HELP Magnesium DRE Warren Johnson valve overs

divco13

New member
Dec 14, 2022
4
1
3
New Smyrna Beach Fl
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I have a set on my BBC ZZ502., with adapter spacers, I machined. What is the model year that corresponds, to their bolt pattern.... The current gaskets are 30+ years old. Need get replacements before removal. I worked for Cars & Concepts, at the time they owned Hurst Corp In fact watched Mike who was the clay molder hand formed the master clay design.


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Olds 307 and 403

Well-known member
Oct 4, 2018
909
263
63
Melville, Saskatchewan
I believe they are unique a DRCE pattern. Not quite Olds, not exactly BBC. Welcome.