I understand what is going on, we have all been there but I would feel that I would not be helping the ford small six community if I did not point out the differences...The problem with the early logs is that the log is to small to fit a direct mount well...the late model logs are bigger with more room to fit the direct mount and the log has more volume and flows more...The chambers are also larger on the large log head about 62cc verses about 52 for the small log heads, except the late model large log 170 that is about 52cc...The best head is the last model ''hex'' head with the largest volume, it is a little harder to do the direct because it is is not as flat as the earlier large log, we call those flat tops..Star Diego used the ''Hex'' head on his direct mount and had good results.
These cars are old, it is possible that someone put a large log head on your engine or even a late model engine...Do you know for sure what head you have?
These cars are old, it is possible that someone put a large log head on your engine or even a late model engine...Do you know for sure what head you have?