1964-1986 GM Conversion to Disc / Disc or 4 wheel Disc Brake Proportioning Valve Applications: 1964-86 Chevelle / Elcamino / Camaro / Nova 1964-86 Buick - Skylark GS 1964-86 Oldsmobile - Cutlass / 442 1964-86 Pontiac - GTO / Lemans / Tempest / Firebird This is the Disc / Disc prop valve that came on all GM factory disc brake cars. .
