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

The Crank Spacer LS Eng. to TH300/TH400/700R4/200R4 is an essential component for enthusiasts performing engine swaps or upgrading drivetrain configurations. It bridges the gap between modern LS-series engines and legacy GM automatic transmissions, ensuring proper engagement and alignment. This adapter allows builders to retain reliable, high-torque gearboxes while leveraging the power of contemporary small-block architecture. Whether you are building a dedicated track car or a high-performance street machine, this spacer provides the necessary geometry for a successful swap.

Constructed from high-strength steel with a natural finish, this Straub Technologies flexplate adapter is engineered for durability and precise fitment. The Crank Spacer LS Eng. to TH300/TH400/700R4/200R4 compensates for the shorter crankshaft flange found on LS engines compared to older Gen 1 or Gen 2 small blocks. By providing the necessary offset, it supports the torque converter pilot and prevents premature wear or mechanical failure during high-performance operation. Its robust steel design ensures it can withstand the torsional stresses associated with high-horsepower LS builds.

This component is specifically designed for use with TH300, TH400, 700R4, and 200R4 transmissions when mated to an LS-based powerplant. The Crank Spacer LS Eng. to TH300/TH400/700R4/200R4 is a critical item for drag racing, street rod builds, and heavy-duty towing applications where transmission stability is paramount. Installation is straightforward for professional mechanics and experienced DIYers looking to complete a seamless drivetrain integration. Review the specifications to ensure compatibility with your specific flexplate and torque converter setup before beginning your project.