Specifications

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AUTOMATIC TRANSMISSIONS:
We now offer rebuilt automatic transmissions with our adapter kits installed. To stand up to the stress & strain put
on most 4WD vehicles, these transmissions are built with the best heavy-duty components available. We offer most
makes and models for GM, Ford, and Jeep vehicles. These transmissions are all dyno tested and come with a 2 year
or 24,000 mile warranty. Call for applications and pricing.
POWERGLIDE to Dana 300 Adapter: The GM Powerglide automatic has become a popular transmission for the rock crawling
rigs. We offer a new cast aluminum adapter and crossmember mount. Our kit is designed to couple the Powerglide to the Dana
300 using a new 27 spline Dana 300 input shaft. When coupling the Powerglide to the Dana 300, the adapter kit requires a shorty
27 spline output shaft to be used in the transmission. A few sources to obtain this shaft would be Hughes Performance or B & M.
Part No. 50-9205
TH350: This GM automatic was commonly found stock in vehicles from 1969 to 1981. It was used in both the 4WD pickups and
2WD car applications. These transmissions are identical except when it comes to the output shaft stickout length. The 4WD
transmission used an adapter to bolt this transmission to its stock transfer case. With this adapter removed,
the stock output shaft protrudes from the back of the transmission case approximately 1”. On 2WD vehicles,
these transmissions used 3 different tailhousings. The lengths of these tailhousings are 6”, 9”, and 12”. The
output shafts lengths correspond with these tailhousing lengths. This transmission is one of the most popular
choices for engine and transmission conversions due to the overall length of 21-1/2”. The 1st gear ratio is
2.52:1; 2nd 1.52:1, and a 3rd gear ratio of 1:1. When converting with this transmission, we recommend that
you cut the two tabs as illustrated. This allows for exhaust and firewall clearance. When using this transmission
on Jeeps that have a right hand front driveshaft, the transmission should be offset 1” to the driver’s side for
front driveshaft clearance.
The adapters we offer for this transmission are designed for the short 4WD output shaft. If you obtain a 2WD
transmission then you would be required to install a new rear output shaft. We offer a kit that will supply you
Jeep NV3550 Transmissions: The NV3550 transmission is an ideal transmission swap for the early Jeeps. This 5 speed
is rated at 300 ft./lbs. at 7200 GVW. The weight of this 5 speed is 97 lbs. The gearing of this 5 speed is as follows: 1st 4.01:1;
2nd 2.32:1; 3rd 1.40:1; 4th 1.00:1; 5th 0.78:1, and Reverse 3.57:1. The NV3550 transmission works well as a replacement
transmission for the CJ7s or as a great transmission when performing an engine swap. The NV3550 is approximately 2-1/4” longer
than the stock Jeep T5, T4, and SR4 transmissions, and 4-3/4” longer than the T176 transmission. When retrofitting the stock
transmission with the NV3550, driveline modifications are to be expected. We currently manufacture bellhousing adapter plates
or a full conversion bellhousing to couple the NV3550 to the GM V6 & V8 blocks, the Ford V8 blocks, and the Jeep blocks. Depending
on the choice of engine along with the placement in the frame rails, driveshaft modifications may not be necessary.
Even though the NV3550 has the correct output shaft spline count to fit to the Dana 300 transfer case and the correct indexing, the
rear bolt pattern is slightly rotated from that of the Dana 300. The transmissions we sell are modified on the tailhousing to accept
the stock Dana 300 bolt pattern rotation. If you obtain your own NV3550 transmission, then we would recommend our adapter kit
50-8604. This kit is .750” long and has a new .750” longer 23 spline input shaft for the Dana 300 transfer case.
NV3550 to Dana 300 Optional Items:
50-8604 .750” 23 spl. adapter kit 716007 Trans mount
Jeep AX15 Transmissions: The overall transmission case length is 24.000”. The output shaft on this transmission is 23 spline
and protrudes approximately .400”. This transmission is normally found coupled to the AMC 4.0L 6 cylinder engine and seems to
be one of the better transmissions Jeep used, being very capable of handling the horsepower and torque of a V8 engine. The adapter
kit we offer for this transmission is .750” thick and allows for a couple of rotations of the Dana 300 transfer case.
AX15 to Dana 300 Optional Items:
50-8603 .750” 23 spl. adapter kit 716007 Trans mount
Jeep AX5 / Peugeot & AW4 Transmissions: We have had request for the Dana 300 to fit up to these late model Jeep
transmissions. This kit is designed for the AX5 transmission, but will fit the other two with some modifications to the output shafts.
The adapter kit we offer for these transmission is .750” thick and allows for a couple of rotations of the Dana 300 transfer case. This
kit comes with a new 21 spline Dana input shaft.
AX5 to Dana 300
50-3021 .750” 21 spl. adapter kit
transmission types & t/c adapters (1980-86)