2006_superado Posted July 22, 2008 Report Share Posted July 22, 2008 I would guess that with the 5 speed you could pick up some milage if you had the gearing right. The NV4500 is a very tough trans, but doesn't like to be shifted hard. It is considerably stronger than the NV3500, but still a purpose built truck transmission. so trying to get one for performance purposes would'nt be a good idea?.. could'nt switch to a heavier clutch (centerforce or similar) or switch the shifter to something like a b&m or hurst?.. for some occasional track use?... i probably won't do it anyway but it was always a thought in the back of my head lol. Quote Link to comment Share on other sites More sharing options...
zippy Posted July 25, 2008 Report Share Posted July 25, 2008 The NV3500 is pretty weak overall, but the NV4500 is only week in it's syncro design. If powershifting isn't a concern to you it will hold up very well and has some fun gearing to it. They just aren't designed to be shifted fast. Quote Link to comment Share on other sites More sharing options...
destey Posted July 28, 2008 Author Report Share Posted July 28, 2008 the detroit true trac works like a LSD and locks under load or slippage. you "shoud" have a 14 bolt so make sure you order it right. i got mine from ebay for 420 shipped with bearings, races, and shims included What's an easy way to tell if i've got a 14 bolt? Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted July 28, 2008 Report Share Posted July 28, 2008 What's an easy way to tell if i've got a 14 bolt? get underneath your truck and count how many bolts are in the diff. cover Quote Link to comment Share on other sites More sharing options...
destey Posted July 28, 2008 Author Report Share Posted July 28, 2008 The NV3500 is pretty weak overall, but the NV4500 is only week in it's syncro design. If powershifting isn't a concern to you it will hold up very well and has some fun gearing to it. They just aren't designed to be shifted fast. http://en.wikipedia.org/wiki/New_Venture_G...00_transmission doesn't say anything about 2003, anyone know if my 2003 Silverado 2500 (not HD) has this? Quote Link to comment Share on other sites More sharing options...
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