old1928fordguy Senior Member Jun 19, 2010 #1 Any one using a Thomas head recomend a good spark plug that runs real good for them. This head is about 8 to 1 , inserted motor,two Stromberg 81 jetted 33 for my elevation at 6000 feet. electronic ignition.Thanks Phil
Any one using a Thomas head recomend a good spark plug that runs real good for them. This head is about 8 to 1 , inserted motor,two Stromberg 81 jetted 33 for my elevation at 6000 feet. electronic ignition.Thanks Phil
D Don Conklin Junior Member Jun 19, 2010 #2 Have a Thomas head and I am using Champion J11C, any thing cooler would eventually foul in my car.
Ed Saniewski Well-known member Jun 19, 2010 #3 Hey Don, there was a car at the French Lick meet that had a Thomas Head, was that yours?