QU10094 1992-1994 32 Tooth GM NV4500 Countershaft 3rd Gear

Discontinued. See Tech Note 3 for alternative options.

QU10094 1992-1994 32 Tooth GM NV4500 Countershaft 3rd Gear for 6.34:1 1st and reverse gear ratio 1992-1994 GM NV4500 5 speed manual transmissions. Your matching Mainshaft 3rd Gear must have 28 teeth. QU10093 is the 2nd largest gear on your modular Countershaft and it ONLY works in 1992-1994 GM NV4500 transmissions with 20 tooth input shafts. Imported.

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Dan the Gear Man® Tech Notes:
Product Note
Gear Specs
3rd Gear Countershafts
Common Failures
NV4500 Tools
Matching Parts
Applications

Tech Note 1: Product Note
QU10094 and QU10092 32 Tooth Countershaft 3rd gears are out of production. If you need a countershaft 3rd gear for your 1992-1994 GM NV4500 transmission, you will need to change both your mainshaft and countershaft gearing to the parts used with 5.61 ratio transmissions! See Tech Note 2.

Tech Note 2: Gear Specs
QU10094 is a 32 tooth, keyed, press-fit gear that fits QU10090 Countershaft. The transmissions that use this gear will be 1992-1994 GM NV4500 transmissions with 6.34:1 1st and reverse gear ratios. The matching 3rd Gear MUST have 28 teeth. QU10094 is NOT compatible with 1992-1995 Dodge and 1995 GM 5.61:1 ratio NV4500 transmissions with 29 tooth mainshaft 3rd Gears.

Tech Note 3: 3rd Gear Countershafts
QU10094 is out of production and no longer available. If you need a countershaft 3rd gear for your 1992-1994 GM NV4500 transmission, you will need to change both your mainshaft and countershaft gearing to the 5.61 ratio parts listed below:
QU10154: 38 Tooth Counter Shaft Front (Drive) Gear OR QU10078 Countershaft Assembly
QU10174: 30 Tooth Countershaft 3rd Gear OR QU10078 Countershaft Assembly
QU10203: 51 Tooth, 6.22" diameter Countershaft 5th Gear
QU10201 29 Tooth Mainshaft 3rd Gear
QU10007 or QU10086: 22 Tooth Mainshaft 5th Gear
QU10059 or QU10077 22 Tooth Input Gear

Tech Note 4: Common Failures
Typically, Countershaft gear tooth failures occur from one of three causes: low or improper oil, clutch pilot bearing failures (which cause misalignment of the input shaft), and excessive horsepower/torque (over 275hp/600 Lb-Ft of torque). Broken 3rd gear teeth are almost always caused by exceeding the demonstrated 600 Lb.Ft input strength limit of the NV4500.

There are claims that cryogenically treating NV4500 gears will increase gear strength as much as 30%. Unfortunately, there does not seem to be any peer-reviewed documentary evidence to support those claims. Cryogenically treating gears is primarily a cold-hardening process that changes the molecular structure of steel to decrease wear while retaining or increasing hardness. If properly done, it is probable the cryogenic treatment process does slightly increase the impact and fatigue resistance of NV4500 gears, but not enough to significantly increase the ability of an NV4500 transmission to reliably handle more than 600 Lb.-Ft. of input torque especially considering the maximum factory torque rating of the GM NV4500 transmission is only 450 Lb.-Ft..

Tech Note 5: NV4500 Tools
Need Torque Specs or Rebuild procedures? Order my 116 page, full color illustrated TM1003 NV4500 Rebuild Manual.

You will need some special tools to correctly service your NV4500 Transmission. The chart below lists our current NV4500 Special Tools for popular models.

Tech Note 6: Matching Parts
Matching Parts for QU10094 Countershaft Gear:
QU10090 Modular Countershaft
QK1129 Drive Key Kit
QU10093 39 Tooth Countershaft Front Gear
QU10099 28 Tooth Mainshaft 3rd Gear
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
V1003DVD NV4500 Overhaul Video
For 5.61:1 Conversion Gears, see Tech Note 2

Applications
Chevy and GMC:
All with 6.34:1 Low Gear Ratio New Venture NV4500 5 Speed Manual Transmission: 1992, 1993, 1994