Speedometer Gear, Speedometer Gears, Ford, GM, Dodge 700R4

Speedometer World

Worlds Largest Selection of Rear Wheel Drive American Speedometer Gears.

Buying Speedometer Gears Just Got Easier.

We Ship Worldwide. The USPS postage is cheap on small speedometer gears.

Before calling try to have tire height, rear end ratio and drive gear tooth count if possible.

700R4 4L60E Ratio Adapters 700R4 Gear Driven Electronic Electronic Ratio Adapter 200-4R

Speedometer Cables Special Speedo Tail Housings 4L80E TH350 TH400 Cable X Super T10 AXOD & E

E4OD Universal Cable and Pulse Generators Dodge & Jeep Ford Electronic TH400 GM 1964 Back

90 Degree Miscellanies Gears T5 T10 Ford Manual Older Ford Gears Ford Red 18 Tooth, 57-63

GM Only Ford Only Dodge / Jeep Only Cables Only Housings Only

Ford / Chrysler / VDO Odometer Gears

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2WD - 700R4 Speedometer Gears (also fits non-Chevy TH350)

Speedometer Calibration
Variables such as the vehicle's axle ratio and tire diameter affect the accuracy of the speedometer. The following speedometer drive gears and driven gears are available for the 700R4 / 4L60 transmissions. Most cars and trucks with low rear end ratios will take a 15 tooth drive gear. There are two driven gear housings, one for 34 through 39 tooth driven gears and one for 40 through 45 tooth driven gears. Look at the bottom of the speedometer face for the numbers 940, 960, 1000, or 1020. These numbers are the number of revolutions the speedometer cable must turn in one mile of travel. Your speedometer may or may not show a number. Most speedometer from 1965 on use 1000.

A spring clip retains the speedometer drive gear on the transmission output shaft.

Twelve speedometer driven gears are available for the 700R4 / 4L60 transmissions to calibrate the speedometer with various axle ratios and tire diameters. The number on the driven gear housing must match the number of teeth on the driven gear. Unless driven gears with more than 45 teeth and / or drive gears with fewer than 15 teeth become available, it will be impossible without using a ratio adapter to have an accurate speedometer with rear end gear ratios lower (higher numerically) than 4.10:1, unless 27 inch or larger tires are installed.

To determine your tires true diameter in relation to determining what speedometer gears you need, measure from the ground up to the center of the axle then multiply by two. The actual run out of the tire can be as much as 2 to 3 inches less than what the circumference of the tire measures. In effect your tire has two diameters.

To determine your rear end ratio, raise both tires off of the ground, turn both tires at the same time one complete turn, at the same time count the turns of the drive shaft, this is your ratio.

With 15 Tooth Drive Gear
Axle Ratio	Tire Height	Driven Gear Teeth
4.56	33	42
4.56	35	39
4.10	26	45 will work, but will read about 3 MPH fast at 50 MPH.
4.10	27	45
4.10	28	44
4.10	29	43
4.10	30	41
4.10	31	40
4.10	33	38
4.10	35	35
3.73	26	43
3.73	27	42
3.73	27 1/2	41
3.73	28	40
3.73	29	39
3.73	30	38
3.73	31	36
With 17 Tooth Drive Gear
Axle Ratio	Tire Height	Driven Gear Teeth
3.73	28	45
3.73	29	44
3.42	26	45
3.42	26 1/2	44
3.42	27	43
3.42	28	42
With 18 Tooth Drive Gear
Axle Ratio	Tire Height	Driven Gear Teeth
3.23	26	45
3.23	26 1/2	44
3.23	27	43
3.23	28	42

#54. 700R4 Speedometer gear housing for 40 to 45 tooth driven gear (aluminum not plastic) (also fits Olds TH350). Comes with a new gear seal but no o-ring. Cost $62.00

#54. 700R4 Speedometer gear housing for 34 to 39 tooth driven gear (aluminum not plastic) (also fits Olds TH350). Comes with a new gear seal but no o-ring. Cost $42.00

#54U. Good Used Speedometer gear housing for 40 to 45 tooth driven gear (aluminum not plastic). Comes without a new seal or o-ring. (OUT OF STOCK) Cost $23.00

#54U. Good Used Speedometer gear housing for 34 to 39 tooth driven gear (aluminum not plastic). Comes without a new seal or o-ring. (OUT OF STOCK) Cost $12.00

