LS1, LS2, LS3, Conversion Flexplate to TH400/TH350/Powerglide Trans, Small Bolt Pattern, 168 Tooth Count, 5.7L, 6.0L, 6.2L, LS, Chevy, Chevrolet

TCI 399753 Flexplate. Conversion Flexplate for LS1, LS2, LS3 engines to TH400, Powerglide Transmissions & Converters. 

This machined flexplate is for GM LS1 LS2 LS3 Series engines (4.8,5.3,5.7,6.0). SFI 29.1 approved and internally balanced. Features 11.1", (small bolt circle). 168 Tooth Count ring gear. 

Suits LS to TH350 & TH400 & Powerglide Conversions when using the small bolt pattern. 

TCI 399753 Specs:

• Suits: LS Engines (6 bolt cranks LS1, LS2, LS3) to The small bolt pattern Converters in TH400/Powerglide/TH700R4 & 4L60e/6L80e transmissions. 
• Bolt Patterns: 10.75" & 11.062"
• SFI Rate: YES SFI 29.1
• Pilot Extension: Yes - Included spigot adapter. 
• Hardware included: YES - crank bolts
• Fitment Note: Will not fit LS7 cranks/ 8 Bolt. Will not fit 1999-2000 6.0L (US) LS engines with 0.400" extended flange & flat flexplate. 

TCI machined flywheels are .140" thick and built to handle even the toughest applications. Constructed from the same A514 Blanchard ground steel and neutral balanced with 168-tooth (Chevy) and 166-tooth (Pontiac) starter rings. These machined flywheels are designed for specific application engines. These machined flexplates are a "must have" for moderate to serious performance applications.

TCI 399753 Notes: 

SFI 29.1 approved. Fits most LS-series Gen III and Gen IV Chevy 4.8, 5.3, 5.7, 6.0, 6.2 and 7.0 liter V8 engines using a 6 bolt crankshaft flange. Drilled for 10.75" small GM converter bolt pattern and also 11.062" (281mm) LS style converter bolt pattern. Includes a converter pilot adapter that is needed if you are using a converter originally made to fit older small or big block Chevy (non-LS). Flexplate is .035" thicker than stock and the starter ring is welded to both sides of the flexplate for additional strength. Constructed from a high tensile strength material this flexplate resists elongation and cracking. All 168 tooth flexplates are sized for stock 3/8" mounting bolts and can be easily drilled for 7/16" diameter high performance torque converter applications. for 4L80E or TH400 applications that have an 11.5" torque converter bolt pattern, use P/N 399754. This will not fit 1999-2000 6.0L applications with 0.400 in. extended crank flange and came with flat flexplate. This will not fit 1999-2000 4.8L applications that originally came with a manual transmission.