About this product
This is a complete conversion kit for your JZ engine. Kit comprised of Billet Adapter plate, Billet Flex Plate to replace weak steel OEM JZ flex plate and a billet engine to transmission adapter plate.
- Billet 6061 Components
- Billet TQ Convertor Flex Plate
- Billet Motor Adapter Plate
- Complete Hardware Kit
- Pilot Spud adapter
- Hardened Steel Starter Ring Gear
- Precision Dowel Pins for Proper Alignment
Which 8HP transmissions this kit covers
Mopar car-platform 8HP50, 8HP70, 8HP75, 8HP90 and 8HP95. The older Dodge 8HP45 is not supported — it uses a different torque converter.
(The Jaguar 8HP45 is unrelated to the Dodge unit and is covered by ASE's Jaguar kit.)
Car platform, not truck
Dodge/Ram truck 8HP units use a different kit, listed separately — check which you have before ordering.
Converter centering sleeve
The billet flex plate uses an adapter sleeve that drops into the center bore to reduce it, so one kit covers both Dodge converter diameters found across second and third generation transmissions. Remove the sleeve for the larger spud and the same plate handles it.
Two threaded holes accept 8-32 socket head bolts if you want the sleeve positively retained. The sleeve sits on a machined lip that keeps it elevated off the full surface, with three relief points — so if it ever seizes after heat and load cycling, a punch or screwdriver taps it straight back out.
You will also need a TCU
This kit is the mechanical adapter only. The 8HP will not shift without a standalone transmission controller, purchased separately.
Watch the full 8HP range overview
Description supplied by Autosports engineering through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