#54P40. NEW. Speedometer gear housing for 40 to 45 tooth driven gear (plastic not aluminum) (also fits Olds TH350). Comes without a new seal or o-ring. Cost $29.00

#54P. Speedometer gear housing for 34 to 39 tooth driven gear (plastic not aluminum) (also fits Olds TH350). Comes without a new seal or o-ring. Cost $12.00

The above and below 700R4 parts also fit non-Chevy TH350 transmissions. Speedometer Cables

Tail housing reseal kit for 700R4, TH350, TH350C and early 4L60E transmissions. Comes with rear seal, bushing and tail housing O-ring. Cost $6.00

Tail housing reseal kit for late model 4L60E transmissions with a 6 bolt tail housing. Comes with rear seal, bushing and tail housing O-ring. Cost $7.00

#54X. Speedometer drive gear, comes in 15, 17, 18 or 19 tooth. Cost $8.00

#54XX. Speedometer driven gear, comes in 34 to 45 tooth. Cost 11.00. (Also fits 208 transfer case.)

34 to 39 Teeth

40 to 45 Teeth

Speedometer Calculator, Click Here

15 Tooth	17 Tooth	18 Tooth	19 Tooth

Retainer, Cost $5.00

5/16" Clip, Cost $3.50

O-Ring, 700R4 housings come without this O-ring. Cost $1.50

Gear seal, new 700R4 aluminum housings come with this seal, used or plastic housings don't come with this seal. Cost $1.50

#208. This is a 15 tooth speedometer drive gear for a GM 208 transfer case. (We know where to get more for $199.00 each, our cost ! ! !) (OUT OF STOCK) New Old Stock. Cost $59.00

#208D. This is a 13 tooth speedometer drive gear for a GM 208 transfer case. This is actually a Dodge 208 transfer case drive gear, but will work on a GM 208 transfer case if you make a .293" spacer from your old GM gear and use it as a shim on one end. Cost $32.00

#13. Chevy / GMC 13 tooth, 38 spline transfer case speedometer drive gear. Fits some 1988 up Chevy / GMC 241 transfer cases. Cost $19.00

#205. This is a 7 tooth speedometer drive gear for a GM 205 or 203 transfer case. Also fits most Dodge Ford 205 or 203 transfer cases with a steel driven gear. Cost $35.00

GM / Dodge / Ford Ratio Adapter

#54RA. This GM / Dodge / Ford ratio adapter will slow your speedometer reading down. Made for low rear end ratios with short tires. Offset for clearance reasons. If your GM speedometer reads too fast with 15 and 45 teeth gears then you need this part. This part will slow down your speedometer reading. Cost $62.00

#54RA2. If your truck tires have been switched to larger tires or you just need to speed up your speedometer this one will correct your problem. This part will speed up your speedometer reading. Cost $62.00

Other ratios available on special order, allow 2 to 4 weeks. No refunds on special orders. The male side can be turned 180 degrees, just remove the 4 screws and turn. We can slow your speedometer down as much as 58% or speed it up as much as 200%. Cost $72.00

Speedometer Cables

#54SPK. Ratio Adapter Small Part Kit. These parts come with the ratio adapter. Cost $9.00

#54F. Ford 1957 up speedometer gear housing. When your speedometer reading can't be corrected with a speedometer gear change use this housing in conjunction with a ratio adapter and screw on speedometer cable to obtain the correct reading. Comes with a 3 5/8" long drive cable for the gear. Cost for gear housing and 3 5/8" cable. (OUT OF STOCK) $72.00

Ratio Adapter with 2 cables for GM and Dodge starting at $127.00.


#40 "90 DEGREE, DIRECT or CONTINUOUS ROTATION". Sticks out 1 1/2 inches past the housing. 7/8 X 18 Thread and .104 internal square on all ends. In stock now. Cost $88.00 Qty			#41 "90 DEGREE, REVERSING or OPPOSITE ROTATION". Sticks out 1 5/8 inches past the housing. Cost $88.00 Qty


#42 "90 DEGREE, DIRECT or CONTINUOUS ROTATION" with built-in ratio adapter. Sticks out 1 5/8 inches past the housing. 7/8 X 18 Thread. Cost $88.00 Qty Percent, Plus or Minus

Other ratios available on special order, allow 4 to 6 weeks. No refunds on special orders.

