Forum Discussion
blt2ski
Jul 23, 2019Moderator
In the burb, the ONLY difference between a 6.0 @ 8.1 is the motor! Possibly a 10.5" f2f rear axle vs a 9.5 SF. It's this way in early pickups.
Reality, a warranty item only trucks your looking at are out of warranty. Legal standpoint, gcwr, even the gvwr and gawr from the manufacture have no Legal meaning!
As noted, a 6.0/454/8.1 with the 4l80e/th400/4l85e derivative are pretty poor when it comes to steeper grades. Around a max of 16% at 20000 lbs. Where as the newest version, granted a bitt more torque, but the 6 so trans is way lower in gearing, so over 30% gradability. More than my 05 max by 5%!!!!
Marty
Reality, a warranty item only trucks your looking at are out of warranty. Legal standpoint, gcwr, even the gvwr and gawr from the manufacture have no Legal meaning!
As noted, a 6.0/454/8.1 with the 4l80e/th400/4l85e derivative are pretty poor when it comes to steeper grades. Around a max of 16% at 20000 lbs. Where as the newest version, granted a bitt more torque, but the 6 so trans is way lower in gearing, so over 30% gradability. More than my 05 max by 5%!!!!
Marty
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