CMB HR

[Big roy]

Hi Guys

I am thinking of picking up on one of the CMB HR engines for my roadrunner and moving the gold head to my sport 40 in place of my OPS .45, will I see big differences or small differences between the engines? I do not know the differences other than I beleive the sqautier HR may not fit in my current configurations of my drivelines, any help from the gurus here

Roy

 

[Tom Foley]

You'll most likely never need a new rod thats for sure ! The CMB bottom end is pretty bulletproof from my experiences .

 

[John Knight]

The HR engine is a hydro engine and has a longer but sleeker profile than the RS/EVO engines, which are shorter and wider. The gold head engines (CAM) were also hydro styled engines and are about the same in size. The earlier grand prix (GP) gold head engines were EVO type (2 piece crank) and wider than the gold or purple CAM engines. The new HR should be fairly close in size to the gold head CAM.