Wyeoak Posted March 24, 2022 Share Posted March 24, 2022 Long story short my E7 cylinder heads are cracked and I was wondering if the E7 tech cylinder heads would work. I did noticed that the injectors are different but can they be interchanged? Quote Link to comment https://www.bigmacktrucks.com/topic/69426-difference-between-cylinder-headers-of-e7-mechanical-vs-the-etech/ Share on other sites More sharing options...
880joe Posted March 24, 2022 Share Posted March 24, 2022 I don't think they are interchangeable because of the pushrod tube angles 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69426-difference-between-cylinder-headers-of-e7-mechanical-vs-the-etech/#findComment-493155 Share on other sites More sharing options...
Mackpro Posted March 24, 2022 Share Posted March 24, 2022 They will actually bolt on but as Joe said it’s all good till you try to put the push tubes on . I’ve tried it . Quote Link to comment https://www.bigmacktrucks.com/topic/69426-difference-between-cylinder-headers-of-e7-mechanical-vs-the-etech/#findComment-493158 Share on other sites More sharing options...
Vmac3 Posted March 24, 2022 Share Posted March 24, 2022 See it happen as well. Push rods will give you a problem. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69426-difference-between-cylinder-headers-of-e7-mechanical-vs-the-etech/#findComment-493165 Share on other sites More sharing options...
fjh Posted March 24, 2022 Share Posted March 24, 2022 I have zero experience swapping these that said! I do know how Mack made lots of subtle changes to things over the years it was a continus process althou physically this engine has evolved with the same look since even the gas block It even looked similar Lots of changes some big some small! so what is being said here by the boys you need to follow their lead 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69426-difference-between-cylinder-headers-of-e7-mechanical-vs-the-etech/#findComment-493188 Share on other sites More sharing options...
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