countryboy5487 Posted August 10, 2013 Share Posted August 10, 2013 Im looking at a 57 b61 with the 711 engine and a duplex and was wondering if i could get some of yall to throw in your two pennies about it. Is it a good engine? any common problims? anything specific to look for? Ill be honest im not real fermiliar with the older trucks (pre r model era). Its a tandem truck and im loking to convert her back into a tractor, as its got a flatbed now, and pull trailers every once in a while not often but it will get worked from time to time. And just courious if the 711 would hold up. Any input would be appreciated Quote Link to comment https://www.bigmacktrucks.com/topic/32277-input-on-the-711-engine/ Share on other sites More sharing options...
220cummins Posted August 10, 2013 Share Posted August 10, 2013 Parts are getting harder to find. They had head gasket and over heating issues in the earlier years but was corrected later on with more head studs per head. Otherwise they weren't the fastest or most powerful but they got the job done and sound good doing so. Quote Link to comment https://www.bigmacktrucks.com/topic/32277-input-on-the-711-engine/#findComment-198971 Share on other sites More sharing options...
countryboy5487 Posted August 10, 2013 Author Share Posted August 10, 2013 I had heard about them having head gasket issues. Do you how many studs were in the corrected engines (or can you tell just by looking). Im not looking to set the world on fire going down the road cause im used to 345 & 392 IH v8's and 230 & 250 non turbo cummins so lower hp numbers im used to Quote Link to comment https://www.bigmacktrucks.com/topic/32277-input-on-the-711-engine/#findComment-198974 Share on other sites More sharing options...
Superdog Posted August 10, 2013 Share Posted August 10, 2013 Are you sure it's a 711? It would be a repower if the truck is a '57,as the 711 wasn't available until '62. I've never had a 711 that was in everyday revenue earning use,but I have one '65 B-61 with a 711 that did see occasional use moving the occasional bulldozer,hauling scrap metal,and moving other trucks,and it never gave me any problems. Quote Link to comment https://www.bigmacktrucks.com/topic/32277-input-on-the-711-engine/#findComment-198975 Share on other sites More sharing options...
countryboy5487 Posted August 10, 2013 Author Share Posted August 10, 2013 They said it is a 711 but im mot sure ive not seen it in person. What engines were avail. in 56? The 711 has the 2 seperate intake manifolds? and im sorry its a 56 not sure if that makes any difference. And yes its not going to be in daily service but occasional heavy use Quote Link to comment https://www.bigmacktrucks.com/topic/32277-input-on-the-711-engine/#findComment-199001 Share on other sites More sharing options...
Superdog Posted August 10, 2013 Share Posted August 10, 2013 The END673 and ENDT673 where the only options then.Some 673's had the separate intake manifolds.It's hard to tell what alls been changed sometimes. You'll just have to check the numbers on the engine. Quote Link to comment https://www.bigmacktrucks.com/topic/32277-input-on-the-711-engine/#findComment-199007 Share on other sites More sharing options...
countryboy5487 Posted August 10, 2013 Author Share Posted August 10, 2013 Ok ill see if i can get the numbers off the engine Quote Link to comment https://www.bigmacktrucks.com/topic/32277-input-on-the-711-engine/#findComment-199008 Share on other sites More sharing options...
terry Posted August 10, 2013 Share Posted August 10, 2013 I had a 711 in a B model dump truck that i drove every day for 10 years, I would put bearings in it at 100.000 miles or so, and put one liner and piston in it that whole 10 years.The rest of the engine was never touched. At the end of the day I made more with that truck considering what the price of things were then. terry Quote Link to comment https://www.bigmacktrucks.com/topic/32277-input-on-the-711-engine/#findComment-199043 Share on other sites More sharing options...
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