I have a 1983 Buick Riviera with an olds 307 5A engine in it that needs a head gasket and or new heads. I've been doing research on it but I cant find any reliable info on what the torque order/specs are for the engine. So far I've found a manual on rock auto "1983 FISHER BODY MANUAL, B-C-D-E-G-K STYLES" but didn't want to buy it until I could confirm it has the information I need. I'd appreciate any info pointing me in the right way. On a side note can anyone confirm if this method of valve adjustment works?