CHEVY LS/LT/SB/BB to BMW 8HP Adapter Kit (45/50/70/75/90)

Upgrade your Chevrolet LS, LT, SB, or BB engine with this adapter kit to fit BMW 8HP automatic transmissions (8HP45, 8HP50, 8HP70, 8HP75, 8HP90), including B48, N57, B57, and B58 gearboxes. Perfect for performance swaps, high-torque builds, and custom projects where you want the smoothness and strength of a BMW 8HP transmission.

Key Features

• Adapter kit for CHEVY LS, LT, SB, BB engines to BMW 8HP series transmissions
• Supports BMW B48, N57, B57, and B58 gearboxes
• Three converter bolt patterns on the adapter for multiple Chevy engine & torque converter setups:
• 10.75 inch (6-bolt)
• 11.08 inch (6-bolt)
• 11.5 inch (6-bolt)
• Adapter plate thickness: 35 mm for proper alignment
• High-grade aluminum construction with natural anodized finish
• Precision CNC-machined for a perfect fit and long-term reliability

Installation Notes

• Recommended to use a non-shrouded starter for proper clearance
• If a shrouded starter is used, minor trimming of the adapter or bellhousing may be required
• Designed for professional installation or experienced DIY mechanics

Why Choose This Adapter?

• Allows Chevy engines to pair with BMW 8HP transmissions for high-performance swaps
• Supports multiple torque converter bolt patterns for flexibility
• Durable and premium quality construction
• Perfect for professional engine swaps, custom builds, and high-torque applications