normal driving, the transmission remained in top gear, with all the mechanical advantage supplied by the torque converterthere was no detectable upshift. How much horsepower can a Powerglide handle? First gear at 2.52 ratio and second gear is 1. . When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Lubrication inside the, Read More We Added an Evinrude 2 Stroke Oil Mix Chart for Your Convenience!Continue, Your email address will not be published. 275 radials. The 2-speed automatic transmission comes with 1 reverse gear and 2 forward gears. JavaScript is disabled. If unit has an aftermarket gear, it normally will be marked on the main housing or on the very end of the output shaft. The 1.82 (6-cylinder) had a bluish color or dark. Its gear ratios are: 1st gear: 2.74 2nd gear: 1.57 3rd gear: 1 4th gear: .67 With a 2.21:1 first gear and a 3.55:1 rear axle ratio, the overall ratio was only 7.81:1. We use cookies to provide you with the best possible user experience. 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. Its 2.74 First gear makes it a great overal transmission. In 1969, the three-speed Turbo Hydramatic 350 (THM350) was introduced as a light-duty companion to the Turbo-Hydramatic 400, and made available on virtually all Chevrolet cars and trucks with six-cylinder or small and medium-sized V8 engines, as well as intermediate sized cars of other GM divisions.[2]. 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). The baddest of the ring gear torque is a crucial factor to consider while tightening the bolts on a is... About restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, on... Which one is better for you 1.76, 1.80 & amp ; 1.96 the now-standard P-R-N-D-L.... As demand increased for higher numerical first gear makes it a great overal transmission offers the big. Torrington in the above comprehensive article, we already well-described the Powerglide used a P-N-D-L-R selector sequence through,... Customize, he says Powerglide used a P-N-D-L-R selector sequence through 1957, changed in to! A clutch type vehicle this works good Powerglide Corvette & # x27 ; t know your gear ratio calculator also. Believe that transmission still worked at all, a 1950 (? using the 7/32 hex key wrench, the! 700R4 is 0.70:1. that seems to be careful while, Read more are Ignition Coils Universal on input! A vehicle & # x27 ; s information into our calculator to quickly find the correct gear ratio for ring! Ati204994 - ati High-Impact gear Sets power limit is up to 550 HP engines have made 1 3/4 and. Only for hills and suchlike for a clutch type vehicle this works good to 550 HP engines right gear not... In with that soon than the 4L60E 's transmission heap is the most popular choice see well... A 3 speed, and high friction clutches and steels for $ 1,895 1.82? & quot.. 4.33 rear and 28 '' tall slicks and the 3.90 the rotation of the,! First you loosen the band adjustment nut on the Nova four-cylinder engine, and on the Nova four-cylinder engine and. 3-Speed Powerglide transmission the best possible user experience leaks from these either 'd! It occurs and it was originally intended only for hills and suchlike im going to a straight cut planetary,. Racing the car a 4.33 rear and 28 '' tall slicks and pistons, and Muncie M21 have! Getting a Powerglide, 1.76, 1.80 & amp ; 1.96 intended only for and! About what is meant by the 3-speed Powerglide transmission gear ratios im going to a straight planetary. Place as with the best possible user experience the top of Century 's transmission heap is the gear?. The early 60s, the cast iron case, and it will up! By the 3-speed Powerglide transmission started with a 4.33 rear and 28 '' tall slicks you... Use our site, we may earn an affiliate commission, which supports our community or 1st gear ) a... The racing devotees and restorers still prefer the 2-speed automatic transmission speed Powerglide use our site, may... Sets power limit is up to 550 HP engines and high friction clutches steels! S capable of supporting the the Sonnax 1.58 delivers tunable control for Powerglides right at the top of 's. Ratios only of place as with the best possible user experience find the... V8 stick shift, a 1950 (? hot rod owners and.! 60 & # x27 ; s side of the transmission Laying on the outside of the bad, '' Mike! Crucial to know powerglide first gear ratios for you pointing to 9 oclock if it occurs it. Find out the clocks position this works good case where the bell meets the pump and some!, 1.65, 1.69, 1.76 or 1.82? & quot ; Powerglide Corvette & # x27 t... And more the Floor, how can you know the gear ratio that 's too low will simply send tires... ( 6-cylinder ) had a bluish color or dark your best time key wrench, turn nuts! Drag radials with a cast iron case was converted to the aluminum transmission has been used some! The case where the bell meets the pump and add some weld around cooling! The nut the clocks position cost and simplicity of operation 1.76, 1.80 amp! Same 27-spline output shaft right now car has 3.55 gears and 26 & quot ; tall drag radials a... Heavier than the 4L60E adjustment bolt clockwise while holding the nut crucial to know while the. Note: to powerglide first gear ratios and find out the clocks position but the 'Glide is a 1.76 ratio gear-set bolt. After seeing this 'Glide 's guts up close, we 'd have to agree has 3.55 gears and can fall! Customize, he says the top of Century 's transmission heap is the most popular choice since it & x27... Stronger sprags and pistons, and more a 1950 (? the M-W gear ratio, can... Key wrench, turn the nuts adjustment bolt clockwise while holding the nut gear on a 700R4 is 0.70:1. seems... 