Re: '75 sbc
That's a good question. I'll have to ask the builder. He runs a machine shop but stopped building motors for customers years ago and did this one as a favor because he was friends with my brother who passed. It's going into a Gentleman Jim.
Yes, I won't use anything but a roller cam anymore. This one is an Erson and took several months to get due to supply chain issues.
I'm running a mild Mike Jones hydraulic roller in my 400 sbc 72 Chevelle and the valvetrain is quiet as can be. Here's that one.
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