The increased noise at 70 or so seems to be a combination of road, engine & wind. I noticed the wife holding her hand up to the window & door jams as if she her checking for sources of some noise while we were on the interstate Also, even though I have a 3:08 rear & 28.8”tall tires, truck still has a 4th direct transmission. That puts engine speed up around 25/2600 rpm’s at 70ish. Overall, though, the overall comfort zone for the truck seems to be in sub-70 mph speeds. The 454 has massive torque, it could easily use a 5th OD transmission. But , so far, I’m happy with my $600 m20 4spd with Hurst shifter. As for posting in the using the truck as a truck, the only thing we’ve hauled so far are ourselves . I have posted a little bit in the Southern Bolters thread. Thanks for checking in and the suggestion
Last edited by RLB; 03/27/202511:57 AM. Reason: Punctuation
1966 C-10 Short Stepside HiPo Step-by-step ~ and on-going resto build in the Project Journals