Specifications

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4L60E: This transmission is identical to the 700R/4L60 except that it is an electronically controlled transmission. GM manufactures
this transmission in two versions. Both these transmissions use a reluctor ring connected to the GM engine computer for proper
shifting points. The first version is a mirror image of the 700R/4L60, but it requires the reluctor ring. The second version is found
in most of the 1997 & newer vehicles. The case and bellhousing are no longer cast together (now a removable bellhousing design).
This transmission no longer has the square bolt pattern on the output side, but is equipped with a hex bolt pattern similar to a TH400.
This transmission is 21-7/8” long, and is used in both 2WD & 4WD vehicles. We offer kits to fit both the early and late model
transmissions. These kits come with both a reluctor ring and sensor in the adapter housing.
4L60E to New Process T/Cs
50-0402 3.650” 2WD or 4WD early style 4L60E to 23 spline NP transfer case
50-0403 3.650” 2WD or 4WD early style 4L60E to 21 spline NP transfer case
50-0430 3.00” 2WD or 4WD removable bellhousing 4L60E to 23 spline NP transfer case
50-0431 3.00” 2WD or 4WD removable bellhousing 4L60E to 21 spline NP transfer case
50-0434 4.10” 4WD removable bellhousing 4L60E to NP231 T/C up to 1994 27 spl.
50-0435 4.10” 4WD removable bellhousing 4L60E to NP231 T/C 1995 & newer 27 spl.
Optional Items: 716008 Trans mount (or) 716021 Trans mount (or) 716017 Trans mount
We also offer two short style adapters for the 4L60E transmission to the Atlas transfer case. P/N 50-9300 is only .600” thick and
couples the 4L60E transmission to the Atlas 2 speed transfer case. P/N 50-9305 is 1-5/8” and couples the 4L60E transmission
to the Atlas 4 speed transfer case. This kit can work with a NP231; however, a T/C shifter bracket must be fabricated.
We offer a stand alone computer system that operates the 4L60E transmission. P/N P4L110 allow this transmission
to be installed into numerous applications. One new application is a full bellhousing to fit this transmission to the Jeep 4.0L 6 cylinder
engine retaining the stock crank trigger, P/N 712596. This kit will only fit the 4L60E transmission with the removable bellhousing.
Please call for more information on this new part.
TH400: This transmission is known as the Heavy Duty version of the TH350. We manufacture a full line of adapters to utilize this
transmission. The O.A.L. is 24-1/4” long. It has a 1st gear ratio of 2.48:1; 2nd 1.48:1, and a 3rd gear ratio of 1:1. We offer a 1.25”
long adapter kit for the TH400 transmission. These kits are supplied with a new output shaft with either a 21 or 23 spline output.
TH400 to New Process T/Cs Optional Items:
50-6401 1.25” 21 spline TH400 to New Process T/C adapter 716008 Trans mount (or)
50-6402 1.25” 23 spline TH400 to New Process T/C adapter 716021 Trans mount (or)
716017 Trans mount
C4: This 3 speed transmission was used in Ford cars & trucks from 1964 to 1981. We recommend obtaining a 1970 & newer
transmission for conversions. The transmission case length is 11.180”, and with the bellhousing measures 17.00”. This
transmission was used up against small block Ford engines. The adapter we manufacture will require the installation of a new
23 spline output shaft to couple to the New Process transfer case. This is the most popular transmission when converting to a Ford
engine. The 1st gear ratio is 2.46:1; 2nd 1.46:1, and a 1:1 3rd gear ratio. The adapter for the C4 transmission includes a 6.25”
aluminum adapter housing and a new C4 output shaft. This kit also includes a seal, gasket, and necessary hardware.
C4 to New Process T/Cs Optional Items:
50-8100 6.25” 23 spline C4 to New Process T/C adapter kit 716008 Trans mount (or)
(21 spline transfer cases can use this adapter by changing out the input gear) 716021 Trans mount (or)
716017 Trans mount
AOD & AODE: This Ford automatic overdrive 4 speed is drastically different in appearance than any of the C-series transmissions.
This integral (one piece) transmission was introduced in 1980, and found in the F-series pickups behind small blocks. The transfer
case adapters we manufacture for this transmission require the installation of a new output shaft. The AOD was used up until 1993,
in cars & trucks. The 1980-87 (early) transmission main shaft was different than the 1988 & up (late) transmission main shaft. These
shafts use different oiling holes and, if interchanged, could cause improper shifting or transmission damage. This transmission
is becoming very popular for many conversions. We offer adapters for most early and late transmission applications. The
transmission O.A.L. is 20.50” long. It has a 1st gear ratio of 2.40:1; 2nd 1.47:1; 3rd 1:1, and the 4th gear is a 33% overdrive.
The
AODE (4R70W) transmission is similar to the above AOD transmission and was used in rear wheel drive vehicles starting in
1991. The adapter housing for the AOD transmission will fit the AODE; however, the output shaft of the AODE is different with reference
to the oiling holes. Since the AODE does not have a governor, the oil supply line must be plugged. Our kits for the AOD can be used
on the AODE transmission, provided that you obtain a few components from Ford. The necessary components are stocked by us
under P/N 716057. These kits come with a new 23 spline output shaft and a 6.37” aluminum adapter housing. This adapter housing
is a stock Ford 4WD adapter.
AOD & AODE to New Process T/Cs
50-2901 6.37” 1988 & newer transmission 23 spline AOD to NP T/C adapter kit
50-2902 6.37” 1987 & earlier transmission 23 spline AOD to NP T/C adapter kit
50-9300
transmission to t/c adapters (1987 & newer)