Quote from: warwick on December 15, 2025, 05:34:14 PMBob Mannel also wrote an article specifically on 289 HiPo C4 Automatic in Fairlaner May/June 2007. It offers substantial detail. Bob is prob on this forum.
As an owner of an orig 66 hipo C4 I would say they are different-I would say shift points are above 5800 and they only stay in first if selected, otherwise they shift out of first very very fast.
Bob is a member here but hasn't posted for several years, a PM might work. He does post occasionally on the HiPo forum. If you join the Fairlane Club of America you have unlimited access to Fairlaner magazine back issues including the May/June 2007 issue mentioned above. Also, if you have the digital version of Bob's SBF book, Appendix 1(a) has details on the HiPo C4, the printed version doesn't have this.