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Read that Racing Head Service (RHS) was founded in 1967 as a manufacturer of racing cylinder heads and quickly established itself in drag racing and circle track circuits. A member of the COMP Performance Group, Racing Head Service (RHS) combines its cutting-edge airflow technology with valvetrain knowledge from COMP Cams engineers to create some of the high-flowing, best-performing cylinder heads on the market.
I have the RHS LS3 heads, but I haven't finished the engine yet. I bought them bare and used Manley valves and a BTR spring kit.
They look nice.
I cleaned up a little around the guides, but just to clean it up a little.
The spring locators/guides are an odd size, I believe the same as Dart aftermarket heads. I bought the ones for bronze valve guides first, and they were too large.
I put the RHS LS3 heads up next to my Dart Pro1 LS3 heads just to show a comparison between the two, in case someone else comes across this post looking for information. Both are the as cast models. Keep in mind, the RHS head is 260cc intake runner and about $500 bare and the Dart is 280cc intake runner and about $900 bare.
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