It is commonly known as a SM318 and also as an early Muncie. Anaheim Gear in Anaheim, CA has a rebuilt syncro drum assy for $125. Same basic internal parts from 55-67 cars & trucks. Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes 1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes 2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans 1947 Willys CJ2A w/F-Head engine
