TRANSMISSION LUBRICATION: The NV4500 transmission uses approximately one gallon of synthetic oil. The GM input shaft from a 6.34:1 early transmission will not fit the Dodge transmissions. This allows the shortest transmission length for most applications. In 2001, Dodge discontinued the 23 spline output shaft on the gas version NV4500, and all Dodge transmissions standardized to 29 spline.įor most conversion applications, we like the Dodge gas version transmission with a GM input shaft. The front retainer is 5.6" with a 1.43" snout. 75" pilot tip (we have seen very rare 1" 19 spline inputs in 1993 trucks). The input shaft is 7-1/2", 1-1/8" 10 spline with a. The front bearing retainer index is 5.6" with a snout diameter of 1.75".ĭodge Gas 4wd NV4500s initially were introduced with a 23 spline rear output shaft and a 6-1/4 tailhousing. The input shaft is 7-1/2" 1-1/4" 10 spline with a. Diesel NV4500 4WD transmissions always have a 29 spine rear output shaft with a 6-1/4"" rear tailhousing. The transmission has the lower 6.34 with the newer bolt pattern.ĭodge 4wd NV4500 transmissions have always maintained the same gear ratios and bolt patterns throughout production however, variations occur between diesel (and V10) versus gas models. We have also seen a rare 1995 GM NV4500 which can be classified as a hybrid. The input shaft is 6-5/8" 1-1/8" 10 spline with a. As a general rule, a GM NV4500 4WD transmission will always have a 32 spline rear output shaft with an 8-1/8" rear tailhousing. The synchronized reverse was also added and the front bearing retainer was enlarged from 5.125" to 5.6" diameter. After 1995, the first gear and front bolt pattern reverted to the Dodge 5.61 first gear and the taller top to bottom 6.043" bolt hole configuration. The 1992 & 1994 GM versions have a lower first gear of 6.34 and can be identified by a smaller front bolt pattern with a top to bottom measurement of 4.685". The shifter handle typically allows for better accessibility over older granny 4 speeds as it is located further rearward at 9-1/2" from the face of the transmission. The case measures 12.375 inches and features dual PTO ports. The transmission case is cast iron with an aluminum top cover. The initial Dodge version offered a synchronized reverse. All forward gears are fully synchronized. Featuring a granny low first gear coupled with a fifth gear overdrive, the stout NV4500 is truly the best of both worlds.įirst introduced in 1992, the NV4500 is a constant mesh helical geared, heavy duty 5 speed transmission. The NV4500 transmission was the highlight of this new venture.
CHEVY NV4500 MANUAL
The New Venture Gear Corporation was developed when GM’s Muncie Transmission Division and Chrysler’s New Process Corporation joined forces to manufacture a full product line of manual transmissions.
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