Motive Gear Ring & Pinion GM 8.5/8.6 3.42 Ratio SR42603A-SFI Brinn flywheels only work with

Brinn flywheels only work with Brinn bellhousings

1986-1986 GMC C2500 Suburban

16 AN Male Inlet and Outlet

1972-1980 Ford F-350

* The special valvetrain in the 1970 340 T/A is not compatible with these cylinder heads

Motive Gear Ring & Pinion GM 8.5/8.6 3.42 Ratio SR42603A-SFI Brinn flywheels only work withMotive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off road, check out Motive Gear. Motive Gear products can be found in the winners circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of