ONE NEW VACUUM ADVANCE FOR YOUR INLINE 6 CYL CHEVROLET CAR OR TRUCK, HAS THREADED PORT FOR THE VACUUM HARD LINE,

 FITS THE FOLLOWING APPLICATIONS......

1947 THRU 1962 CHEVROLET/GMC TRUCK  (216-235 CU. IN.)

1939 THRU 1952 CHEVROLET CAR (216-235 CU.IN.)