Re: 35 Big twin – high speed problem Home › Forum › Ask A Member › 35 Big twin – high speed problem › Re: 35 Big twin – high speed problem fleetwinUS Member - 2 YearsReplies: 4737Topics: 46 August 14, 2018 at 4:30 pm #81136 I’m glad you got to the bottom of it and a head gasket will solve the problem