Float level is measured from the machined surface with gasket removed.
| APPLICATION | CARB NUMBER | FLOAT LEVEL | MAIN JET |
| 1925-27 CHEVROLET | 4S | 9/16″ | |
| 1927 CHEVROLET | 85S | 9/16″ | DRILL SIZE 69 |
| 1927 CHEVROLET | 111S | 9/16″ | DRILL SIZE 69 |
| 1928 CHEVROLET | 102S | 31/64″ | DRILL SIZE 69 |
| 1929 CHEVROLET | 125S | 3/4″ | DRILL SIZE 57 |
| 1929 CHEVROLET | 136S | 3/4″ | DRILL SIZE 57 |
| 1930-31 CHEVROLET | 150S | 3/4″ | DRILL SIZE 56 |
| 1928-29 CHRYSLER | 126S | 5/8″ | DRILL SIZE 71 |
| 1929 PLYMOUTH | 130S | 11/16″ | DRILL SIZE 70 |
| 1929-30 PLYMOUTH | 130SA | 11/16″ | DRILL SIZE 70 |
| 1929 INTERNATIONAL | 136S | 3/4″ | DRILL SIZE 57 |
| 1930-31 UNIVERSAL CARB | 150S | 3/4″ | DRILL SIZE 56 |
| 1930-31 PLYMOUTH U30 | 156S | 11/16″ | DRILL SIZE 56 |
| 1930 DESOTO 6 CK | 159S | 11/16″ | DRILL SIZE 55 |
| 1931 DESOTO 6 SA | 188S, 200S | 11/16″ | DRILL SIZE 53 |
| 1931 PLYMOUTH | 209S | 11/16″ | .0485 |