Hi All, Since I was only 5 when these were around and didn't ride in one, what's normal? I had it out on the highway for the first time at 65mph sustained for about 30 minutes. At cruise in 4th gear, about 2800 or so, my 3.36 LSD rear is audible I think. I'm hearing what sounds like a very smooth, constant "whine" coupled with the Pypes crossover and Race Pro muffler. I get it that there is no insulation other than the carpet and back seat, so road noise and mechanical noise should be expected. I just don't know what "normal" is and "problem" sounds like.... the rear is original, but I replaced the fluid, and topped off. Any comments?
'68 400HO Coupe, 4 spd, 259 interior, Windward Blue. My other car's a Johnson 15 outboard on a '61 Starcraft rowboat... Just sayin'.