COMP Cams Rocker Shaft Set Chrysler SB .

Made from a high quality aluminum alloy with a tensile strength of 80,000 psi‚ Needle bearing trunnions allow valve spring pressures of up to 350 lbs. open pressure, making Aluminum Roller Rocker Arms a good choice for many street applications. Don't cut up your new rocker arms to clear a wider diameter valve spring. Instead, use these .100" offset shafts to shift your Chrysler 273-360 rocker arms inboard to pick up clearance on 1.550" and larger valve springs.