![]() ![]() And this chapter will break down everything. Now, it’s time to know what causes the transmission bad and how you can solve them. 3 Reasons Behind A Bad Transmission Governor & Their Solutionsįrom above, you learned about the signs of a bad transmission governor. You can also have trouble upshifting in the event of acceleration.Also, it will be a lot more difficult even when you try to downshift manually. You find downshifting a bit challenging when you try to slow down your car.The inside of the valve may get scored and hang up from the grit & clutch.Check the plastic gear to see whether it gets cracked or broken.The weight pin or hitch pin and pinholes will wear out.How do I know if my transmission governor is bad? If this question appears in your mind, the following signs will let you know about a bad transmission governor. Symptoms Of A Bad Transmission Governor Th350 As it is attached to the output, the governor will spin faster as fast as the car moves. It’s actually a clever device that informs your car transmission how fast the vehicle is going. You can use the governor to tune the automatic shift points by changing the weight and the springs. Conclusion What Does The Governor Do On A TH350?.What would cause a Turbo 350 transmission not to shift?.Gear On The End Of The Governor Gets Broken 3 Reasons Behind A Bad Transmission Governor & Their Solutions.Symptoms Of A Bad Transmission Governor Th350.It is common to adapt NP203's to transmissions that didn't originally have them for use in our 203/205 Doubler systems.īelow is a break down of the parts on a NP203:īelow are some measurements on the NP203, these measurements should be used for approximation only. The input gear on the NP203 used many different spline counts depending on application:ġ0 spline female: Rare option in '74-'75 GM trucks, behind SM465Ģ3 spline female: Found behind all transmissions for fullsize '75-'79 Dodge trucksĢ7 spline female: Common behind TH350’s in '73-'79 GM trucksģ1 spline female: Rare in Ford trucks in the '70’sģ2 spline female: Came in '77-'79 Chevy K20 and K30 trucks, behind TH400ĭivorced 32 spline male: Rare in Ford trucks in the '70’s, possibly early Dodge as wellĮach application used a unique adapter as well, there is a different adapter for each transmission. While it looks slightly similar to a 205, the gear box on the front and the longer tailhousing are the easiest giveaways. ![]() It will list the model number, the manufacture date and the gear ratio. The model tag (if it still exists) will be found on the front of the chain case above the front output shaft. The shifter is a somewhat complicated box that actuates the 2 levers on a single shaft on the side of the range box section of the 203.Ĥ. The overall length is about 22-23" from the face of the case to the rear output yoke centerline.ģ. The front 2 sections are cast iron, the back 2 sections are typically aluminum.Ģ. The transfer case is made up of 4 sections bolted together, a range box (the gear reduction we use for the Doubler kit), the chain case which houses the chain drive to the front driveshaft output, the differential housing, and the output housing. The NP203 is identified by several features:ġ. In this configuration the 203 operates like more conventional transfer cases in that it's either in 2WD or 4WD and when in 4WD the power is evenly split from front to rear. Shift positions are: High, Lo, High Lock, Low Lock and Neutral.Ī popular modification to the 203 was to install a "part time" kit to eliminate the differential and slightly increase fuel economy. This was made possible through use of a differential in the back of the 203 that let the front and rear driveshafts turn at different speeds as just as a diff in an axle lets each axle shaft turn at a different speed.įor off road use, the 203 had a "lock" position in which the differential was locked making the front and rear outputs spin at the same speed (like a normal part time transfer case). The NP203 were originally a full time 4WD case, meaning all 4 tires receive power at all times. The New Process 203 came in all full size '75-'79 Dodge trucks The New Process 203 was a rare option in '70's Ford trucks. The New Process 203 was a common option in '73-'79 GM trucks. ![]()
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