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Given the numbers you provided, with a common 225/70-19.5 @ 31.9"......3200 rpm, (which is ideal for an FT motor) you are gonna cruise at 80 mph in OD. Probably a tad bit faster than your rig if an oldie but goodie was supposed to go down the road. Good luck, and be safe.
Given the numbers you provided, with a common 225/70-19.5 @ 31.9"......3200 rpm, (which is ideal for an FT motor) you are gonna cruise at 80 mph in OD. Probably a tad bit faster than your rig if an oldie but goodie was supposed to go down the road. Good luck, and be safe.
I don't plan on pushing the truck past 65.
Anyone have pictures of a F600 with 225/70-19.5 tires?
.61 is a pretty tall over drive
What transmission is that
My ZF6 is .72 OD, that would put you at 69 mph at 3200
When I put a 5.9 Cummins in my F-450 at 2700 it would top out at 69 mph with 4.88’s
How wide are your 19.5s? A 6” rim is spec’d for the 225/70 while a 6.75” rim is spec’d for a 245/70 at 33” even. If you have the wider rims you might be able to run 255/70s at 33.6” tall. Even if you have the 6” rims an 8R19.5” at 33.5” is a better choice than the 225/70. I’ve seen lots of early F-6s with the 5 x 8” pattern using 8R19.5s. Stu
Picked up a set of 8R19.5 wheels and tires this weekend to replace the Widowmaker wheels. A bit smaller then the 8.25-20 tires on there now.
I'll run these seeing i got a great deal and look for 22.5s in the meantime or save up to upgrade axles. New wheels
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