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burnin oil · 11-21-2014, 08:25 AM

Stock you are looking at 400ftlbs of torque and low revs. Not a good recipe for power pulling a hill. At the bare min get the fuel pin and gov springs. These parts are pretty cheap and will do wonders to wake the motor up. Dieselwrenchers suggestion on getting a newer turbo is a good one. Most first gen motors had good size exhaust housings that are slow to spool up. I think they were all 16 or 21cm housings where the 2nd gens HX35 had a 12cm housing. Another good swap turbo is the early 3rd gen turbo from a 600 series CTD. That one will take a little more work to install but I do prefer it to a HX35. Keep an eye out and you can get a HX35 used pretty cheap. A rebuild kit is around $100 last time I checked. Most people say that they need balanced but I know of several people, including myself, who have replaced the bearings and ran it.

11-21-2014, 08:25 AM	#28
burnin oil Registered User Join Date: Jan 2013 Location: Eastern TN Posts: 1,921	Re: K30 Downgrade to Cummins Project Stock you are looking at 400ftlbs of torque and low revs. Not a good recipe for power pulling a hill. At the bare min get the fuel pin and gov springs. These parts are pretty cheap and will do wonders to wake the motor up. Dieselwrenchers suggestion on getting a newer turbo is a good one. Most first gen motors had good size exhaust housings that are slow to spool up. I think they were all 16 or 21cm housings where the 2nd gens HX35 had a 12cm housing. Another good swap turbo is the early 3rd gen turbo from a 600 series CTD. That one will take a little more work to install but I do prefer it to a HX35. Keep an eye out and you can get a HX35 used pretty cheap. A rebuild kit is around $100 last time I checked. Most people say that they need balanced but I know of several people, including myself, who have replaced the bearings and ran it.