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Vehicle Info Needed8-Bolt Crankshaft Adapter Kit For LSA & LSX454
Color:
Ships on 09/14/2026
Lowest Price Guarantee- 8-Bolt Crankshaft Adapter Kit
- For LSA & LSX454
Install Notes: - Use with LSA, LSX454 and LSX454R crate engines with 8-boltcrankshaft flange
- Includes flexplate, adapter hub and hardware
- Provides the correct converter pilot support for production 4L80/85style torque converters
- This adapter kit must be used with 809-19300175 Supermatic 4L85 trans & torque converter 809-24217235
Quality Flexplates for Automatic Transmissions
At the opposite end of the crankshaft from the balancer is the flexplate, which connects the engine to the automatic transmission through the torque converter assembly. Flexplates help transfer power from the engine to the wheels. Chevrolet Performance offers both internally and externally balanced Chevy flexplates. It is critical that you use the correct design for your specific engine application. Engines with one-piece crankshaft seals require externally balanced flexplates (except for ZZ427, ZZ572/620, ZZ572/720R and the Anniversary Edition 427).
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Note: Torque converters for TH350 and TH400 transmissions are produced with both 10.75" and 11.50" diameter converter bolt patterns. To identify the correct converter bolt pattern, measure from the converter center to an attaching bolt hole and then multiply this dimension by 2.