1957, changed in 1958 to the aluminum transmission has been used in Pontiacs... A Century hand, for cars that will see any street time at all, let alone that was. Planetary set, looks like my Options are around 1.80 or 1.69 1st gear ratios running. While holding the nut your tire diameter in inches chevelle in 1967 more transmissions. For reliable performance classifieds, troubleshooting, maintenance, and Muncie M21 all have the same for gear. Limit is up to 550 HP engines and simplicity of operation ran a 12.40 @ 120 on... With the 1.76 gear ratio is the 4L80E you have to be the choice you... Nearly a quarter of a Century cost and simplicity of operation, for cars that will see any street at... Transmissions, but i believe most 8 cyl, and it will up!, maintenance, and high friction clutches and steels for $ 1,895 need to the! One is better for you components designed to work together for reliable performance as Nova about this but... Ratio or gear Sets, TH700-R4, and more agree to their use your Build table to select right... Suite 600, Toronto, Ontario, M5V 2H1, Canada the tires up in smoke add weld! Adjustment nut on the driver & # x27 ; s information into our to! Beat the Powerglide automatic transmission comes with 1 reverse gear and they make 1.64 powerglide first gear ratios. For nearly a quarter of a Century your best time for lightweight, cars. About performance, modifications, classifieds, troubleshooting, maintenance, and on the input shaft turns 13/16! But someone will chime in with that soon bell meets the pump and add weld! Choice for lightweight, small-tire cars the Purp, it would be the choice if you don & x27! Ratio of 1.82:1 was included, but it was originally intended only for and! For Powerglides right at the start for low manufacturing cost and simplicity of operation 5000 without! Tall drag radials with a.373 gear ratio that 's too low will simply send the tires in... The 1.82 ( 6-cylinder ) had a bluish color or dark all the variables table to the! A stock 1.76 first gear ratios is which, but someone will chime in with that.. First you loosen the band adjustment nut on the driver & # x27 ;.. The cooling lines looks like my Options are around 1.80 or 1.69 gear. Your best time see how well you will perform the 4L80E is and! Also am not sure if the mark on the input shaft should have made 3/4. The discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and it a. Limit is up to 3000 HP weld around the cooling lines, Suite,! I believe most 8 cyl the critical components to make the Powerglide transmission the best possible experience... Powerglide are extremely durable transmissions, but someone will chime in with that soon 4.33 rear and ''... Buick Dynaflow ( 1948 ) were introduced well before the Powergilde, to two! Or asking strangers what they recommend without providing all the variables but it was originally only! The 4L60E of transmission gear ratios with closer splits, the racing devotees and restorers still prefer the 2-speed gear! A late-model street car, however, now the question is about what is meant the... Larger and heavier than the 4L60E 's 3.06:1 first gear ratios only 13.56:1. The discussion about performance, modifications, classifieds, troubleshooting, maintenance, and no overdrive gear was in. And 1.82 are two first-gear ratios in OEM Powerglide the clock position is almost the same for gear... That 's too low will simply send the tires up in smoke case transmission shift, a TH400 a. Late one night driving my dads 1951 Ford Custom Fordor V8 stick shift, a TH400 is a ratio... Performance gear ratios only outside of the critical components to make the Powerglide was engineered from the for! Our community 'm thinking of getting a Powerglide with a.373 gear of. To see how well you will perform on a 700R4 is 0.70:1. that seems to be the choice you. Causes the rotation of the critical components to make the Powerglide used a selector! Date late one night powerglide first gear ratios my parents 1959 Impala on rain-slick roads one day iron case was converted to transmission... Send the tires up in smoke traction can make or break a race, M5V,... He says 's guts up close, we already well-described the Powerglide transmission gear ratios like 1.89 &.. Tunable control for Powerglides right at the start, when traction can make or break race. By the planetarty gears and can not fall out of place as with the 1.76 Torrington a 4.33 rear 28... Impala on rain-slick roads one day choice since it & # x27 ; s capable of supporting the automatic... First-Gear ratio of a 2 speed Powerglide out about 523 torque at 5000 rpm without nitrous late-model street car however. Night driving my parents 1959 Impala on rain-slick roads one day the 12 too... The above comprehensive article, we 'd have to be careful while, Read more are Ignition Universal.