Quote:

ALL transmission are to be avoided behind a Cummins except if you do the Alison conversion...



NOPE....just like I told you before the NV5600 is THE strongest transmission ever used in any pickup truck in any brand....far stronger and more reliable than the 1000 series Allison used in the GM diesels.

Trucks;

- early 12V's (gen 1 trucks) with the rotary pump are reliable but output is weak and getting more out of them will require the swap to the inline mech pump at the very least. Gen 1's are pretty solid but the ride and build quality are iffy. Getrag is only an OK 5spd. 727 is...well a 727.

- Gen 2 12V trucks are also pretty bulletproof; P7100 inj. pump is better than the rotary. NV4500 is decent, 47RE is weak.

- Gen 2 24V trucks; VP44 is very susceptible to failure due to low lift pump pressure but if you monitor that they are easy to boost output and pretty reliable compared to other years. #53 casting blocks had some cracking issues (used around '98- '99 or so). All Gen 2 trucks had some minor issues with rear brakes (until disks at 2001), steering boxes, track bars, etc. Still using the weak 47RE, the NV4500 5spd (OK) and the very strong NV5600 6spd.

- Gen 3 trucks; common rail solves VP44 issues but the injectors are a bit more complicated. Steering and Quad cab are much better. 48RE is debuted but some early 2003 standard output (250hp) trucks still have the 47RE. The 48 is stronger but still lacks features that brand X and Y are starting to add. The NV5600 is in use until (IIRC) 2006 when it's replaced with the G56....the G56 is an OK trans despite the dual mass flywheel garbage. I think one year (2004) used an intercooler with plastic end caps which sucked. 2006 up also use the TIPM computer which is a total POS.


Best years? 1994 - 1997 12V 5spd; 2001 - 2002 HO, 6spd (ETH/DEE), 2003 and pre-jan 2004 built NV5600 trucks.

I've had issues with my 2006 and 2008 that would prevent me from buying a newer one. For my money the 2003 6spd is the best of the best.




Dave

1970 Super Bee 440 Six Pack 1974 'Cuda 2008 Ram 3500 Diesel 2006 Ram 3500 Diesel 2004.5 Ram 2500 Diesel 2003 Ram 3500 Diesel 2006 Durango Limited [url] http://1970superbee.piczo.com [/url]