Help identify these heads

cookietruck said

Theyll be fine if you can get the compression low enough. Maybe a dish piston with a step for quench. Run on 87? Maybe 9:1-ish with a wide lsa cam.

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For 87 octane, I’d run a static ratio of less than 8.3-1 just to help insure 87. The extra flow these heads have are a power winner even without the extra compression. Add a small RV/Towing cam and I can see an easy 20+ hp over stock.