i run av gas all the time the 451 loves it and you can ru more timing try 34 total all in at 3000 i put 5 to 7 gallon then top off with boat fuel so you come around 95 oct,
i get mine at a wawa the pump is marked as AV LL 100 the ll stands for low lead so 906 stock heads will live with out lead additive just to let everyone know.
i run av gas all the time the 451 loves it and you can ru more timing try 34 total all in at 3000 i put 5 to 7 gallon then top off with boat fuel so you come around 95 oct,
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