Crank Spacer LS Eng. to TH300/TH400/700R4/200R4

The Crank Spacer LS Eng. to TH300/TH400/700R4/200R4 is a precision-engineered adapter designed for LS engine swaps into vehicles originally equipped with Turbo 300, Turbo 400, 700R4, or 200R4 transmissions. This component addresses the mechanical challenge of aligning modern LS engine cranks with legacy transmission bell housings, making it ideal for enthusiasts retrofitting classic vehicles.

Manufactured by Straub Technologies Inc., this crank spacer is precision-machined to exact tolerances, ensuring proper alignment between the engine and transmission. It compensates for the axial offset found in LS-to-vintage-transmission installations, allowing the torque converter to seat correctly while maintaining bell housing bore alignment. This design helps prevent vibration, noise, and premature wear on driveline components.

Engine builders and swap technicians targeting four-speed automatics in vehicles like second-generation Camaros, Firebirds, C3 Corvettes, Novas, and full-size GM trucks will find this adapter essential. Its compact design, weighing approximately 0.97 lbs, integrates seamlessly into tight engine bays without requiring extensive modifications.