Engine ratio

rich777

Member
I'm trying to find out what ratio my engine is we can't find it written near dipstick or bellhousing
Its 1972 car v8 engine no 45104201
Reason for finding out is what head gasket to use.
Help appreciated
Rich
 
All the 3.5 head gaskets are the same, unless you go for composite, so engine number or CR makes no difference.
 
Yes Harvey was just wondering whether to go for composite as they say use it if 10.5 ratio its better to lower the compression a little .
 
Using composite gaskets and not skimming the head to compensate will lower a 10.5:1 cr down to about 9.9:1
 
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