#54K. Lokar universal speedometer cable, cut to fit. Fits TH350, TH400, 700R4, PG, 200, 200-4R, 904, 727, C4, C6 and AOD. 7/8 thread bottom, 5/8 thread top. Cost $69.00

Please call on other speedometer cables not listed. Many types in stock, too many to list here.

Speedometer Cables

#104. This double ended drive key measures .104" X 1 3/4". May require some grinding. Cost $6.00

#54MG. Eight pulse signal generator for your electronic speedometer head. This goes behind your dash and plugs to the head and drives off of your old speedometer cable. Doesn't include the cables. Can be installed inline for both mechanical speedometer and pulse generator. Can be screwed directly to the transmission at the speedometer housing. Works for GPS, EFI or Cruise. Cost $63.00

Fits 700R4 and Electronic T-5 Transmissions

#55. Driven gears for gear driven electronic speedometers, 34 to 45 tooth (no 36). Use with #54X drive gear above. Cost $11.00

34 to 39 Teeth

40 to 45 Teeth

#55X. Speed sensor for above 34 to 39 tooth driven gear. (Black) $69.00

#55XX. Speed sensor for above 40 to 45 tooth driven gear. (White) $56.00

These sensors will fit a C4 Corvette if used with the correct pig tail, #120. These two sensors put out 4 pulses per turn. A four pulse sine-wave (A.C. current or alternating current) signal is required by the 1990-1993 TPI, 1992-1993 LT1 engines and 1990-1993 Camaro 3.1 / 3.4 V6 engines.

#55B. Speed sensor for above 34 to 45 tooth driven gears with speed sensor and speedometer drive. We must know what gear tooth count you're going to use with the sensor. This is needed for an EFI conversion. Cost $84.00

34 to 39 Tooth

40 to 45 Tooth

This sensor puts out 4 pulses per turn. A four pulse sine-wave (A.C. current or alternating current) signal is required by the 1990-1993 TPI, 1992-1993 LT1 engines and 1990-1993 Camaro 3.1 / 3.4 V6 engines.

Electronic Ratio Adapter (ERA)

Now You Have the Solution to Your Speedometer Problems.....

For 700R4, 4L60E and others with electronic speedometers.

#69. Any change in a vehicle's tire size or rear axle ratio will cause the speedometer reading to be inaccurate. The Electronic Ratio Adapter (ERA) is designed to correct this problem. With the ERA, you simply hook up four wires, set the DIP switches according to the calibration table included with your order, and you are ready to go.

What does the Electronic Ratio Adapter do?

The automotive industry has a great variety of part sizes, types, shapes and descriptions, but regardless of make, model or year, a few things are standard. One of those standards has been the number of revolutions a speedometer cable will make for each mile traveled. Nowadays, electronic pulses have replaced the rotating cable, but the same principle applies. The Pulse Ratio (the number of pulses per mile traveled) remains the same, regardless of speed, since the same distance is traveled and the same number of pulses have occurred each mile no matter what the speed was during that mile.

However, this Pulse Ratio can be made to vary from the true when modifications are made which change the number of electronic pulses per mile on a particular vehicle. This is most commonly caused by changing the tire size (increasing the outside diameter of the tires will cause the tire to travel further before making a complete revolution), but other modifications could have the same result. When the Pulse Ratio is thrown off, the speedometer/odometer will be inaccurate and corrections must be made.

This relative difference between true speed and the speed indicated on the speedometer is called the Variance Ratio, and it is corrected using the Electronic Ratio Adapter. Cost $169.00

Wiring Diagram of Electronic Ratio Adapter:

Electronic Ratio Adapter	(Red Wire) + 12 volts, ignition on
	(Black Wire) Ground
	(White Wire) Signal in from the speed sensor
	(Blue Wire) Signal out to the ECM / Speedometer

Currently the Electronic Ratio Adapter is not recommended for 2000 and newer Fords and 2001 on Dodge Rams.

