Th350 Gear Ratio

07rear driven 6 YR now changed back to 85 monte carlo SS 305 Motor as of 2004, june,30 inter changed to 84 GMC style, flatbed with a 98 van bumper. Ford F-150,F-250 , F-350. Compare this to a TH350. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the driven gear (round to the nearest available gear):. The good news is that either way, you win. Enter the rear tire diameter Or use the tire selector above. 52 6 inch Tailshaft Dual piston apply feature on 2/3 shift to increase torque Torque converters available BOP BUICK, OLDS, PONTIAC /// ALSO AVAILABLE \\\ TH350 9 INCH SHAFT TH350 4X4 TH350 6 INCH SHAFT TH350 RAT ROD TH700R4 transmission transmissions 350 thm350 hot rod high performance street and strip. 57 Ratio Second Gear Planetary Kit; TCI Chevrolet 5. These street/strip transmissions are exact bolt-in replacements for your stock transmission and have all of the heavy-duty features described above. If these 2 steps are not followed, the sizing chart will print to the wrong scale and you will not be able to acquire the correct size you need. 07 first gear, as opposed to a 2. These examples don't take into account any torque multiplication may be occurring through the torque converter, they are just to illustrate the numerical gear multiplication. Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. A very easy job in about 30 minutes of time. 52 for 1st gear, 1. I have a 70 half ton c 10 with the original 6cyl (250) and three speed tranny. 48, roller bearings throughout, high pressure pro brake valve body, seven clutch forward and direct drum pack, five clutch intermediate pack, oversized intermediate sprag element and outer race, billet steel forward clutch hub, deep aluminum pan, trimmed case for clearance. What factory rear gear ratios were offered for this truck and does this rear end have a specific name? It has a 307 w/th350 transmission. 08 and muliply by 20. Early attempts to change the ratios in the Turbo 400 centered around borrowing components from other OE transmissions, such as the TH200 and TH350. Gearing Calculator Here is a gear calculator you may find very helpful. Turbo 350 Performance Specs. Here’s what I have: 350 Turbo 3 speed transmission 350 Small block bored 0. BTE TH350 2. Using Drag Strip Analyzer my best gearing worked out using a stock geared th350 and a 4. 23 because it is harder to get the car going with the 3. Another car is using 2. Largest Main Shaft in the Industry. 84 Ratio Revenger is Great for Overdrive Conversions in Hot Rods and Muscle Car's. The Gear Ring is based on US/Canadian measurements. Please contact us if you need help calculating the proper gear set for your TH350. ) Tire Height - In Inches, Use The Gear Calculator or Tire Size Calculator Speedo Revs/Mile - Number of RPM the speedometer needs to turn at 60mph You can hit the SAMPLE button to see how some typical calculations will look. , SM420, SM465, TH350, etc. 7 would lead you to believe (I'm starting to regret my choice of. Here for sale is a Gearvendor overdrive system 1. Transmissions after this period have a higher 5. Differences Between a TH350 & a 700R4 Transmission by Michael Gunderson The TH350, also known as THM350, Turbo Hydramatic 350, or Turbo 350, is a three-speed, automatic shift transmission developed by Chevy and Buick and introduced in 1969. 73, but not exactly. These street/strip transmissions are exact bolt-in replacements for your stock transmission and have all of the heavy-duty features described above. 1-2 electric shift option for computer. 1 MOPAR automatic transmission gear ratios, 4. 23 rear diff ratio with a GV installed to get close to the highway rpm's I get now. 73 rear gears and stock tires, which are approx 26" diameter. I am trying to calculate the first gear ratio of a compound Simpson gear set. 48 first, 1. Early attempts to change the ratios in the Turbo 400 centered around borrowing components from other OE transmissions, such as the TH200 and TH350. THE VETTE NET - YOUR MODERN SOLUTION FOR ALL CORVETTE NEEDS. The front accomplishes 1. Looking in the chart, I find the closest match (using a small drive gear and tailhousing) is an 8-tooth tailshaft gear and a 24-tooth speedometer drive gear. Multiple Gear Ratios • Individual gear ratios can be multiplied to calculate a total gear ratio – Example: Chevy caprice with a TH-350 transmission and a 305 engine • By removing the differential cover and inspecting the gearset you are able to count 10 teeth on the input gear and 41 teeth on the output gear • 41 ÷ 10 = 4. 