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