New Venture Gear 3500 NV3500 transmission

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The NV3500 is a medium duty 5-speed overdrive manual transmission manufactured by New Venture Gear
It can be identified by its two piece aluminum case and shift tower shifter. The distance between the centerline of the mainshaft and the countershaft is 85mm. [1]


Contents

[edit] Prior Design Variations

There are four GM medium duty transmission designs that led to and are often mistaken for the NV3500:

  • 1987 MG-290
  • 1988 HM-290 HM= Hydramatic / Muncie
  • 1989 5LM60 (early)
  • 1991 NVG 5LM60 (late) NVG= New Venture Gear
  • 1993 New Venture Gear releases the NV3500. Externally the earlier GM units "look like" the NV3500 however internal components were extensively re-designed.
    • The HM290 and 5LM60 units have a complicated arrangement of 4 shift rails. The NV3500 has one shift rail.[2]
    • There are two designs for the 5LM60 input shaft and bearings (input shaft and main shaft). The first design 1988-1990 has a ball bearing with a roller bearing behind it. The second design has a much larger single ball bearing. The first design bearings are reputed to be failure prone. [3] The updated input shaft and bearings carried through to the NV3500.


  • All 5 of these transmissions can be interchanged as a complete unit with the following caveats.
    • "Drop in" interchanges between GM S (S10 etc) and C/K trucks will require modification of driveshaft length and crossmember placement. GM S models have a longer tail-shaft than C/K trucks.
    • GM and Dodge transmissions will not interchange.
      • The bellhousing has differing bolt patterns and is integrated with the transmission casting.
      • The Dodge input shaft length & size and the output spline count differ from the GM units.

[edit] Lubrication

Lubricants recommended for the NV3500:

  • Mopar Manual Transmission Lubricant (PN 4761525)
  • GM Synchromesh Transmission Fluid (in US 12345349 in Canada 10953465)

Capacity:

  • 4.2 pints


[edit] Applications

  • 1993-1998 Chevrolet & GMC CK with Vortec 4300
  • 1999–2006 Chevrolet Silverado 1500 and 2500LD
  • 1999–2006 GMC Sierra 1500 and 2500LD
  • 1993-2003 GM S (S10 etc) trucks with 4.3 liter Vortec 4300
  • 1994-2001 Dodge Ram 1500 [4]
  • 1994-1995 Dodge Ram 2500 Light Duty
  • 1994-???? Dodge Dakota V8

Dodge Ram order code DDC
General Motors RPO code MG5

[edit] Features

  • Single shift rail unlike the HM290 and 5LM60[5]
  • Fully synchronized forward and reverse gears.
  • A two piece aluminum housing with no access plate.
  • A shift tower mounted shift leaver
  • Designed for four wheel (RPO M50) and rear wheel (RPO MG5) applications for GM and Dodge
  • Rated for 300 ft·lbf of torque
  • Weight 110lb with oil

Wide Ratio Gearing:

1 2 3 4 5 R
4.02 2.32 1.40 1.00 0.73 3.55

Close Ratio 2500 Dodge Ram Truck Gearing:

1 2 3 4 5 R
3.49 2.16 1.40 1.00 0.73 3.55

[edit] Instructions

These are considered extremely difficult transmissions to rebuild. Special tools are required for a full rebuild. [6]


[edit] References

  1. ^ 1998 Chevrolet and GMC C/K Truck Service Manual 2nd edition Vol.4, 1999 General Motors Corp. All Rights Reserved
  2. ^ Domestic Truck Tranny Guide
  3. ^ Up To Standards 11-98
  4. ^ Ram NV3500 Specifications
  5. ^ Domestic Truck Tranny Guide
  6. ^ Up To Standards 11-98

[edit] See also