Updating 6 cylinder 1954 chevrolet
The 261 was available in 2 ton (5000 or 6000 series) trucks and school buses.
During it’s early years (1954-1957) it was an extra cost option above the standard 235 six cylinder.
The Chevy 235 inline 6 cylinder engine was first introduced in 1941 and was mainly used in large trucks.
In 1950, GM decided to use the 235 in several of its automobiles that were going to have the new Powerglide automatic transmission.
Between 1950 and '57, solids came with every commercial or "stick" (pass.) transmission, whether 216 or 235 or 261 engine.Its higher lift cam shaft, for better breathing, was shared only with the early 235 six cylinder Corvette.