Performer RPM Magnum heads?

Ted265 said

PRW rockers allow pushrod oiling. The speedmaster rockers look to be a copy of the PRWs (or more likely made in the same factory as a more budget friendly line)

Click to expand...

The PRW is a copy of the Comp Ultra Pro Magnum rockers. Same with Speedmaster, Mancini, and anyone else selling that same style stainless body with roller tip. I have a set of Comp and a set of Speedmaster, both in 1.5 ratio, and everything I can measure is exactly the same. I never had the PRW stuff yet.

Editing to add;
I measured the Comp and the Speedmaster to see what each one would take from B3 Racing for a correction kit on Edelbrock LA heads and found all of those measurements were the same, within one or two thousandths.

Anyone that says Speedmaster or PRW, or whomever needs correction to clear the spring and retainer should know the Comp version needs the correction as well.