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Bob Bidonde · 04-11-2021, 08:55 AM

I want to hear from those who are running 6:1 and 7:1 compression heads on Model "A" and Model "B" engines with babbitt bearings, and stock oiling systems.
Can 6:1 and 7:1 compression ratio heads be run reliably for cars that do a lot of touring? If any, what issues have you experienced?

04-11-2021, 08:55 AM	#1
Bob Bidonde Senior Member Join Date: May 2010 Location: Long Island, NY Posts: 3,463	Highest Reliable Compression Ratio I want to hear from those who are running 6:1 and 7:1 compression heads on Model "A" and Model "B" engines with babbitt bearings, and stock oiling systems. Can 6:1 and 7:1 compression ratio heads be run reliably for cars that do a lot of touring? If any, what issues have you experienced? __________________ Bob Bidonde