Hays aluminum flywheels are manufactured from certified billet material that will not break up under the stress of high RPM and severe punishment of racing. Features replaceable steel surface insert. Precision balanced to either neutral (internal) or Detroit (external) specifications. Meets SFI specification 1.1 for racing.
Specifications:
| Center Bore Diameter | 2.486 in. |
| Description_ASC | Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations |
| Description_DES | Performance Flywheel |
| Description_EXT | Performance Flywheel; Billet Aluminum; Detroit External Balance; 168 Tooth; Fits w/Large Bellhousing; |
| Description_FAB | 90 Day Limited Warranty |
| Description_FAB | Aluminum Flywheels Feature Forged Steel Ring Gears |
| Description_FAB | Available In Internal/External/Zero Balanced Versions |
| Description_FAB | CAD Designed To Provide Optimum Performance And Reliability |
| Description_FAB | Meets SFI Spec 29.1 For Racing |
| Description_FAB | Precision CNC Machined For Maximum Strength/Durability |
| Description_INV | FLYWHEEL; 70-90 BBC 168T EXT BAL; 16LB A |
| Description_MKT | Hays aluminum flywheels are manufactured from certified billet material that will not break up under the stress of high RPM and severe punishment of racing. Features replaceable steel surface insert. Precision balanced to either neutral (internal) or Detroit (external) specifications. Meets SFI specification 1.1 for racing. |
| Description_SHO | Clutch Flywheel |
| Engine Balance | External |
| Engine Make/Size | Chevy Big Block |
| Engine Make/Size | Chevy Small Block |
| finish | Aluminum |
| height | 8.1 |
| length | 7.2 |
| Material | Aluminum |
| Tooth Quantity | 168 |
| WARNING CA Proposition 65 | No |
| weight | 30.95 |
| width | 13.2 |

