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10.0 iron ok w 4.11 light car

June 17 2017 at 10:52 AM

WerbyFord  (Login werbyford)

Response to Compression ratio question

Probably getting near the edge but assuming you have some cam in there say 220-230 duration to go with the 4.11 gears, aluminum intake, blocked heat riser, forged pistons if you can, keep it below 190F when you hammer on it, and keep it clean (which means get on it a lot, and 4000 wont get it done), you should be fine.

If you're getting 10.0 with a good tight quench distance say .050" deck+gasket or less, that's even safer.

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