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going with a ht3b turbo is putting alot of boost in a 250. i ran ht4b on my small can built to industrial 420 spec,s for 25 yrs. untill i switched to a kt fuel pump i had 0 problems but with the kt pump i did burn it down several times. piston oilers arnt inside the engine they install from the...

YES for getting engine life you need piston oil coolers with a turbo however if your just gonna drive the truck around and not work it it will probably be ok. it takes a load on the engine to build boost. i,am also concernned about the really small oil cooler. its the smallest cooler i,ve ever...

did some research on this version of the 855 engine. its definatly vehicle specific. it has a really small oil cooler, all from accessories are specific to this application, DEFINATLY NO PISTON OIL COOLERS and no provision for them. I,d be real leary in doing very much hop up to this engine and...

nope, there in the side of the block on passenger side. same with all big and small cam 855 cu.in. cummins engines.

IF there isnt provisions for oilers rather machineing the block it would be alot better to just get a block or a whole engine and swap it out. also i,ve found going with lower press fit liners is a huge plus and it totally eliminates head gasket seepage. is there anyway someone can post a...

Is there provisions in the side of the block on the passenger side for piston oil coolers ? If there is its easy to install them, you dont even have to pull the pan. 300 BC3 SPEC,S WOULD BE NICE IN ONE OF THESE 5 TONS.

Guys i run small and big cam cummins engines for 22 yrs over the road. The best turbo for these if you want brute pulling power is 1 of these 2 turbos cummins part numbers 3801919 or 3801918 and for you small can guys the best cpl for them is industrial 420 hp or magnum 400 hp the...