NP261 Input Torque Spec?
Oct 30, 2014 | 09:40 PM
#1
NP261 Input Torque Spec?
I can't seem to find the rating online. Does anyone know what the NP261 was rated at for max torque? The 32 spline input shaft version you can find behind an LQ4/4L80E.
Oct 31, 2014 | 03:02 PM
#2
What is your setup? They are pretty tough, Atomic is running one (last I knew). He is making more power than most people on here and he isn't afraid to abuse it.
I believe the 6 in the 261 refers to the strength of the unit. The higher the number the stronger it is.
I believe the 6 in the 261 refers to the strength of the unit. The higher the number the stronger it is.
Oct 31, 2014 | 03:14 PM
#4
Oct 31, 2014 | 03:15 PM
#5
That is the same setup I have. I bought a 261, but decided to go with the 149 for simplicity. I also found this info a while ago and saved it.
"Useful NV information::New Venture Gear T-case terminology:
The first number is the number of speeds:"1" = one speed (high range). Example – the NV 136. "2" = two speeds (high range and low range). Example – the NV 241.
The second number is the strength:The NV 241 is designated "4" in strength – tougher than the NV 231, but not as heavy duty as their largest T-cases, which go up to a "7" (eg, NV 273, for vehicles with a GVW of 17,500 lb).
The third number designates the type of T-case:"1" = part-time 4WD"2" = full-time 4WD with an open center differential plus lockable part-time option – like the Selec-Trac NV 242 of the Jeep Cherokee and Dodge Durango, or the Hummer’s NV 242HD AMG."3" electrically shifted."4" not currently used."5" Torsen-type differential."6" computer controlled multi-plate wet clutch, like GM’s AutoTrac NV 246."7" GeroDisc – like the Grand Cherokee’s Quadra-Trac II NV 247."8" not currently used."9" viscous coupling.
"Useful NV information::New Venture Gear T-case terminology:
The first number is the number of speeds:"1" = one speed (high range). Example – the NV 136. "2" = two speeds (high range and low range). Example – the NV 241.
The second number is the strength:The NV 241 is designated "4" in strength – tougher than the NV 231, but not as heavy duty as their largest T-cases, which go up to a "7" (eg, NV 273, for vehicles with a GVW of 17,500 lb).
The third number designates the type of T-case:"1" = part-time 4WD"2" = full-time 4WD with an open center differential plus lockable part-time option – like the Selec-Trac NV 242 of the Jeep Cherokee and Dodge Durango, or the Hummer’s NV 242HD AMG."3" electrically shifted."4" not currently used."5" Torsen-type differential."6" computer controlled multi-plate wet clutch, like GM’s AutoTrac NV 246."7" GeroDisc – like the Grand Cherokee’s Quadra-Trac II NV 247."8" not currently used."9" viscous coupling.
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Oct 31, 2014 | 03:50 PM
#8
Looks like I should be ok to ~1000 ft*lbs from the motor by the time the 4L80E first gear is through with it...that should be ok.
Engine is built, transmission is waiting on a few parts...hope to be running next spring/early summer.
Engine is built, transmission is waiting on a few parts...hope to be running next spring/early summer.
Oct 31, 2014 | 03:51 PM
#9
That is the same setup I have. I bought a 261, but decided to go with the 149 for simplicity. I also found this info a while ago and saved it.
"Useful NV information::New Venture Gear T-case terminology:
The first number is the number of speeds:"1" = one speed (high range). Example – the NV 136. "2" = two speeds (high range and low range). Example – the NV 241.
The second number is the strength:The NV 241 is designated "4" in strength – tougher than the NV 231, but not as heavy duty as their largest T-cases, which go up to a "7" (eg, NV 273, for vehicles with a GVW of 17,500 lb).
The third number designates the type of T-case:"1" = part-time 4WD"2" = full-time 4WD with an open center differential plus lockable part-time option – like the Selec-Trac NV 242 of the Jeep Cherokee and Dodge Durango, or the Hummer’s NV 242HD AMG."3" electrically shifted."4" not currently used."5" Torsen-type differential."6" computer controlled multi-plate wet clutch, like GM’s AutoTrac NV 246."7" GeroDisc – like the Grand Cherokee’s Quadra-Trac II NV 247."8" not currently used."9" viscous coupling.
"Useful NV information::New Venture Gear T-case terminology:
The first number is the number of speeds:"1" = one speed (high range). Example – the NV 136. "2" = two speeds (high range and low range). Example – the NV 241.
The second number is the strength:The NV 241 is designated "4" in strength – tougher than the NV 231, but not as heavy duty as their largest T-cases, which go up to a "7" (eg, NV 273, for vehicles with a GVW of 17,500 lb).
The third number designates the type of T-case:"1" = part-time 4WD"2" = full-time 4WD with an open center differential plus lockable part-time option – like the Selec-Trac NV 242 of the Jeep Cherokee and Dodge Durango, or the Hummer’s NV 242HD AMG."3" electrically shifted."4" not currently used."5" Torsen-type differential."6" computer controlled multi-plate wet clutch, like GM’s AutoTrac NV 246."7" GeroDisc – like the Grand Cherokee’s Quadra-Trac II NV 247."8" not currently used."9" viscous coupling.
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