What transmission to run in a 350 chevy small block?

Answer 1

For an automatic, Powerglide, Th350, Th400. These are the older ones. Powerglide has 2 forward gears, with about a 1.80 first gear. The Turbo Hydros have 3 forward gears, with about a 2.60 first gear. Early stick shift trans are, Saginaw 3, or 4 speeds, which were made in the 70's, and are not strong. Muncie M20, M21, and M22's, were all 4 speeds, made by Chevy in Muncie Indiana, and were used behind small, and big block Chevies. M20 is a 2.20 low gear, closer ratio, for road racing. M21 was 2.56 first gear, and wider ratio for drag racing. M22 was the same as M22, but stronger with straight cut gears, and very noisey. Then, of course, the Borg-Warner super T-10. There were three designs of this trans. All had around a 2.86 first gear. The first design had a cast iron case, and coarse exit spline. Weak. The 2nd, and 3rd designs, were aluminum, and had a fine in, and output spline. Much stronger, and more quiet than the M22. These were "outsourced" thropughout the 60's, and 70's, alternating with the Muncies. These were al the transmissions that Chevy made through the life of the 350. In 88, when the 5.7 debuts, there were another whole line. Most had a four speed with overdrive, however, none had achieverd the strength of the 70's models.