You will not have a problem running a domed piston with that head. The term low compression is used to described a head that is designed to burn kero or distilate fuels. You can mill the head down to increase compression but you will need to take it down quite a bit to get even get close to a stock high compression head. The diffrenence in compression is, the low compression will have around 90 psi while the high compression gas will have around 130psi. As D said check your tag for a suffix it could have been ordered like that from factory. If your not planning on pulling or heavy tillage then that head will be fine. What are you planning on doing with that Super M?
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Today's Featured Article - The Rescue of a Fordson F - by Anthony West. Introduction I live in the UK and have for many years restored Fordson tractors (in the main model N's). I have also restored and shown model F's, E 27N's, Field Marshall Series 2, David Brown Cropmasters and the old rey Fergeson T 20. At one time I had seven restored examples which were shown and used in ploughing matches. As most restorers, I have a number of war stories I can relate on a range of topics that may help other like minded and interested people. Perhaps my first p
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