Quote:
Originally Posted by Tom Vaught
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That's because a truck company IH, designed the 7.3, a car company designed the 6.7, ford
None of the best performing light/medium class 1-5 diesels were designed by car companies. Cummins, IH, and GM/Isuzu. At least GM had their hand in Detroit Diesel, before it was sold to Penske, then to Daimler. I do believe that Isuzu had more of the responsibility for designing the Duramax than GM did.
When a car company designs a light/medium duty diesel you end up with a jewel like the 5.7 and 4.3 V8, and V6, Oldsmobile derived diesels. I actually owned a 5.7 in an 81 Bonneville, and was working at a buick dealer in the early/mid 80s, just a peach of an engine, with little of diesel traits, like high torque, except they did get good fuel mileage, best on the highway was 31 MPG...………………...LOL
I actually ran mine up to 150,000 miles and sold the running engine. Then did a gas conversion to a 350 olds and sold the car. Much easier to sell at the time with a gas engine in it. I did a few changeovers in the 80s from diesel to gas.
