How could I have forgotten!!! I wrote - "The best example of a motor originally designed for "work" turned racer was a fire truck water pumper made into a successful Formula One engine in the 1960's." The basis for my V8 265 was a 1963 Oldsmobile 215 all aluminum F85 motor. Jack Brabham had Repco design a pair of single OHC heads (originally with the exhaust in the V) to power his F1 cars to Championships in the new 3 liter formula in 1966 (Brabham) and '67 (Denny Hulme). I saw one race at a Vintage meet at Watkins Glen and had to get on my hands and knees to see the block--but there it was--identical to the one in my Volvo. -- Dave