90 to 1 ratio, that was common for the 2 speed automatic. 67-72 RPO Codes (Regular production options) This list is exclusive to 67-72 chevy and GMC trucks but if you find that an option is missing drop me a line and I will get it added. i'm just looking for gear that will run me down the 1320 quickly and a street friendly stall. by Michael Dickens The New Venture Gear 3500, a medium duty five-speed overdrive manual transmission manufactured by New Venture Gear, was used in General Motors and Dodge compact and full-size light trucks. Haven't found Saginaw online? Discover Saginaw on sale right here with the largest option of Saginaw anywhere online. In addition to the ring and pinion gear ratio in the axles you may consider other options for your transfer case and transmission. The TH700R-4 was the first overdrive automatic transmission used in GM cars and trucks in 1982, designated as a Hydra-Matic MD-8 transmission according to GM’s RPO codes. The Gear Vendors offers a 22-percent overdrive, or the equivalent of converting a 3. HM290 NV3500 Cluster, Long Rev Gear Getrag 290 1/4" Groove HM290 NV3500 Clutch Fork Pivot Ball Getrag (LUK# LAC152) HM290 NV3500 Dodge Input Shaft, 26t Getrag 290 (26 T). The TH350 is an automatic shift, three-speed transmission. SInce you are changing to a TH350 you’ll be gaining an extra gear. The TH400 has a 2. 10 rear end gears. 1-2 electric shift option for computer. This will be a BIG killer on the gear ratio also I couldn't imagine a 6l60e trying to keep a steady speed up the slightest grade with 3. Differential gear ratio I have a 56 vert with a 350 engine and TH350 transmission in it, dose any know what gear ratio rear end i should use in it. 48:1 - 2nd 1. Chassis and Suspension - what gear ratio for 1/8 mile - Suggestoins please 9 rear car weighs 3200lbs 496 bbc cam operating range is to 7500rpm TH400 Was running 4. The sun gear is common (34 Tooth on each end). Gear Vendors Overdrive Unit, Chevrolet & GM 3 Sp Automatic Transmissions Gear Vendors Save Gas or Diesel Fuel, Extend Chevrolet or GMC TH350 and the Turbo 400 Mileage, 20% increase in fuel economy, Extend Engine Life, Start Saving Money Today!. 52:1, the downside with the deeper First is the major rpm drop in the 1-2 and 2-3 gear changes that the 700R4/4L60 force upon you. No refunds on special orders. Im just worried about it being a dog off the line with a 28" tire and a TH350 with a 3500 converter. 2" Torque Drive 2. In my stock 80 LWB C10 350 3spd auto th350, the stock rear end is a 2. The value will be returned in estimated differential gear ratio, based on the entered values. billet aluminum intermediate servo piston. There are two driven gear housings, one for 34 through 39 tooth driven gears and one for 40 through 45 tooth driven gears. Gear ratios Another big difference between these transmissions that are important to think of if you are going to swap them, is the gear ratios. The front driveshaft will not receive power when in 2WD the transfer case is gear driven, 1. Shop TH350 Transmissions parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. 8 ford rear end with a 3. Gearing is what you are buying when you purchase a Gear Vendors Under/Overdrive. Transmissions play a very big part in the selection of a block to work with. New Quick Ratio Manual Steering Gear Box For Amc Jeep Gm Saginaw 505. Includes 2:52 1st gear, 1:52 2nd gear, extra wide direct drum bushing, machined forward and direct pistons, new kickdown band with welded anchors, new intermediate and low roller clutches, all new B&M high performance friction plates, thrust bearings and races, new adjustable modulator, detent control link with new breather and filter. The driven gear is positioned in a removable housing that is typically located in the transmission's tailhousing. ) Tire Height - In Inches, Use The Gear Calculator or Tire Size Calculator Speedo Revs/Mile - Number of RPM the speedometer needs to turn at 60mph You can hit the SAMPLE button to see how some typical calculations will look. Popular choice for street performance and retro fitting. The gear spread is as good as the TH350, and this model comes with stronger internal parts that deliver a reliable performance that is simple to build up or repair. If you pick the TH350, the parts for them are a lot cheaper, easier to come by, and overall in a drag race, the TH350 will probably outrun the powerglide, because of its extra gear. When I changed the driven gear to a 19 tooth the speedo dropped to 56MPH at 50mph, when I changed to a 18 tooth driven gear the speedo was reading 53MPH at 50MPH so I was sure that a 17 tooth driven gear would be right on the money but it turned out the speedo. Speedo Gear Selection. Most cars and trucks with low rear end ratios will take a 15 tooth drive gear. TH350, TH400, SM465 NP435, TF727 C6, NP435 The NP203 gearbox is adaptable to many other transmissions but can use a factory adapter with the above mentioned transmissions. Tires, Gears, MPH and RPM A common 4x4 application is an upgrade to larger-than-stock tires. Check out this guide, which makes picking high and low ranges easier, on off-roadweb. 