Compression ratio for a 406 sbc
03-08-2007, 11:11 PM
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Compression ratio for a 406 sbc
thinking about buildin a 406 for my race car and keep my 355 for a back up..
the heads ive gotten are a set of 50cc heads and i was just wondering what the compression ratio would be with flat top pistons.. on a 64cc head it would be a 11.8 CR
the heads ive gotten are a set of 50cc heads and i was just wondering what the compression ratio would be with flat top pistons.. on a 64cc head it would be a 11.8 CR
03-09-2007, 10:03 AM
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try this out
1cc per .006 milled
or
1.667 cc for every .010 mill
and from a 72cc head to a 64.5 cc head its about a full point in CR
which is about 8 difference
your going 14 difference, that should take you to about 13.8
1cc per .006 milled
or
1.667 cc for every .010 mill
and from a 72cc head to a 64.5 cc head its about a full point in CR
which is about 8 difference
your going 14 difference, that should take you to about 13.8
03-09-2007, 10:57 AM
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Originally Posted by Quik
try this out
1cc per .006 milled
or
1.667 cc for every .010 mill
and from a 72cc head to a 64.5 cc head its about a full point in CR
which is about 8 difference
your going 14 difference, that should take you to about 13.8
1cc per .006 milled
or
1.667 cc for every .010 mill
and from a 72cc head to a 64.5 cc head its about a full point in CR
which is about 8 difference
your going 14 difference, that should take you to about 13.8
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