Quote:
Originally Posted by bdshumaker
OK, thanks.
Doing some calculations with my 28" diameter tires, I get
3.54 @ 2000rpm=47mph
3.54 @ 3000rpm=70 mph
3.54 @ 4000 rpm=94 mph
If I change to the 3.07 I get:
3.07 @ 2000 rpm=54.3 mph
3.07 @ 3000 rpm=81.4 mph
3.07 @ 4000 rpm=108.5 mph
I'm thinking I really shouldn't run the 283 at 3000 rpm to run at highway speeds of 60-70mph so I might go with the 3.07. What do you guys think?
Brian
|
3:07 could work but you would be better off leaving the rear ends alone and change the transmission to a t5 with a .76 OD ratio,
t5 with 3:54 rear ends: torque to ground 486.6 ft/lbs (460 minimum)
1500 rpm=47mph
2000 rpm=63mph
3000 rpm=95mph
Your truck would be a nice highway cruiser and get better fuel mileage with the t5. Kieth