QU10174 1992-1995 30 Tooth NV4500 Countershaft 3rd Gear

QU10174 1992-1995 30 Tooth NV4500 Countershaft 3rd Gear for 5.61:1 1st and reverse gear ratio 1992-1995 Dodge and 1995 GM NV4500 5 speed manual transmissions. Your matching Mainshaft 3rd Gear must have 29 teeth. QU10174 is the 2nd largest gear on your modular Countershaft and it ONLY works in 1992-1995 Dodge and 1995 GM NV4500 transmissions with 22 tooth input shafts and QU10090 Modular Countershaft. Imported.

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Dan the Gear Man® Tech Notes:
Matching Countershafts
Common Countershaft Gear Failures
Matching Parts
NV4500 Tools
Applications

Tech Note 1: Matching Countershafts
QU10174 is a 30 tooth, keyed, press-fit gear that fits QU10090 Countershaft. The transmissions that use this gear will be early production NV4500 transmissions with 5.61:1 1st and reverse gear ratios. The matching 3rd gear MUST have 29 teeth. QU10174 Gear and QU10090 Countershaft can be replaced by QU10078 Countershaft assembly. QU10174 is NOT compatible with 1992-1994 20 tooth input, GM NV4500 transmissions with 6.34:1 low gear ratio.

Tech Note 2: Common Countershaft Gear 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 NV4500HD transmission is only 460 Lb.-Ft..

Tech Note 3: Matching Parts
Matching Parts for QU10174 Countershaft Gear:
QU10090 Modular Countershaft
QU10078 One Piece Countershaft Assembly for 5.61 Ratio
QU10201 29 Tooth Mainshaft 3rd Gear
QK1129 Drive Key Kit
QU10154 38 Tooth Countershaft Drive Gear
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
V1003DVD NV4500 Overhaul Video

Tech Note 4: 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.

Applications

Chevy and GMC:
C1500, K1500, C2500, K2500, C3500, C3500HD, K3500 with NV4500 5 Speed: 1995

Dodge and Ram:
D and W Series with Gas Engines and New Venture NV4500 5 Speed Manual Transmission: 1992, 1993
Ram 2500, Ram 3500 with Manual Transmission: 1994, 1995