SPECIAL ORDER ONLY

#SW41 - Fits 700R4 / 1993 - 1997 4L60E transmissions. Converts your transmission to standard GM manual speedometer and VSS all in the same tail housing. Kit uses all new GM speedometer parts and VSS sensor. Comes with all parts and instructions to complete the job. The transmission mount on the tail comes in three different styles. We need the vehicles rear axle gear ratio and tire diameter when ordering. Cost: $375.00

#SW42 - Fits 1998-2004 4L60E & 4L65E transmissions. Uses all new GM parts including speed sensor and comes complete with instructions. The mount on the tail sits back 2 1/2 inches from the stock location. We need the vehicles rear axle gear ratio and tire diameter when ordering. Cost: $495.00

#SW43 - Fits 1997 and up T-56 transmissions. This kit gives your T-56 a standard GM manual speedometer hookup, without interrupting your factory VSS set up. We need the vehicles rear axle gear ratio and tire diameter when ordering. This price is using customers tail housing or there will be a $100.00 core charge. Cost: $595.00

#SWP. Two wire one clip speed sensor pig tail, fits many GM speed sensors. Fits numbers SW41, SW42, SW43 and 1SS. $20.00

#SW44. The SW44 kit will give your 4L80E transmission a factory manual speedometer hook up that uses all new GM parts and does not interfere with any stock electrical configurations. The tail housing is the same length as most stock tail housings which means you can use your existing drive shaft.

The SW44 kit includes new tail housing, drive gear, sleeve and driven gear, sleeve retainer, and bolt. Tail housing bolts can be added if needed. This is a simple 30-minute bolt on installation. When ordering, provide rear axel gear ratio and tire diameter. This tail housing is 5 1/2 inches long and requires an output shaft with a 1.410" to 1.412" place for the speedometer drive gear. If your shaft is larger than this we can machine the speedometer drive gear to fit your shaft. If your shaft has splines where the speedometer gear goes you will need a new output shaft. Cost $495.00

45RFE Tail Housing with Speedometer Gears. Cost $500.00 plus a $150.00 core charge on the tail housing and output shaft.

#1SS. 4L80E speed sensor, two required per transmission. Cost $24.00

#RR1. New 4L80E speed sensor ring (reluctor ring). The output speed sensor rings on the 4L80-E transmissions are often damaged while rebuilding. The OEM material is very brittle and can easily break. These rings are not serviced separately by the OEM and can only be purchased with the complete carrier assembly. The limited supply of good used rings is making them very difficult to find. Cost $23.00

200-4R Speedometer Gears

Most cars with low rear end ratios will take a 10 tooth drive gear. The drive gear is part of the governor assembly which is located inside the oil pan. The gear can be replaced separately by removing the retainer clip on the governor shaft.

Drive Gears	Driven Gears
10 teeth - green	27 teeth - black
11 teeth - orange	28 teeth - yellow
12 teeth - red	29 teeth - green
13 teeth - white	30 teeth - blue
	31 teeth - white

With 10 Tooth Drive Gear
Axle Ratio	Tire Height	Driven Gear Teeth
4.10	26	31 will work, but will read about 2 MPH fast at 50 MPH.
4.10	27	31
4.10	28	30
4.10	29	29
3.73	26	29
3.73	27	28
3.73	28	27
With 11 Tooth Drive Gear
Axle Ratio	Tire Height	Driven Gear Teeth
3.73	27	31
3.73	28	30
3.42	26	29
3.42	27	28
3.42	28	27
With 12 Tooth Drive Gear
Axle Ratio	Tire Height	Driven Gear Teeth
3.23	26	30
3.23	27	29
3.23	28	28

#55R. 200-4R O-Ring. Cost $2.00

#68R. Chevy TH350 / 200-4R Speedometer Housing Retainer. Cost $4.00

#55X. 200-4R speedometer drive gears. Cost 10 Tooth $42.00. The 11, 12 and 13 tooth gears are no longer available.

10Tooth

#55. 200-4R steel speedometer housing (good used). Cost $19.00

#55XX. 200-4R speedometer driven gear. Cost 27 to 30 Tooth $11.00, 31 Tooth $14.00

27 to 30 Tooth

31 Tooth

Speedometer Calculator, Click Here

Speedometer Cables

#1964. Custom made GM 1964 back, left hand gear with a .810" or .875" head. Comes in 17 to 25 tooth gear count. We need to know stem length, gear length and stub length. Fits some standard transmissions, maybe some automatics. Call 1-888-8771008 to place an order. Cost $49.00