07rear driven 6 YR now changed back to 85 monte carlo SS 305 Motor as of 2004, june,30 inter changed to 84 GMC style, flatbed with a 98 van bumper. Description. 1 - This is a retrofit gear to allow the speedometer to function with 3. Find TCI Super StreetFighter Transmissions 311005 and get Free Shipping on Orders Over $99 at Summit Racing! TCI Super StreetFighter transmissions bridge the gap between the StreetFighters and full Competition series transmissions. If these 2 steps are not followed, the sizing chart will print to the wrong scale and you will not be able to acquire the correct size you need. 7L 153-Tooth 1-Piece Rear Main Seal External Engine Balance Flexplate. For more you may wish to check out: 4L60E VS 4L80E Differences TH350 vs. The General Motors Turbo 350 and Turbo 400 automatic transmissions are perhaps the automaker's most popular ever produced. All problems gone along with stopping a nagging leak at the tranny. La Speedometer Gear 3708148 Chevy TH350 type Bullet speedometer gear housing Retainer. The method of changing the transmission ratio does have the effect of adding gas mileage when applied with the right rear end ratio and engine tuning. Speedometer Drive Gear Calculator. Description. TH700-R4 is 3" longer than the TH350 short tail. The TH350 was mainly factory installed with small blocks and the TH400 with big blocks and high performance and heavier duty vehicles. I took the roadster out today for its first official shake down run. 52 which isn't bad I guess. While this can be corrected with an aftermarket ratio adapter,. Multiple Gear Ratios • Individual gear ratios can be multiplied to calculate a total gear ratio – Example: Chevy caprice with a TH-350 transmission and a 305 engine • By removing the differential cover and inspecting the gearset you are able to count 10 teeth on the input gear and 41 teeth on the output gear • 41 ÷ 10 = 4. Just not sure what to go with? the new motor should make 550 to 600hp, then throw to juice to it (125 shot for now) I have a 9" 3500 converter in a roughly 3000# truck. The "It's All in the Ratios" chart lists all the different ratios for the various Chevy automatic transmissions from the 'Glide to the TH700-R4. Power is transmitted thru the front planetary ring gear (66 tooth). Porsche 356 A Transmission 644 11213 Date Stamped 2556 Gear Ratio Bbbc. This means rebuilding the entire transmission from scratch. Since the gear tooth pitch is slightly different than OE, the service life of this gear is limited to less than 25,000 miles. 725" Thickness 350-K35201 Gaskets and Rubber Components Gear Sets Governor Support/Rear Pump and Components High Clutch TH350 Pump Gears. 8 ford rear end with a 3. Strut-type synchronizers are provided for longer life and easier shifting. 75 Ratio First Gear 1. B Nos 75 Chevy C1 Th350 Truck Speedometer Drive Gear Adapter. 7 would lead you to believe (I'm starting to regret my choice of. If you take a few moments to study the gear chart for your transmission and rear end ratio combination you will see why this product is so popular. 0 ratio and the 4spd awd, 5sp man, and 6sp man all have about a 4. Re: New close ratio gear set for 700R4/4L60E 1st 3. Installation of the correct ring and pinion gear ratio will help optimize performance, fuel economy and overall driveability. The way that these transmissions are controlled is totally different. By improving the surface area, the synchro slows the gear faster making for smoother shifts. We compiled a list of specs for many of the more common transfer cases that off-roaders use, swap, or modify. Replacing a TH350 with a 700R4 Classic 67-72 Chevy/GMC Truck Message Board Replacing a TH350 with a 700R4. I'm Googling pics of a TH350 and Powerglide transmissions to help determine. TH350, Powerglide, and M21 all have the same length and output shaft spline count - therefore, no driveshaft mods required when swapping. The TH350 was a 3 geared transmission without the last overdrive gear. a 4L80E are Controlled. 