Transmission System Description and Operation c
NV3500 Manual Transmission
The New Venture Gear NV3500 (85 mm) is a five speed manual transmission
used on light duty truck with 4.3L, 5.0L, and 5.7L engines. This manual transmission
is identified by the RPO's M50 and MG5. The reason for two different RPO codes
is because of the different first speed gear ratios that the transmission
can contain. The first gear ratio in the NV3500 transmission installed
on C/K (GMT400 and GMT 800) trucks is different from that of the NV3500
transmissions that are installed in the smaller S/T trucks. The 85 mm is the
distance between the inputshaft and the counter shaft. The transmission is
available in rear wheel and four wheel drive versions.
The transmission has the following features:
| • | Constant mesh helical gearing for reduced noise. |
| • | A two piece aluminum housing. |
| • | Synchronized shifting in all forward gears. |
| • | A shift tower mounted shift lever. |
| • | Single rail shift system. |
