I've seen tach's show slow on rpms, or be double, but never just a 'hair' fast. Not saying it's not possible, just haven't seen it. (If anyone has, speak up).
shall i scare u now???? i have had my rig with the big tires on it, up to 105mph. the needle was pointing a little past straight down. had a buddy follow me to see how fast it actually was. mine was surprisingly stable at that speed. havent done it since though. lol
took you 12 miles to get that last 10 mph? lol also your not up to temp yet mister.....
Was that in its current shortened state?
That's definitely getting up there. I know 85 in the Moose Truck feels like your about to break the sound barrier, and you really start thinking about the weight of that rubber whizzing around in your wheel wells. I wonder how many pounds a 1 foot square cross section of 36" X 12.5 tire weighs rotating at 66 RPM?
To attach on the subject, my truck has 265/75R16, 3.55 rear end, and ZF5 box. my tach registers 2200 @ 65, approx. 2050 @ 60. What is the OD ratio, and is the speed/rpm reading accurate? Sorry for piggybacking the subject, instead of answering the current issue, I'll take the cane flogging shortly