Best torque for main 455 caps
Hi everyone,
In Buick service manual torque for main bearing caps for 455 BBB is 115 lb ft. I send my engine to machine shop and after they done I find out that they test the clearance with lower torque number and now with 115 lb ft. crank will lock and dosen`t rotate. It is machine shops fault and I will send it to another machine shop for correct this clearance. but I saw some other rebuilders using lower torque on main bearing 90 lb ft. or lower. It is just lack of information or they use lower number torque for a reason? I must going for exact 115 lb ft or I should use lower number?