TCI LS1 6-Bolt SFI Flexplate

TCI LS1 6-Bolt SFI Flexplate

The TCI LS1 6-Bolt SFI Flexplate is engineered for high-performance LS-powered applications requiring maximum durability and reliability. Constructed from high tensile strength material and built to SFI 29.1 specifications, this flexplate is ideal for street, strip, and racing applications.

Key Features

• SFI 29.1 approved
• Fits most Gen III and Gen IV LS-series Chevy engines
• Compatible with 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, and 7.0L V8 engines using a 6-bolt crankshaft flange
• 168-tooth flexplate
• Flexplate is .035" thicker than stock for increased durability
• Starter ring gear welded on both sides for additional strength
• Constructed from high tensile strength material to resist elongation and cracking
• Sized for stock 3/8" mounting bolts and can be drilled for 7/16" high-performance converter bolts

Converter Compatibility

• Drilled for 10.75" small GM converter bolt pattern
• Also drilled for 11.062" (281mm) LS-style converter bolt pattern
• Includes converter pilot adapter for use with older small block or big block Chevy (non-LS) converters

Additional Notes

• For 4L80E or TH400 applications using an 11.5" torque converter bolt pattern, use P/N 399754
• Does NOT fit 1999-2000 6.0L applications with a 0.400" extended crank flange and factory flat flexplate
• Does NOT fit 1999-2000 4.8L applications originally equipped with a manual transmission

Note: Professional installation is recommended to ensure proper fitment and torque specifications.