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LS V8 Flexplate Adapter Kit, Compatible with 1997-2007 GM Gen III LS1/LS2/LS6/4.8/5.3/6.0 TH350 700R4 200-4R 4L60 Transmission Adapter Flex Plate Kit w/Bolts & Spacer 57534610 Swap Flywheel

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$79.99

$ 30 .99 $30.99

In Stock
  • 【Wide Compatibility】Flex plate adapter kit works with 10.75" and 11.066" (11.1") torque converter bolt patterns, ensuring compatibility with a range of torque converters for seamless integration.
  • 【Cost-Saving】Designed to work with the factory LS starter, this adapter flexplate helps reduce conversion costs by utilizing existing components.
  • 【Fitment】Trans adapter kit fits for 1997-07 GM LS1/LS6 engines (up to '09 for LS2) and 4.8/5.3/6.0 truck engines including L33, L59, LM4, LM7, LQ4, LQ9, and LR4. Adapts all of these engines to TH350, 700R-4, 200-4R, 4L60, and Powerglide transmissions that originally came behind a non-LS engine (such as a SBC or BBC V8).
  • 【Note】May not work with some 1999-2000 LQ4 6.0 LS engines, specifically ones that came with a 4L80E automatic as they require a flat flexplate due to the "tall" crank flange.
  • 【Package Include】1x trans adapter flex plate 575-34610, 6x Gen III LS flex plate bolts 101-2442901, 1x LS torque converter adapter sleeve 575-18346, 1x torque converter bolt Kit. Providing all you need for an effortless Gen III LS swap.


Function

  • Make your Gen III LS swap a breeze with this complete adapter kit for early GM automatic transmissions. These flexplate adapters are engineered to handle extreme duty applications and are designed to take the demands of high horsepower Gen III engines, providing added durability and reliability.

High quality

  • The 4mm thick Flex plate is constructed from cold-rolled premium steel (that's 0.035" thicker than stock), and ring gears are double welded, utilizing robotic cold-welding processes to prevent separation in high-RPM engines, it offers long-lasting strength and resilience.

Fitment:

  • For 1997-2007 GM Gen III LS1/LS6 V8 engines (up to 2009 for LS2) and 4.8/5.3/6.0 truck engines.
  • including L33, L59, LM4, LM7, LQ4, LQ9 and LR4. Adapts all of these engines to TH350, 700R-4, 200-4R, 4L60, and power glide transmissions that originally came behind a non-LS engine (such as an SBC or BBC V8).

Note

  • May not work with some 1999-2000 LQ4 6.0 LS engines, specifically ones that came with a 4L80E automatic as they require a flat flexplate due to the "tall" crank flange.

Package includes:

1pc x Trans Adapter Flexplate

  • GM LS Gen II to early GM 3/4 speed automatic
  • Forged 1-piece steel ring gear w/ 168 tooth
  • Works with stock LS starter motor

6pc x LS Flexplate Bolts

  • 12-point head design Has a 200,000 psi rating
  • M11 x 1.5

1pc x LS Crankshaft Sleeve Adapter

  • Overall Height: 1.04"
  • Inside Diameter: 1.47"
  • Diameter Small End: 1.70"
  • Diameter Big End: 2.00"
  • Material Type: Steel

1pc x Torque Converter Bolt Kit

  • Under Head Length: 1.25"
  • Thread Pitch: 7/16"-20
  • Wrench Type: 12 Point

EFFIN EARLY
2025-06-21 20:32:41
WE ALL RECEIVED THE FLEX PLATE NO HARDWARE WOW NOW I JUST HAVE 2 WAIT ON ANOTHER 1 HOPEFULLY IT LINES UP WIT MY TORQUE CONVERTER AGAIN AFTER READIN FURTHER IN REVIEWS#EARLY
tommy prescott
2025-05-05 16:40:22
Got this flywheel extremely excited to get it. I understand this is Amazon and you gamble when you order from here but 1 it did not come with the spacer like it said2 I had to drill all 6 holes for the bolts to go through. 100 percent trash
James D guy
2025-04-23 12:13:06
Fit great and looks good. The quality seems to be made with quality material. Performs how it should.
Eddie Dickenson
2025-03-04 15:46:30
Did not have any hardware with it I guess I'll just have to go to the
Devin
2025-02-06 11:42:29
Does not fit. It's just a 4l60e flex plate with a cheap $12 snout adapter. Do not buy!!!!!
Jorge
2025-01-17 11:30:08
Received flywheel but spacer and hardware was missing.
Billy Brown
2024-12-23 11:47:01
Does not allow torque converter to match up with the flex plate gotta pull everything apart and try again