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It's need to have lower C.R. pistons, head with stronger valves spring, turbo/intake, bigger air cleaner, injection pump being re-calibrate, intercooler & piping for 300HP. Unless you got acces to a salvage yard for parts at dead cheap price, you better off buy a rebuilt 300 or re-power with a later model, EX: duramax LBZ or LLY 360HP/650lbs torque. Then with that power you will need to upgrade the rear end to have a vehicule balanced.
good luck wrench |