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B&M 50231 Transmission Shift Improver Kit for 1970-1982 Ford C4

(Ford F-150 1977-78, Mustang 1970-81, F-250 1970-74, 1977, Bronco 1970-77, Thunderbird 1971, 1977-81, F-350 1970-74, 1977, Maverick 1970-77 + 52 more models)

Manufacturer

Picture for manufacturer B&M

Part Number

50231
13 reviews
Sale Price

$478.95

2 left at this price

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Usually delivered within 2 days

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Product Details

The B&M 50231 Transmission Shift Improver Kit is engineered specifically for 1970-1982 Ford C4 automatic transmissions. This comprehensive kit transforms transmission performance by delivering firmer, quicker shifts and reducing slippage for improved acceleration and durability.

Kit Includes:

  • Replacement valve body components for optimized hydraulic flow
  • Modification components including springs and pressure regulators
  • Complete overhaul gasket set for proper sealing during installation
  • High-performance friction materials for enhanced holding power

This shift kit addresses common C4 transmission weaknesses by recalibrating shift timing and line pressure. Installation requires disassembly of the transmission oil pan and valve body. The result is reduced shift overlap, minimized clutch and band wear, and noticeably improved throttle response. Ideal for street performance applications, towing, and vehicles requiring more positive shift engagement than stock.

Products specifications

Fits

Ford F-150 1977-78, Mustang 1970-81, F-250 1970-74, 1977, Bronco 1970-77, Thunderbird 1971, 1977-81, F-350 1970-74, 1977, Maverick 1970-77, Galaxie 500 1970-74, F-100 1970-81, F-250 Pickup 1970-74, 1977, Fairlane 1969-70 + 48 more models

Trans Model

Ford- C- 4 (Auto) 3 Speed

Title

B&M 50231 Trans Kit, 70-82 C4 Transmission

Prop 65

Yes

California Proposition 65 Chemical Name 1

Cadmium and cadmium compounds

California Proposition 65 Chemical Name

Cadmium and cadmium compounds

Gasket Or Seal Included

Yes

Trans Year

1979

Trans Year

1980

Trans Year

1981

Trans Year

1982

Trans Year

1974

Trans Year

1971

Trans Year

1976

Trans Year

1978

Package Contents

Friction materials, a complete overhaul gasket set, Transpak modification components including special replacement valves and springs, drain plug installation kit, fluid separator plates, valve body modifications, complete gasket overhaul set and seals, new filter, clutch plates and intermediate plates, a drill bit and a new band

Trans Year

1977

Trans Year

1970

Trans Year

1972

Trans Year

1975

Brand

B&M

Category

Transmission

Emission Code

5

Gasket Included

Yes

Instructions Included

Yes

Part Type

Automatic Transmission Shift Kit

Product Type

Automatic Transmission Master Repair Kit

Sub Category

Service Kits

Warning

California Proposition 65

Excellent. Very user friendly. I would use Autoplicity again for my automotive needs and refer friends and family, also.

Only place I could find this part. Fast and easy shipping.

Fast service

Product arrived very quick. So far i'm very impressed.

Good quality product and fast delivery!

Great price and fast shipping! Will shop again.

Straight forward and easy.

Easy shopping so far

Super easy to browse web site and find the product I wanted.<br>The price was unmatched.<br>Shipping was fast and cheap.<br>Super shopping experience.

Great prices, helpful customer service. Ordered 2 by mistake. And they got it cleared up real fast. Saved over $80 off retail. Will be ordering from the, again!!!!! <br>

Best price (bike rack), fast service, will buy again from Autoplicity.

Rather amazing and uneventful service in this day and age. Ordered a Thule bike rack for my Nissan Murano. It was in stock (unusual for high-end specialty products), shipped the next day, and was on my doorstep in a few days (excellent for a 60 lb. large box). I'd buy anything from these people without any reservation. AND, your order is insured - completely superfluous. Oh, and did I mention, the lowest price I could find ANYWHERE, and not by a few dollars - a lot.

Excellent service with the actual stock on hand, shipment was made the next day and a tracking number was provided. I have tried 2 other online supply stores which don't know what they have in stock.

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