Valvetrain Geometry
Here's pictures of the PDFs and a picture of all the rockers I have at the shop. Top is Speedmaster aluminum with what looks to be split aluminum bushings. Next one down is stainless steel PRW with single (grooved) bronze bushing. Middle is Hughes aluminum with no bushing. Blue one is Mopar Performance (by Crane) aluminum with no bushing. Bottom is Harland Sharp aluminum with needle bearings. I do have a set of Speedmaster stainless steel but they are at NC Engine Builder's shop. If I remember correctly they look very similar to the PRW but they are not the same. I think they have the same split bushings as the red Speedmaster aluminum. I don't remember all the details but I do remember @NC Engine Builder did not like the Speedmaster stainless as much as the PRW stainless.
Here's pictures of the PDFs and a picture of all the rockers I have at the shop. Top is Speedmaster aluminum with what looks to be split aluminum bushings. Next one down is stainless steel PRW with single (grooved) bronze bushing. Middle is Hughes aluminum with no bushing. Blue one is Mopar Performance (by Crane) aluminum with no bushing. Bottom is Harland Sharp aluminum with needle bearings. I do have a set of Speedmaster stainless steel but they are at NC Engine Builder's shop. If I remember correctly they look very similar to the PRW but they are not the same. I think they have the same split bushings as the red Speedmaster aluminum. I don't remember all the details but I do remember @NC Engine Builder did not like the Speedmaster stainless as much as the PRW stainless.