Cross-posting this with my crapcan hauler truck thread. Anyone know if the manual trans found in a '92 Chevy 2500 with the 6.5L TD is the same as the one in a '95 Chevy 3500 (same engine, and both are RWD).
I think they should both be NV4500s. Sounds like the gear ratios might be different. Some places list a different P/N for the input shaft. Have been hunting through the off-road and chevy forums and can't find much other info about whether they're interchangeable.
Maybe important: the '95 has an external-mount slave cylinder (vs. the concentric internal units found on later NV4500s).
The 95-up NV4500 is different than the 92-94 trans. Some info on this I got from here: http://www.allpar.com/mopar/transmissions/NV4500.html
"General motors used the NV4500 as RPO MT8 and MW3 in 8500 and GVWR light trucks from 1992-2006. 1992-2007 GM units used the corporate V8 bellhousing to engine bolt pattering. They had:
Input shaft measuring 6 5/8" in length, 1.125" in diameter with 10 splines and a .590" diameter pilot 2WD use a fixed yoke output; 4WD use a 32 spline output 1992-94 RPO MT8 units had a different bellhousing bolt pattern than GM 4-speeds, as well as right hand mounted hydraulic slave cylinder with fork-mounted throwout bearing and unsynchronized reverse
1995-2007 RPO MW3 units had the Dodge transmission to bellhousing bolt pattern; a concentric internal hydraulic clutch slave cylinder with integrated throwout bearing; and synchronized reverse."
81cpcamaro wrote: The 95-up NV4500 is different than the 92-94 trans. Some info on this I got from here: 1995-2007 RPO MW3 units had the Dodge transmission to bellhousing bolt pattern; a concentric internal hydraulic clutch slave cylinder with integrated throwout bearing; and synchronized reverse."
Yeah, my truck (the '95) has an external slave cylinder. Which seems like the older design. Maybe a carry over into the early '95 model year? Would all of these Chevy NV4500s be interchangeable provided they were external slave designs? It's looking like they are, but I haven't found a definitive source.
If it has the external slave, it probably is the same. If the bolt pattern to the bellhousing is the same then I would think it would interchange.
With some plumbing for the clutch line they sound interchangeable as long as you get one with a bellhousing.
In reply to Kenny_McCormic:
OK, cool. That's what I was coming up with too. Gonna take a look at it later today or tomorrowm, probably. Make sure everything else looks the same.
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