Quadrajet Ultimate tuning kit for internal APT, M4M single main air bleed truck Quadrajet

This is a great tuning kit for the internal APT quadrajet and has a very nice locking plastic case to have in your tool box and take to the track. This kit is for single main air bleed Chevy truck quadrajets from 1978-1989 8 pairs of jets from 70 to 77 custom made primary rods for the APT Quadrajet. .050 at top with a full taper to the .036 tip. This full taper and adjustable APT give you the ability to tune it spot on! Power piston spring set, light, medium Power piston retainer, plastic retainer Secondary air valve cam, with spring and air valve screws. APT hole tap and plug APT adjusting tool