I ran my numbers with the stock .045 gasket.
hdrider53,
When I ran the numbers with the SE259E (intake close 47), 76cc MCR heads,
0.045 head gaskets, 0.00 decking, and a -1.5 piston dome value, I got the following:
10.77:1 Static compression
9.59:1 Corrected Compression
201.0 CCC @ sea level
170.8 CCC @ 5280 ft
IMHO I believe that these numbers could still produce tuning problems at our altitude (5280 ft), with our unreliable gas, but especially at lower altitudes with potentially unreliable gas.
This might be a viable option: When I ran the numbers with the SE259E (intake close 47), 76cc MCR heads, 0.055 head gaskets, 0.00 decking, and a -1.5 piston dome value, I got the following:10.55:1 Static compression
9.40:1 Corrected Compression
195.8 CCC @ sea level
166.4 CCC @ 5280 ftI believe the 0.055 gaskets are available either SE or Cometic for a 3.875 bore. They may even be included in the kit you purchased.
Hopefully someone with more knowledge and experience will chime in here!Tom