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Rebuilding motor, and super six it
https://www.slantsix.org/forum/viewtopic.php?t=17703
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Author:  slantvaliant [ Thu May 25, 2006 8:48 am ]
Post subject: 

Quote:
3) deck the block 100 thou (these crazy 6s have a super low 8.4:1 compresson ration that needs to be brought up.)
You might want to check your particular engine before taking off that much anywhere. There is a lot of variation in chamber size, head gasket thickness, etc. Has the deck or head been machined before? A cleanup pass on the head will take up some of that, and a pass on the block a little more.

It would be easy to mill yourself into a higher octane fuel requirement, something a daily driver doesn't need.

By the way, it wasn't just sixes of the era that had low compression ratios. There are lots of four-bangers and bent-eights with similar numbers.

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