dmlinton Posted June 8, 2014 Share Posted June 8, 2014 (edited) Came across a 220 Cummins with turbo and Jake reportedly "out of a B model". What B models would that engine have been used in? Would it be suitable to swap into my B-30? Any challenges connecting my 5-speed transmission to it? I presume this engine might produce a lower top speed than the original EN331?Thoughts? Edited June 8, 2014 by dmlinton Quote Best regards, Dennis Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/ Share on other sites More sharing options...
theakerstwo Posted June 8, 2014 Share Posted June 8, 2014 It would have been a B73 with a long hood. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/#findComment-248439 Share on other sites More sharing options...
j hancock Posted June 8, 2014 Share Posted June 8, 2014 It is going to be a little long to fit under the hood of a B-30. Cummins were in B-73/77 which had a longer hood and fender extension panels. Also, Cummins were in a B-71 which had an extended nose to make everything fit.Not an easy swap for what you have. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/#findComment-248440 Share on other sites More sharing options...
Joe Ditchkus Posted June 8, 2014 Share Posted June 8, 2014 The 743 Cummins was used in B-71,73,77,8385 and 87.It would be a lot of work and engine would be too heavy for front axle. Your B-30 trans too light duty. Just for starters. Joe D. Quote Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/#findComment-248441 Share on other sites More sharing options...
dmlinton Posted June 8, 2014 Author Share Posted June 8, 2014 Thanks guys. It was a long shot. Afraid I know little about Mack engines. Anyway, still leaning heavily toward keeping my B-30 original. 1 Quote Best regards, Dennis Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/#findComment-248443 Share on other sites More sharing options...
Maddog13407 Posted June 8, 2014 Share Posted June 8, 2014 yup, what they said. too long for starters, produces too much torque for the little transmission and is too heavy for the tiny front axle and springs. Quote Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/#findComment-248451 Share on other sites More sharing options...
Phase 1 Posted June 8, 2014 Share Posted June 8, 2014 Anyway, still leaning heavily toward keeping my B-30 original.Keep leaning I say. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/#findComment-248460 Share on other sites More sharing options...
b61mack Posted June 8, 2014 Share Posted June 8, 2014 If you want a diesel use a 675 witch is a 237hp with a 5 speed. the 5 speed that comes behind the maxidynes are a lot heavier than your 5 speed. you can find 237s anywhere, more power than a 220-250 cummins even thou it only has 672 cubic inch. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/#findComment-248464 Share on other sites More sharing options...
Joe Ditchkus Posted June 8, 2014 Share Posted June 8, 2014 If you are intent on a diesel try a 5.9 Cummins very popular conversion. A 3-53.4-53 or 4-71 Detroit would fit but still is heavier than your gaspot Mack. They are avaible and not very expensive.Perkins 6-354 (not sure on model #)is a decent engine.There are others but these come to mind quickly.Joe D. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35994-220-cummins-suitable-for-b-30/#findComment-248489 Share on other sites More sharing options...
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