SCR on a 408 with 69cc chambers???
12-05-2006, 08:14 PM
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SCR on a 408 with 69cc chambers??? Hey guys can anyone tell me what the static compression ratio is on a 408 with 69cc combustion chambers, about .007 out of the hole and OEM MLS gaskets. Thanks.
12-05-2006, 08:39 PM
#2
Originally Posted by bigdsz
Hey guys can anyone tell me what the static compression ratio is on a 408 with 69cc combustion chambers, about .007 out of the hole and OEM MLS gaskets. Thanks.
Bore?
Stroke?
Ring land information?
12-05-2006, 09:44 PM
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I was just talking about flat top pistons, but specifically Weisco -8cc with the top ring down .240. On a 408 bore is 4.030, stroke 4.00. Heads are 862 castings 65cc originally, now after cncing to unshroud the valves 69cc.Thanks
12-05-2006, 10:02 PM
#5
Originally Posted by bigdsz
I was just talking about flat top pistons, but specifically Weisco -8cc with the top ring down .240. On a 408 bore is 4.030, stroke 4.00. Heads are 862 castings 65cc originally, now after cncing to unshroud the valves 69cc.Thanks
Estimating ring land volume at .66cc and head gasket volume at 10.54cc would give you 10.64:1
