If hardened valves and valve seats were fitted in the rebuild, you wouldn't need to use an additive, but it's probably unlikely that they were, so it would be best that you do use one. Adding it won't ...

We’ve seen a Chrysler Hemi, a Ford Flathead and a Volkswagen flat-four go under the wrench. Now, the folks at Hagerty have filmed the rebuild of a small-block Ford ...

Engine-block castings do not have to be absolutely identical to each other, because precise areas will be machined to perfection after the casting is complete. A good casting is one that allows for ...