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Old 06-14-2026, 01:22 PM
dragetsen dragetsen is offline
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Join Date: Jun 2026
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Default low compression 389
I'm planning a 389 build for 87 octane. There's very little info on this. Anyone out there with experience on this? The plan right now is SD Perf. heads, 8.6:1 cr, Lunati 262/270 211/219 hrc,

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