Product Description
Michigan Motorsports High Strength "Flat" Flexplate
Fits 1999–2000 Long-Crank 6.0L LQ4 Engines | SFI 29.1 | 168-Tooth | Internal Balance | 6-Bolt Flange
This Michigan Motorsports high-strength “Flat” Flexplate is the ultimate upgrade for 1999–2000 long-crank 6.0L LQ4 engines. OEM LQ4 flexplates are known to crack—even in stock applications—which is why this upgraded chromoly steel design was developed for superior durability. Built thicker than factory units and engineered with a 4mm reinforced centerpiece and welded ring gear, this flexplate delivers the reliability needed for towing, off-road use, drag racing, and high-performance LS truck builds. SFI 29.1 certified for strength and safety.
Key Features
- High-Strength Construction: Made from premium chromoly steel and built thicker than OEM to eliminate cracking under heavy load or high-performance use.
- SFI 29.1 Certified: Meets strict performance and safety standards for racing, towing, and high-stress operation.
- 168-Tooth Ring Gear: Features welded-on gear for improved durability and resistance to ring gear separation or failure.
- “Flat” Spacing Design: Specifically engineered for 1999–2000 long-crank 6.0L LQ4 engines to maintain correct converter spacing and engagement.
- Wide Converter Compatibility: Supports multiple GM bolt patterns, making it ideal for stock and aftermarket torque converters.
Key Fitments
- Engines: 1999–2000 6.0L LQ4 Long-Crank Engines. Also fits 2001–2006 6.0L truck engines when used with the factory bolt-on crank spacer (GM #12563532 or Michigan Motorsports #MMCRNKADPT).
- Platforms: GM trucks, vans, SUVs, and LS swap platforms utilizing long-crank LQ4 engines or LS-based trucks running 4L80E with crank spacers.
- Notes: Internal balance design. Requires correct flexplate torque procedure. Verify converter depth when used with transmission swaps.
Converter Bolt Patterns
- 3 x 10.75" GM
- 3 x 11.06" GM
- 3 x 11.50" GM
- 6 x 11.06" GM
- 6 x 11.50" GM
Transmission Compatibility
- TH350, TH400, 700R4, 4L60E, 4L80E
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Perfect
The product that I ordered was on time delivery and the flexpate is the correct one I needed...the other places didn't have what I wanted but ya'll had it in stock and got to me quickly.
