nastang87xx
Well-Known Member
You can tune for 91/93 on 12.5:1. Obvious there are OEM's doing it. But E85 is definitely preferable on such a high compression. Sleeving and forged internals (which we already have. Not powder forged or hypereutectic...no FULLY spit end forged rods and forged pistons) really doesn't have anything to do with compression but just what's available on the market. I'm sure you're not going to find any internals plus heads that'll give you 12.5:1 that are hypereutectic or cast. Hashtagbecausereasons. But technically if you wanted to have a cast piston do super high compression like that...I'm sure it could be done. Just doesn't make market sense.
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