Drivetrain Automatic Transmissions and Components

B&M

TRANSPAK 68-81 TH-350

$375.50

SKU: B00M 30228

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The B&M Transpak Automatic Shift Improver Kit, MPN 30228, enhances performance and extends the life of 1968-1981 GM TH350 and TH375B/M38 automatic transmissions by allowing shift point calibration, providing firmer shifts, and offering additional driver manual control. It includes components for two stages of performance: Stage 1 for heavy-duty or normal use and Stage 2 for high-performance street applications. Transmission removal is not required for installation.

Fitment

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Specifications

BrandB&M
Part NumberB00M 30228

Videos

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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