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are these two heads different - the vlaves look smaller but have been told the two heads are the same
reason im asking is because unleaded fuel will be limited shortly in RSA
and ive seen a efi head with 1.4 stamped on the side that has valve inserts that i may want to use
Even the early heads will run comfortably on unleaded. My run about car is a 1985 Orion Ghia I with an 81 cast head (original factory head) and has been happily running on unleaded for years.