looking to buy a 89-93 cummins
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#2
Depends what your looking for. 89 to early 91 were non intercooled, the non intercooled ones had slightly bigger injectors and a smaller exhaust housing which allowed them to fuel faster and build boost quicker. The mid 91 to 93 were intercooled they had a smaller injectors and a larger exhaust housing. If your planning on modding the truck for power i would recommend a non IC you can get pretty good power out of them with the larger injectors just by turning up the pump, with it being non intercooled i recommend an egt gauge beacause it will run hotter than a non ic. Besides you can intercool it later. Find a intercooled cummins turbo take the turbine housing off of it and put it on the non ic exhaust housing you kind of get the best of both worlds. Stay away from autos unless you have the money to build up the trans to handle the power even at stock levels they dont last long. 12 valves are a solid engine get great fuel economy and will outlast the truck if taken care of.
#3
and btw on my first message i said get a egt gauge because it will run hotter than a non IC i meant to say if you get a non IC it will run hotter than a intercooled, and either way any time you mod a diesel you should have a way to monitor egts intercooled or not!
Last edited by oneloud59; 05-16-2015 at 03:24 PM.
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