The Toro-Flow was GMs first attempt at a light duty non Detroit diesel for the 5500 series trucks around 1965-72. It was a 478cu.in v-6 4 stroke with about a 5"bore and short 3.5"? stroke They were also used in some Uni-Harvesters The out side dimensions were similar to V-6 gas 478,351,&305E Most of the problems were in the lower end.One freight company in Madison had some that they were supposed to use to deliver around the city but when ever they had a load they couldn't scale with a B61 Mack they would hook up a lighter GMC and pound it to Milwaukee and back or untill the crank went out.Oscar Mayer had a bunch of them and repowered some other trucks with them.The Diesel Driving School at Sun Prairie got 18 of them for yard use when I was service manager there,those came from Pepsi in Chicago for $300. per truck in lots of 6 We rebuilt a lot of them If you had to regrind the crank you had to have it tuf-ride hardened again. A former GM engineer told me that the Toro-Flow was designed to have a alloy crank because of the space but they found that Tuff-ride used to make cranks wear better also strengthens it against vibration and they could use a regular crank. Without it they break I know from experiance .
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Today's Featured Article - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
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