607t1173 Posted February 11, 2013 Share Posted February 11, 2013 I have seen several posts that mention 711T's, over the years I've seen many 673T's and even owned quite a few.My question is did any trucks leave the factory with 711T's ?I have owned several with naturally aspirated 711's and only two an F and an R with 711T's, On closer inspectionI found that the turbo's on both 711T's had the same part #'s as the turbo that Mack used on the 673T's and when I had one of the 711T's apart it had the same pistons as the naturally aspirated 711.Someone posted here that they were early C motors, which I know to be wrong, so maybe someone can enlighten me Quote Link to comment https://www.bigmacktrucks.com/topic/29894-endt-711/ Share on other sites More sharing options...
Mike Posted February 11, 2013 Share Posted February 11, 2013 Not sure but Tom could help at the Mack Museum. They get these questions often.mike Quote Link to comment https://www.bigmacktrucks.com/topic/29894-endt-711/#findComment-163537 Share on other sites More sharing options...
Maddog13407 Posted February 11, 2013 Share Posted February 11, 2013 to my knowledge no 711's left the factory with turbos and its pretty inpossible for a 711 and 673 to have the same pistons.... the 673 had a 4 7/8 's bore and the 711 and 237 had a 5'' i believe Quote Link to comment https://www.bigmacktrucks.com/topic/29894-endt-711/#findComment-163546 Share on other sites More sharing options...
HK Trucking Posted February 11, 2013 Share Posted February 11, 2013 The ENDT 675 237 Maxidyne was a 672 cu in engine with a 4 7/8 bore, same as the 673. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/29894-endt-711/#findComment-163552 Share on other sites More sharing options...
607t1173 Posted February 11, 2013 Author Share Posted February 11, 2013 i didn't claim that they had the same pistons just the same turbo's Quote Link to comment https://www.bigmacktrucks.com/topic/29894-endt-711/#findComment-163554 Share on other sites More sharing options...
Maddog13407 Posted February 11, 2013 Share Posted February 11, 2013 yea, read that wrong and wrote it wrong as well haha, sorry guys. the 711 had 5'' bores and the 673 and 673 had 4 7/8 i believe and no 711's were turbo from the factory although there seem to be alot more showin up lately so Mack must have retorfitted quite a few of them. Quote Link to comment https://www.bigmacktrucks.com/topic/29894-endt-711/#findComment-163559 Share on other sites More sharing options...
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