You didn't specify a year, but all small 55.2-60 GMC trucks use these per the 1960 GMC Master Parts Book with no reference to a specific engine. Further inspection of the MPB shows that the fitting on the carb is for 5/16" tubing, so tank to pump would be 1/4" and pump to carb would be 5/16".
Last edited by Bill Hanlon; 10/07/20223:24 AM.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12 '52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
