ableirish Posted July 3, 2018 Share Posted July 3, 2018 I am told that the internals are the same between the 91 E7350 all mechanical and my replacement engine, a 96 E7 300 all mechanical. As the engine is replaced I want the shop to swap the fuel system ( pump, injectors, etc.) and externals and dynatard from the broken engine to the replacement one. Will this get me back to 350 horse as originally equipped. Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/53723-91-rd688s-dump-e7350-13sp-engine-exchange/ Share on other sites More sharing options...
theakerstwo Posted July 3, 2018 Share Posted July 3, 2018 There may be a different piston between the two and also check nd see if the exhaust valves are not different and if so the dynatard can not be used with the 96 engine. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/53723-91-rd688s-dump-e7350-13sp-engine-exchange/#findComment-401791 Share on other sites More sharing options...
ableirish Posted July 4, 2018 Author Share Posted July 4, 2018 Thanks glenn.. both are later model 4 valve units.. Just want to keep or improve performance and hp for this truck.. Quote Link to comment https://www.bigmacktrucks.com/topic/53723-91-rd688s-dump-e7350-13sp-engine-exchange/#findComment-401874 Share on other sites More sharing options...
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