0 liter with 4. Being a truck transmission the ratios aren't quite ideal for a car, with first gear being a steep 3. 10 gears are great for accel, power, etc but thats not what you asked about. nv-3550 gearing; ebay store; other transmissions. , SM420, SM465, TH350, etc. No refunds on special orders. 67-72 RPO Codes (Regular production options) This list is exclusive to 67-72 chevy and GMC trucks but if you find that an option is missing drop me a line and I will get it added. 94)) Pick your rear end gear ratio. billet aluminum direct clutch piston. If the difference never approaches 0, the optimal shift point is at redline. This transmission had a lower first gear ratio, which was good for performance at low vehicle speeds, while the 30% overdrive provided significant fuel economy improvement. Thank you, Summit Racing Equipment. I have been told that I will need to replace the gears in the rear end. 283, 327, mild 350 CI motors and lightweight combinations usually fair very well with these ratios. Gear Ratio Calculator Home » Shop Drag Racing Parts » Driveline » Transmission Yokes » Strange 2 Pc 1350 Series Transmission Yoke GM 27 Spline TH350 TH700. (The TH350 three speed offers a 2. I marked the wheel and driveshaft and it came up close to 3. In my stock 80 LWB C10 350 3spd auto th350, the stock rear end is a 2. To use the Gear/MPH. Correct speedo gears will allow your speedometer to read properly. Meaning, if you have a 2500 stall converter and putter around town at say 1800 RPM, that doesn't mean that your converter is slipping by 700 RPM at all times. in order to get the Ford Speedo Gear in 21 Tooth, as well as a 7 Tooth drive gear to mechanically correct the speedometer. Firebird Central is a service friendly parts distributor specializing in 1967 thru 2002 Pontiac Firebird products. 75 gear set is for low-HP vehicles looking to improve 60' times, and the 2. TH400 Differences in the Way TH400 VS. In our example 70 is the Aspect, which means that the sidewall is 70% as tall as the tread is wide. We compiled a list of specs for many of the more common transfer cases that off-roaders use, swap, or modify. To do another, enter a new set of values. 2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement info. billet aluminum low/reverse clutch piston. * SuperLight with transbrake any gear ratio John makes, $4,995. Gear reduction of NP205: 1. 73 gears would be better with the way i drive, i'm always just cruising and never get to open it up. Performance – 10. YJOTM August 19. Not overly cheap mind you. Shop TH350 Transmissions parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Going any lower and your gonna rip from the light, but it is going to super suck on the highway. Formula for Calculating Tire Diameter. 1) Gear Ratio 2) Tire Size (possibly include type of tire as weight can effect decision) 3) Tranny Type 4) Optional if known- Gas Mileage This is also a very helpful link that is overlooked. It has been used in various GM cars and trucks over the years. It is a good idea to replace your speedo drive clip each time the gear is removed. 52 second and 1. Elsewhere in this story we’ve listed the ratios of both the TH350 and the 700R4/4L60E. 77 1st gear ratio, rollerized low drag planetary, deep pan, high performance intermediate band and clutches. 73 gears would be better with the way i drive, i'm always just cruising and never get to open it up. Find TCI Super StreetFighter Transmissions 311005 and get Free Shipping on Orders Over $99 at Summit Racing! TCI Super StreetFighter transmissions bridge the gap between the StreetFighters and full Competition series transmissions. Popular choice for street performance and retro fitting. Speedometer gears-TH350, which one do i need? I'm hoping maybe someone else around here has run the same combo and has played the speedometer gear game. Here is how this works. Optimal shift point is defined as the flywheel rpm for which the difference in transmission output torques between two gears is near zero for the same output shaft speed (and same road speed). TH350, Powerglide, and M21 all have the same length and output shaft spline count - therefore, no driveshaft mods required when swapping. 94, rounding). I would stay with the 3:08, or maybe the 3:55but no more, unless you rarely go on the road with it. From sheetmetal and exterior to the final interior touches. Sonnax offers cutting-edge transmission, torque converter and driveline products for the automotive aftermarket. the 4spd auto version has a 3. Looking for some guidance in choosing a gear ratio for my build. I took the roadster out today for its first official shake down run. Options "Special note" - The TH-200 is now available as a retrofit to use with either a TH350, TH400 or Powerglide converters with no modifications. Going any lower and your gonna rip from the light, but it is going to super suck on the highway. Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. 23 because it is harder to get the car going with the 3. The transmission ratios in a 700R4 are different than a Turbo350, not to mention you lost a 4th gear when doing the swap. 0 for 3rd gear. To make the swap easier is there a case number that I should be looking for? Or a specific first gear ratio? I'm looking to drive it around. A new complete speedo set up for Chevrolet Turbo 350 Transmission. If the difference never approaches 0, the optimal shift point is at redline. GM TRANSMISSION SPEEDOMETER GEAR 19 TEETH WHITE SPEEDO W/BULLET. Also calculated is the new gearing you would need in order to return back to your original gear ratio when going to a bigger or smaller tire. Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Select the value you want to solve for. #1 in Speedometer Gear Sales. See more TCI Chev Turbo 350 Th350 Street Rodder Auto Tr Email to friends Share on Facebook - opens in a new window or tab Share on Twitter - opens in a new window or tab Share on Pinterest - opens in a new window or tab. 75 ratio to provide more starting line ratio. This transmission had a lower first gear ratio, which was good for performance at low vehicle speeds, while the 30% overdrive provided significant fuel economy improvement. Need some recommendations for rear differential gear ratio and also brake stall specs for the torque converter. Options "Special note" - The TH-200 is now available as a retrofit to use with either a TH350, TH400 or Powerglide converters with no modifications. hydramatic transmission repair classic cars hydromatic DYNAFLOW, ULTRAMATIC, POWERGLIDE, JETAWAY AKA STRATOFLIGHT, ROTO, ULTRAMATIC, BORG WARNER, TORQUEFLIGHT rebuild overhaul replacement locate muscle car parts manuals. The 700r4 was a big upgrade with an additional gear (Overdrive), the 1st and 2nd gear became longer, and the transmission case itself became a bit longer. Chevy GM Flexible Stainless 350 Transmission Dipstick TH350 Tranny SBC BBC Trans. If these 2 steps are not followed, the sizing chart will print to the wrong scale and you will not be able to acquire the correct size you need. starting line ratio 1st gear x rear gear? wouldn't this be the same for the 1/8 as it is for the 1/4. 5l Engine Motor Vin 1 Auto At At Fits 03 Honda Pilot For Sale Online. 52 second and 1. You will have a full 6 forward ratios and torque multiplication that will have even taller rear gears like 3. 52 ratio and second gear is 1. Volvo Penta Omc Sx Dp Xdp Dps Upper Gearcase Gear Set Gears Gearset 2223 Tooth Gearwrench Metric - $643. We test our new products on our own test vehicles so that our customers know that they are getting a truly reliable product. Please notify Webmaster of any inaccuracies on this chart. 31 rear axle ratio. Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Select the value you want to solve for. Use our gear ratio calculator to find the effective gear ratio your vehicle will have with a new tire size. This means rebuilding the entire transmission from scratch. Purchase products to build your trans from the originator of the racing lightweight automatic in our online store. Chevrolet Transmission Dimensions Dimension "C" is the distance from the bellhousing to the center of the transmission mounting pad. TH350 question???? #909810 Tue Jan 08 2013 03 Have no idea what the gear ratio is. Ratio Adapters, Speed Up or Slow Down your Speedometer. Construction and Size The Turbo 350 transmission was a single piece transmission with the bell housing integrated into the transmission body. The TH200-4R is also similar in length to the Powerglide as well, which makes it a natural for converting from a two-speed to a four-speed automatic. Once you have entered. 