• Vehicle Application: GM, Pontiac
• Vehicle Years: 1964-1976
• Ring Gear: 166 Tooth, Pontiac large register bore 2.75″
• Rear Main Seal Style: 2 Piece for Engines 326, 350,389, 400, 421, 428, 455
• Flywheel Material: Forged Billet Steel
• Flywheel Balance: Internal Balanced, also called Neutral Balanced
• Flywheel Weight: 34 lbs
• Clutch Disc Size: 10.5″ and11″
• Clutch Pressure Plate Styles: Diaphragm, Borg & Beck
• SFI Safety Rated: SFICertified 1.1

You can discover more by reading our blog Choosing an Aluminum Versus Steel Flexplate or Flywheel.