TCI® Machined Flexplates For GM LSA & LS9 Engines

Two new SFI-approved machined flexplates offer bullet-proof strength and reliability for high performance GM LSA and LS9 engine applications

For the GM enthusiast who immediately starts cranking more torque and horsepower into his or her recently developed GM LSA or LS9 engine, engineers at TCI® have developed two new high performance machined flexplates. The factory flexplate behind an LSA or LS9 engine can often be problematic, even in stock applications, with issues of cracking and even breaking; so replacing it with a CNC-machined flexplate from TCI® is a good idea.

Engineered to prevent cracking and ring gear breakage commonly found in lesser quality flexplates, this new design includes an integrated early style GM torque converter pattern that gives the option of using an LS-series or earlier model transmission with the GM LS9 or LSA engine. In addition, the precision-ground .190" (3/16") thick, A36 steel plate material is .067" thicker than the original factory piece, which makes it much stronger and much more reliable. And finally, the most important feature is that these performance flexplates have been tested and are SFI 29.1-approved for strength and durability.

Dynamically balanced with converter bolt holes sized to the factory ½" diameter, each flexplate is electro-coated for protection from damaging vibrations and elements. They also feature a heavier-duty ring gear for extra strength. For more information about the TCI® Machined Flexplates for LSA or LS9 Engines or any other TCI® product, call us toll free at 1-888-776-9824, or visit us online at www.tciauto.com.


Quick Summary
Product: TCI® LS-Series Flexplates
Part Number: #399755 (LS9); #399756 (LSA)
Features & Benefits:
• Designed to prevent cracking & ring gear breakage in high performance GM LS9 & LSA engine applications
• Made from precision-ground .190" (3/16") thick A36 steel plate material
• Dual converter bolt pattern enables use with LS or early-style GM transmissions
• 29.1 SFI-approved for strength & durability
• Electro-coated & dynamically balanced w/ OE bolt sizes