My school (Pennsylvania College of Technology) is finally getting somwhere with our drag truck project. The truck is a Mack model B-61, started life as a tandem tractor, was changed to a single axle dump at some point and is now a single axle tractor. There is a lot of work to be done, be here's some pics of the freshly modified heads and trans. The heads were cut to a depth of . 060", with a 5. 362" od and 4. 980" ID. The fire rings were machined from a solid piece of bar stock in a U shape, they are mild steel, . 116" overall height, with an . 080 U machined in them. The trans is an allison 4560 fresh from the crate.
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-Will




-Will