Here, the most common (and often most expensive) alignment dowels are solid, precision-ground “parallel” pins manufactured per ISO 8734. These deliver high positional tolerance, though require ...

Factory dowel pins are solid, like this. If you have removed them for any reason, the index will change, so if you are only off .001-.002-inch, you can remove and reinstall them, sometimes that ...

Offset dowel pins are generally available in 0.007-, 0.014-, and 0.021-inch sizes from Modern Driveline.

The "guinea pig" engine is an externally-balanced 454, whose crank had a factory-installed dowel pin to ensure correct alignment with the externally-weighted flywheel. A slight cut was made to the ...

Pontiac used a pair of 0.625-inch-diameter dowel pins to locate the bellhousing’s position on the block. Browell Bellhousing developed a tool that makes the task much simpler.

Once locked in place, the bushing will not migrate which keeps the bellhousing exactly aligned. Older offset bushings either float in the block dowel pin hole, which requires a locking screw to be ...

Lakewood offers offset dowels in three sizes, .007, 0.014, and 0.021 inch. These can cure misalignments up to 0.052 inch; anything more and you'll need to have custom dowels made.