Specifications

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T19 Ford Truck 4SP: This transmission looks identical to the Ford T18, and the case length is the same. The 1st gear ratio
is 5.11:1 1st; 2nd 3.03:1; 3rd 1.79:1, and 1:1 4th gear ratio. These transmissions were used in Ford pickups 1974-88. The first gear
on this transmission is synchronized, which is the biggest advantage over the T18. The adapter kits we manufacture for this
transmission require a new main shaft. This shaft looks identical to the Ford T18, except it has a snap ring groove for the 1st gear
synchronizer. This kit includes a new T19 main shaft and a new 1” thick adapter plate that couples the transmission to the Dana
18/20 transfer case. These adapter kits also have the indexing hub to the transfer case as part of the adapter plate, so an index
retainer is not needed.
Ford T19 to Dana 18/20 Optional Items:
50-6700 1” 6 spl. large index adapter 716003 Trans mount or stock Jeep T18 mount
50-6701 1” 6 spl. small index adapter
NP435 Ford Truck 4SP: We manufacture many adapters
for the Ford version of the NP435. These adapters do not
work on the Chevy or Dodge NP435. This transmission
has a case length of 10.875”. The 1st gear ratio is 6.69:1;
2nd 3.34:1; 3rd 1.66:1, and a 1:1 4th gear ratio. This
transmission was used in Ford pickups 1969 to 1979. It
is easily identified by an aluminum shift cover. This transmis-
sion is available with two front input shaft lengths. The 6-1/2” input
shaft stickout length is the ideal version to look for. This kit is 3.325”
long and has a new main shaft that must be installed into the
transmission. This kit is only offered with a 6 spline output to fit
the Dana transfer cases. This kit is supplied with the proper
gaskets and bolting hardware.
NP435 to Dana 18/20 Optional Items:
50-6102 3.325” main shaft 6 spl. adapter kit 716302 Sealed bearing 716001 Large hole index retainer
716003 Trans mount (or) 716002 Small hole index retainer
716021 Trans mount
GM NV4500: (1993-94) During the first two years of the NV4500, Chevy offered this 5 speed with a 6.34:1 1st gear; 2nd 3.44:1;
3rd 1.71:1; 4th 1:1 ratio, and a 27% overdrive. It was also the first year that Chevy changed the bellhousing-to-transmission bolt pattern.
This transmission is ideal when converting your vehicle, providing an ultra-low 1st gear. GM, however, only produced this particular
ratio during these years. The major complaint of this 5 speed was stiff shifting and noise in 3rd gear. (1995): This transmission
is identical to the 1993-94 transmission, except the 1st gear ratio had been changed to 5.61:1; 2nd 3.04:1; 3rd 1.67:1; 4th 1:1 ratio,
and a 27% overdrive. The noise and shifting problems had been corrected. (1996-2005): This transmission has the same gear
ratio as the 1995 version. Chevy once again changed the bellhousing-to-transmission bolt pattern and went to a larger bellhousing
index diameter. This Chevy NV4500 has the same bellhousing-to-transmission bolt pattern as the Dodge NV4500. These
transmissions use a GM internal release bearing. All the NV4500 transmissions have a 12.375” case length. This kit includes a
new adapter housing that houses the 5th gear assembly. We use a spud shaft for this transmission to couple to the 6 spline gear
of the Dana 18/20 transfer case. The spud shaft will only fit the GM NV4500 output shaft. The stock output shaft must be cut to a
specific length to work in this kit. Some transfer cases require the stock linkage to be modified for clearance on the NV4500 case.
GM NV4500 to Dana 18/20 Optional Items:
50-0210 5.87” spud shaft 6 spl. adapter kit 716302 Sealed bearing
716001 Large hole index retainer
716002 Small hole index retainer
716008 Trans mount
Jeep T176 and 1980 & Newer Jeep Transmissions: We offer transfer case adapters to fit both the Jeep T176 and most
Jeep 5 speeds and Jeep automatics. The T176 kit consist of a new main shaft and a .750” thick adapter plate. The 4 speed
transmission is a new short setup for the early Jeeps. The universal kit that fits any Jeep transmission from 1980 & newer is a spud
shaft kit that couples to the newer Jeep 21 or 23 spline output shaft. The adapter in this kit bolts to the circular pattern found on these
transmission. The adapter is just over 1” thick and gives you the option to fit a good 5 speed into your vehicle. Please be aware
that some of the later Jeep transmissions were fairly long and may cause some driveshaft length issues. All these kits come with
the necessary gaskets and hardware. You will need to order the index retainer for your transfer case
T176 & 1980 & UP Jeep Transmissions to Dana 18/20 Optional Items:
50-9902 .750” main shaft 10 spl. adapter kit 716302 Sealed bearing
50-8601 1.012” spud shaft 6 spl. x 21 spline female adapter kit 716001 Large hole index retainer
50-8602 1.012” spud shaft 6 spl. x 23 spline female adapter kit 716002 Small hole index retainer
dana 18 & 20 t/c adapters (1941-79)