Parts needed to hop-up a Cummins Big Cam

Without the CPL or engine serial number your shooting in the dark.

 

Yes they are, cummins has more parts combinations for specific engines than any other engine company.

If its the original engine for the truck, call a dealership and have them run the vin number, they can give you the engine serial number and the cpl number.

 

I thought all Cummins needed was a dime with a hole the size of a BB drilled in it and stick that in the return line.

 

No CPL needed if he's gonna change pistons and set timing anyway. High comp pistons are ok for 650 hp if you want to save money, just dont set too much advance. Holset HT 60 with 32 housing if you can find it or old skool HT4B with 26 housing. Biggest injector tips from Cummins and that's it.

 

@ Lenny, what about the fuel pump ? Bigger injector tips but No more fuel pressure, Lenny ?

 

Id start with keeping a set of head gaskets handy.....

 

And maybe a box of head bolts, and possibly a spare crank.