 Cylinder Heads -
One of the ways to make your flathead look racy is by adding finned aluminum heads. There are performance efficiency advantages too. Raising the compression ratio improves throttle response, and, other things being equal, improves gas mileage. The increased heat produced by the higher compression is somewhat offset by the thermal
conductivity of the aluminum and the greater heat rejection capability of the increased surface area. Following are some choices for different year Flathead V8s. We sell reproduction copies of the 1951 book "How to Hop Up Ford & Merc Engines " by Roger Huntington for $25. It's a gem among the few Flathead Ford build up books we recommend.  | 
