The 235 was offered as an option in '51. I don't remember what trucks, but I'm thinking it was 1-1/2 ton and up. The first full pressure 235's came in '53 PowerGlide equipped cars, and in all applications in '54.


-Tim
'51 Chevy 3104 w/'56 235, 848 Head, HEI Dizzy, Corvette Cam, Split Manifold and Dual Carter YF's