B&M Shift Improver Kit BM70239 for GM TH700R4 / 4L60 Auto

PRODUCT OVERVIEW

The B&M BM70239 Shift Improver Kit recalibrates 1982–1993 GM TH700R4 / 4L60 hydraulic automatic transmissions. It increases shift firmness, reduces shift overlap and improves overall transmission performance for street, towing and street/strip applications. This kit is not compatible with GM 4L60E (electronic) transmissions.

PERFORMANCE OPTIONS

• Heavy Duty setup: Provides firm, positive shifts without sacrificing driver comfort. Suitable for daily driven vehicles, performance street use and towing.
• Street/Strip setup: Delivers very firm, aggressive shifts you can feel, with the potential to chirp the tires under hard acceleration. Intended for high-performance street/strip driving and competitive use.

KEY FEATURES & BENEFITS

• Suitable for towing, performance street or street/strip use
• Helps eliminate soft, sluggish shifts
• Reduces shift overlap for improved transmission life
• Provides crisp, positive gear changes
• Engineered for relatively easy installation with common tools

COMPATIBILITY NOTES

• For 1982–1993 GM TH700R4 / 4L60 hydraulic automatic transmissions
• Not suitable for GM 4L60E (electronic) transmissions
• Always confirm transmission type and part number before purchase and installation

PART DETAILS

• Brand: B&M
• Part number: BM70239
• Application: GM TH700R4 / 4L60 non-electronic automatic transmission