B&M Transpak - GM TH350 Transmissions

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B&M 30228

The B&M® Transpak is the next step up from the B&M Shift Improver kit. It has all the features in the Shift Improver kit, plus it provides additional driver manual control (GM TH-400, 350, Ford C-6 and Chrysler Torqueflite only). B&M® Transpak™ kit for 1968-1981 GM TH350 automatic transmissions. Most stock automatic transmissions won't downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear you're in. With the Transpak, you can downshift at any speed, and you can hold the transmission in first gear to any speed that you want! This is an asset when you've got a modified engine, and you want additional RPMs, or you're towing a trailer or driving heavy loads downhill. Stage 1. Heavy Duty is for street rods, normal passenger vehicles or other heavy duty use. Firmer shift feel but not harsh. Improves transmission performance and life dramatically without loss of comfort and offers normal automatic operation when in Drive. Stage 2 is for Hi-Performance street use. Essentially the same as Heavy Duty mode except shifts are much quicker. Retains full automatic features and standard shift points with selector in Drive. Notes: Does Not Fit GM TH350C transmissions.

  • Recalibrate's GM TH350 Automatic Transmissions
  • Full Manual Control on Most Transmissions
  • Over 65 Years of B&M Quality
  • Improves Transmission Life
  • Optimum Performance
  • Firmer shifts
More Information
PartB&M 30228
Manufacturer Part Number30228
UPC19695302283
BrandB&M
Emission Code5
Part TypeAutomatic Transmission Valve Body Kit
Typeproduct
Item ReturnsThis item can be returned

Automotive Item GradeHigh Performance
BrandB&M
California Proposition 65 Chemical NameCadmium and cadmium compounds
California Proposition 65 RequiredYes
Emission Code5
Gasket IncludedYes
Instructions IncludedYes
Manual ControlPartial
Product TypeAutomatic Transmission Valve Body Kit
WarningCalifornia Proposition 65

  • Gaskets
  • Drill Bits
  • Seals
  • Retaining Ring
  • Brass Plug
  • Shift Valve

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