5.2 magnum GT35 to S475

TT5.9mag said

Lots if you give it all the octane. And it doesn’t detonate. The magnums I’ve torn down have all been 5.9s and they always have big ring gaps from the factory. I’ve personally measured from .024 to .030 on top rings. Never torn down a 5.2 though.

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Being on e85 definitely helps. Plus I pull an additional 3deg at MBT to cushion things some. That’s apparently how all the big power sbe LS Stuff lives so that’s what I’ve implemented as well.ive actually got a spare motor torn down currently. I may have to pull some rings off and see what they measure at.