1952 53 Canadian GMC and Chevrolet maintenance manuel supplement. Section 6 page 2 Quote " Series 1300-9300 through 1500-9500 trucks use only the new "235" engine during 1953.Use of the "216" engine has been discontinued in Canadian Truck Production. Features of the new engine are as follows: 1. Strengthened crankcase. 2. Stiffened crankshaft and increased counter weighting. 3.Compression ratio increased to 7.1 4.Precision insert type connecting rod bearings. 5. Full pressure feed lubrication. 6. Aluminum alloy pistons. Etc.....". If any one would like me to send them a scan of the rest, PM me your email.
