Jpri Posted January 21, 2021 Share Posted January 21, 2021 This is my engine number Etazb 673a, my question is, is this considered a e6 motor? I just bought this dump truck and need to know what it is so I can order parts for it. When I look up Mack engines there called e6 or e7 ect.. but I don’t see anything that links my number to any of these motors. Also I know what most of the letters mean but what does the b stand for? Thanks for any help and if anyone knows a good spot to buy parts that would be great too. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2021 Share Posted January 22, 2021 The E-7 was born in 1990... You have an E-6... what year? Quote Link to comment Share on other sites More sharing options...
Jpri Posted January 22, 2021 Author Share Posted January 22, 2021 It’s a 1979 Quote Link to comment Share on other sites More sharing options...
Jpri Posted January 22, 2021 Author Share Posted January 22, 2021 So are all motors before the e7 a e6 even though the change of hp? Mine is a 315hp if it matters. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2021 Share Posted January 22, 2021 basically ,,, yes.... But I have limited knowledge on different E-6's... I'm currently building an E-6 2valve. 1960'ish... So I am learning as well... Someone here will hook you up better, however, you have a great engine, they just run and run and run... jojo 1 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2021 Share Posted January 22, 2021 E-6 is 672 Cubic inches, The E-7 is 728 Cubic inches... Quote Link to comment Share on other sites More sharing options...
Farmnaked Posted January 28, 2021 Share Posted January 28, 2021 I went through the same thing a few months ago. I have a 1979 R model dump truck. It has an ETZ673c in it. Not much info out there about this engine. I know this doesn’t really help you any but thought I would share it. Quote Link to comment Share on other sites More sharing options...
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