Outbehindthebarn Posted September 4, 2013 Share Posted September 4, 2013 Ok, two questions. What is the difference between a b61 and a b63?Second. I see that some of the tip turbine after-coolers have coolant inlets and others do not. Is this a horsepower thing or a date of production thing?Did Mack ever produce a 350 horsepower tip turbine two valve engine? Sorry three questions. Quote Fun is what they fine you for!My name is Bob Buckman sir,. . . and I hate truckers. Link to comment Share on other sites More sharing options...
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