72:1 and second gear ratio from 1. * SuperLight with transbrake any gear ratio John makes, $4,995. Although, both transmissions have the final gear of 1:1 so whatever transmission you pick, you will run the same RPM on the highway. Please Click on the "Read More" link for additional details about this item. Gear ratio calculator for your Chevrolet. I would stay with the 3:08, or maybe the 3:55but no more, unless you rarely go on the road with it. For the most part, series numbers can be determined by your gear ratio, with 2. If you have a Ford front axle (or other application with the differential on the driver side) you need to use a Ford NP205. For example, I changed my Nova's axle ratio to 3. The gear set was installed in a carrier, also referred to as a "pumpkin" that could removed from the front side of the axle assembly as a complete unit. 52 FIRST gear(TH350) for 2. Classic Industries offers a wide selection of All Makes parts, including All Makes interior parts and soft trim, All Makes exterior sheet metal, All Makes moldings, All Makes emblems, All Makes weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. If replacing the same model of transmission, these may be re-used from existing. It has an aspect ratio of 60, which is the ratio of sidewall height to section width. As the chart illustrates, the TH200-4R uses a 2. La Speedometer Gear 3708148 Chevy TH350 type Bullet speedometer gear housing Retainer. Note: The mounting pad is usually a part of the extension housing, but the graphic shows it on the maine case. 52 first, 1. The M22 has higher-nickel-content gears of straight-cut design. I would stay with the 3:08, or maybe the 3:55but no more, unless you rarely go on the road with it. The cost to replace the rear gear could also outweigh the cost of just replacing the trans. 62 1-2 shift, which is way more aggressive than the Turbo 350’s 2. 55 or numerically higher will have you right at the max rpm at around 35 mph, only to then have your car fall on its face when it hits second gear, feeling like it skipped a gear. We’ll assume you have a “normal” Chevy TH350 with the small extension-housing hole, a 3. 10) and you get the launches plus some good high speed cruising. While the TH400 is far stouter, it is longer and heavier than a TH350 and has a 2. If these 2 steps are not followed, the sizing chart will print to the wrong scale and you will not be able to acquire the correct size you need. The ratio is calculated by multiplying your transmission, transfer case, and ring and pinion gear ratios. This form allows you to calculate final drive ratios as well as see a comparison of speeds and RPMs within operating ranges of the vehicle. 48 second and 1. Rearend gear ratio Transmission and DriveLine Questions. Drones after a while, and I don't like big blocks twisting that hard over a long time. 2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement info. 90 rearend gear ratios falling in the 3-Series, and 4. Close gear ratio (2. Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, interior codes, and paint codes. I had a 20 tooth driven gear in my TH350 and the speedo was reading 60MPH at 50MPH. Looking for some guidance in choosing a gear ratio for my build. 23 because it is harder to get the car going with the 3. None, TH stands for turbo-hydromatic, hence th350 or 350 turbo. CHEVROLET Transmission Shifter -TH350 Automatic -Nostalgia 23", Black Anodized Arm/ Knob This is a transmission shifter for a TH350 nostalgia style shifter w/ 2 bends in the 23 inch tall lever w/ black mushroom knob. The standard gearing is: 2. Gear Ratio Calculator Home » Shop Drag Racing Parts » Driveline » Transmission Yokes » Strange 2 Pc 1350 Series Transmission Yoke GM 27 Spline TH350 TH700. The TH350 uses a 66 tooth ring gear, and the 700r4 uses a 78 tooth ring gear. Look at the bottom of the speedometer face for the numbers 940, 960, 1000, or 1020. NHRA Pro Mod Charlotte: Big Congratulations Rick Hord and Carl Stevens on taking the Number 1 Qualifiers spot with his Xtreme Racing Engins powered Corvette by laying down the quickest turbocharged pass in NHRA history with a 5. Stock Eliminator. Fatsco is a worldwide supplier of automatic transmission parts for foreign and domestic vehicles dating back from 1941 through current day. Street / Strip - These torque-flite transmissions have a crisp shift but maintain full street capabilities. ? about final gear ratio on 3/8 mile I should be planning on running for a final gear ratio on a 3/8 mile track. 