Full Floater Posted April 6, 2021 Share Posted April 6, 2021 Hi. Picked up a new to me 76 R685 single axle. I thought it was a 237 but the tag says ENDT-675, 235hp and a 3B engine family. Can someone explain to me the difference in 237 and 235/ENDT-675 and 673? And what is the 3B engine family all about? Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/66473-ednt-675-235hp-3b-family/ Share on other sites More sharing options...
Freightrain Posted April 10, 2021 Share Posted April 10, 2021 Makes me wonder why all the slight differences that were available and what the application was for. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/66473-ednt-675-235hp-3b-family/#findComment-472341 Share on other sites More sharing options...
doubleclutchinweasel Posted April 10, 2021 Share Posted April 10, 2021 Maybe "B" for "brake" (Dynatard)??? Anyway, it has been a topic for discussion before. Quote "Eagles may soar, but weasels don't get sucked into jet engines." Link to comment https://www.bigmacktrucks.com/topic/66473-ednt-675-235hp-3b-family/#findComment-472345 Share on other sites More sharing options...
Freightrain Posted April 10, 2021 Share Posted April 10, 2021 Lol.....didn't even remember starting that question back when I did my motor swap. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/66473-ednt-675-235hp-3b-family/#findComment-472353 Share on other sites More sharing options...
Full Floater Posted April 12, 2021 Author Share Posted April 12, 2021 I believe the B is related to having a Dynatard, upon further research...however this one does not have the wires going to the valve covers, nor a switch on the dash... As for application, its in a single axle 1976 R685 that was left for dead. I bought it and am bringing it back to life, in hopes of giving it another round. Quote Link to comment https://www.bigmacktrucks.com/topic/66473-ednt-675-235hp-3b-family/#findComment-472436 Share on other sites More sharing options...
doubleclutchinweasel Posted April 12, 2021 Share Posted April 12, 2021 On 4/10/2021 at 3:52 PM, Freightrain said: Lol.....didn't even remember starting that question back when I did my motor swap. Funny! Quote "Eagles may soar, but weasels don't get sucked into jet engines." Link to comment https://www.bigmacktrucks.com/topic/66473-ednt-675-235hp-3b-family/#findComment-472440 Share on other sites More sharing options...
Full Floater Posted May 5, 2021 Author Share Posted May 5, 2021 If the engine is stamped B, yet doesn't have dynatard valve cover wires or a dynatard switch on the dash (I have not been under the valve covers yet to see what exactly is or isn't under there), could this possibly mean the engine has a dynatard cam, but just no dynatard stuff under the valve covers? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/66473-ednt-675-235hp-3b-family/#findComment-473393 Share on other sites More sharing options...
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