i ran one of the holley versions of that autolite, was a duel line 750 mechanical secondary's with that weird one piece top, was new, came on a x block .040 340 ported x heads .520 purple hft cam, LD340 intake 18 spline 833 3:91 8 3/4 in a 72 duster that was drag raced for 18 years when i got it, ran like raped ape! ol car did great for 9 years, just adjust idle air a few times never needed to open it up for anything, 9 years,.id park it for 6 to 9 months,..go bleed front brakes dump a oz of gas down the carb fire it off, drive it 6 months to 2 years and park it again, back and forth, did every thing your not sposed to do and car always ran great till i got stupid and traded it for 55 chevy project,..my biggest regret EVER bar none!
