(1963 chevyII, front sump pan) So, I decide to install a steel shaft collar in place of the plastic one. everything goes together fine, got the pump bolt snugged into place with the pump flush to the block. dowells are where they should be. time to torque it. I check the manual, and it reads 65 ft lbs. well, before the wrench clicks, the pump housing split around the bolt hole. 1) The manual is for 70's camaros, haynes. Is the spec different for the chevy II? 2) could the spec be altogether wrong? 3) should I get a new torque wrench?. Ordered a new pump, should be here by wednesday.