1953-1962 Corvette Exhaust Manifold Casting Numbers

1953-1955

Left Right Engine
3836108   Six-Cylinder

1955

Left Right Engine
3704791 3704792 1st Design V-8
3837069 3836968 2nd Design V-8

1956

Left Right Engine
3725563 3725563 1st Design, All Engines
3731557 3731558 2nd Design, All Engines

1957

Left Right Engine
3733975 3733976 All Engines

1958-61

Left Right Engine
3749965 3750556 All Engines

1962

Left Right Engine
3749965 3750556 250 Horsepower
3797901 3797902 300, 340 & 360 Horsepower