Chevy LS/LT/SB/BB to 8HP 45/50/70/75/90 N57 B57 B58 N63 N73 N74 Adapter Kit

Our popular LS → 8HP adapter has been updated to a new version.
In this model, the same adapter plate supports three different 8HP transmission bolt patterns, so you can use:

• 8HP50 (B58)

• 8HP70 (N63)

• 8HP90 (N73 / N74)

All on the same adapter.

Compatibility

The adapter kit allows the installation of the following BMW 8HP transmissions to Chevy engines:

• 8HP45 / 50 / 70 / 75 / 90

• B48

• N57

• B57

• B58

• N63

• N73

• N74

Engines:

• Chevy LS

• Chevy LT

• Chevy Small Block (SB)

• Chevy Big Block (BB)

Material and finish

Adapter plate and turbine adapter made from high-grade aluminum.
Available in natural color or black anodized with a premium finish.

• Adapter plate thickness: 35 mm

• Laser-engraved markings

Turbine adapter bolt patterns (PCD)

Includes three different bolt patterns for various Chevy and turbine configurations:

• 10.75" (6-bolt)

• 11.08" (6-bolt)

• 11.5" (6-bolt)

Note

⚠ There are two different versions of the turbine adapter depending on the transmission used.
Select the correct transmission version from the drop-down menu when ordering.

⚠ It is recommended to use an open or non-shrouded starter motor.
If a shrouded model is used, the adapter and transmission bell housing must be machined.

⚠ For SB/BB engines, the center guide and bolts differ from LS/LT models.
Specify the engine type when ordering.

⚠ The kit supports both long and short crankshaft snouts.
For the long snout version, the center guide requires shortening and modification – please contact us before ordering.

Adapter kit includes

• LS → 8HP adapter plate

• Turbine adapter and alignment pin

• Mounting hardware (bolts and alignment sleeves)
  → Select the correct version to get the right bolts

NOTE

(Order item – may not be in stock. Delivery time will be announced after order.)