Gen III LS V8 to TH350/700R4 Trans Adapter Kit w/ Motor Mounts

The Speedway Motors Gen III GM LS V8 to TH350/700R4 Trans Adapter w/Motor Mounts provides a solution for mating GM non-LS automatic transmissions to Gen III LS engines. This comprehensive kit is designed for direct bolt-on fitment, allowing for the installation of transmissions such as the TH350, 700R4, 200-4R, or Powerglide behind 1997-2007 Gen III LS engines with standard 6-bolt crankshafts. The adapter kit includes essential components for a successful swap, featuring an LS-style 168-tooth flexplate with integrated dual torque converter bolt patterns (10.75" and 11.066"). Also included are the necessary flexplate bolts, torque converter bolts, a torque converter adapter sleeve, and motor mount adapters. The flexplate is SFI-rated at 29.1 and designed for internal engine balance. Customer feedback highlights the product's practical use in LS swaps, with many noting easy installation. While some minor modifications may be needed for a perfectly flush fit, the kit is praised for its consistency and accurate description. Users report reliable performance when used with 5.3L LS motors and TH350 transmissions, indicating confidence in Speedway Motors' quality over competing brands.