GM LS Conversion Flexplate With Crank Adapter will fit Power Glide, TH350 & T400

Engineered for serious LS-to-automatic swaps, the GM LS Conversion Flexplate With Crank Adapter delivers a robust, ready-to-run solution for connecting GM LS engines to a range of traditional automatics. Designed for LS1/LS2/LS3 family motors (4.8, 5.3, 5.7 LS1, 6.0, 6.2), it is compatible with Powerglide, TH350, and TH400 transmissions, as well as 4L80E, 2004R, 700R4, 4L60, and 4L60E units. This flexplate combines precision engineering with durability to handle today’s power and RPM peaks.

• 168-tooth, internally balanced for smooth, reliable engine-to-transmission coupling
• Outside diameter is 14" (355mm)
• Two converter bolt patterns included: 10.75" and 11.06"
• Includes crank adapter for straightforward LS conversion setups
• Pilot spacer included (also sold separately AF72-5053)
• Construction: Aeroflow flexplates are made from extra-thick material and are double welded & anodised for extra durability

Why choose this flexplate? It’s built to withstand extreme power and RPM, making it a dependable choice for street, race, and heavy-duty applications where LS swaps demand a strong, precisely balanced flexplate with versatile converter patterns. A ready-to-install solution that simplifies LS conversions to a wide array of GM automatic transmissions.