52 for 2nd gear, and 1. The A41 is an excellent way to replace your tired 904, 727, 518, Powerglide, TH350 (Turbo 350), TH400 (Turbo 400), 200R4 (200-4R) or 700R4 with modern technology that offers better acceleration and a 30% reduction in cruising rpms. What were the gear ratios for that year?. Find TCI Super StreetFighter Transmissions 311005 and get Free Shipping on Orders Over $99 at Summit Racing! TCI Super StreetFighter transmissions bridge the gap between the StreetFighters and full Competition series transmissions. Why the T-56, a wide ratio. Please Click on the "Read More" link for additional details about this item. 1990 to 1993 the stock Ford production V-8 WC T-5 was upgraded with stronger 3. TH350 Transmissions parts in-stock with same-day shipping. Off-road drivers and rock crawlers build their vehicles with low (numerically high) crawl ratios because not only does that increase torque at the wheels, it allows for better throttle response for low speed, technical driving. Power is transmitted thru the front planetary ring gear (66 tooth). As a general rule, when dealing with two gears, if the drive gear (the one. The kit includes TH350 to NP205 replacement adapter, seals, o-ring, NP205 gasket and adapter instructions. Unlike other high performance transmissions builders, each individual transmission is built by one technician from start to finish. 64:1 (Wide ratio) HW = 2. Since the gear tooth pitch is slightly different than OE, the service life of this gear is limited to less than 25,000 miles. With a close-ratio box a driver can run through the gears and keep the engine in its power band so it performs in street racing or drag racing. 76 first gear in V8 crs and 1. Please notify Webmaster of any inaccuracies on this chart. 55:1 rear-gear ratio, and a 20-tooth blue driven gear that's designed to mesh with 1. The ratio of your real speed to speedo reading is the same ratio you need in tooth change. OER Parts offers a wide selection of All Makes parts, including All Makes interior parts and soft trim, All Makes exterior sheet metal, All Makes moldings, All Makes emblems, All Makes weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. The rebuilt 350/TH350 trans got close to 20 MPG on the highway. My transmission will not shift from second gear to third gear. Now I am not sure I have never raced on a 1/8 mile track so I geared for the 1/4. The T-10 is used in applications for performance type automobiles and light trucks. 75, and the naming configuration carried forward when Coan began producing better billet parts. Early attempts to change the ratios in the Turbo 400 centered around borrowing components from other OE transmissions, such as the TH200 and TH350. They are readily available on the used market and can handle 400-700 HP, depending on year and internal modifications. The van did nice on the highway. Going any lower and your gonna rip from the light, but it is going to super suck on the highway. 09/16/2007 1:30 PM: I think you do not quite understand here. 69-86 1 TH350. 4) Real world vs. 35 gear set. The TH350's gear ratios are as follows: 2. 52 second and 1. The 700R4 goes from a 3. TH700-R4 is 3" longer than the TH350 short tail. Used 1976-80. 56 gear or so. Prior to the 10 bolt/12 bolt rear axles that came out in 1965, the axle housing was the same for all ratios. For interstate driving you will want a 3. The method of changing the transmission ratio does have the effect of adding gas mileage when applied with the right rear end ratio and engine tuning. ? about final gear ratio on 3/8 mile I should be planning on running for a final gear ratio on a 3/8 mile track. The kit includes TH350 to NP205 replacement adapter, seals, o-ring, NP205 gasket and adapter instructions. YUKON ADVANTAGE: CALCULATORS. Here is the NP440 gear ratios (close to a 700r), it's a stick side loader: 3. 70 gear, I don't feel comfortable pushing high crusing speeds, so I tend to stay off the interstates for extended periods. 55 ratio (3860346) Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best). Click here for speedometer gear calculator. These charts should help you narrow down the selection of the proper gear combination to use in the transmission and speedo cable to 'get you legal' again. 43:1 (Close ratio) Turbo Hydra-Matic 400 - 1968 through 1977: Located on a plate attached to the vertical surface of the transmission case above the right-rear corner. You will notice a big difference. We'll assume you have a "normal" Chevy TH350 with the small extension-housing hole, a 3. Rear end gears are EXTREMELY important for how a car performs. A web based calculator to help you pick the right size tires, wheels, rear end, gear ratio and transmission for your 55-57 Chevrolet. The extra gear in the TH350 is in front, the end gear ratio on the TH350 and Powerglide is the same. New Quick Ratio Manual Steering Gear Box For Amc Jeep Gm Saginaw 505. This allowed the Turbo 350 to be used in the popular Chevy Corvair; which required that the drive and the driven ends of the transmission be the same. 94:1 (66/34=1. The TH400 has a 2.