[SB 86-Up 153 Tooth SFI Approved]

[SB 86-Up 153 Tooth Standard]

[BB Chevy 454 SFI Approved]

[SB Chevy 400 Standard]

[SB 86-Up 168 Tooth SFI Approved]

[SB 86-Up 168 Tooth Standard]

[BB Chevy 454 Standard]

[SB Chevy 400 SFI Approved]

Flexplates transfer engine power to the transmission, include the starter ring gear and have dual (10-3/4" and 11-1/2") converter bolt patterns unless specified. SFI flexplates meet SFI 29. 1 specifications including . 035" thicker material than stock OE plates, starter ring gears welded on both sides and a gold zinc chromate finish.