does anyone know what 4 speed tranny was available in the 70 GS 350 cars? (ie, both close and wide or just wide or just close, etc) Also, what the gear ratios were for the 4 speed trannies that were used in 70? Thanks~
I have never seen a 70 Buick factory 4 speed that was not a Muncie M21 close ratio which has a 2.20 first gear ratio. They were equipped 10 spline input shafts through the 70 model year. Post 70 they went to a 26 spline input shaft. In the 70 model year, a GS350 4 speed had the following rear gear ratio options: 3.23 = standard 3.42 = performance 3.64 = trailer