Performance and fuel mileage need advice
#1
Performance and fuel mileage need advice
After about 9 months of working to get a 1990 cummins 6bt with a Allison 545 transmission into a 26' Champion RV. It's time to get it on the road. A VE pump 160 hp liquid to air intercooler. Would like to get 200 horse and as close to 20 mpg as possible. The motor has about 170,000 miles on it and never been tuned. Realizing this maybe a pipe dream but if you don't try you never find out. Looking to install a 3.07 rear diff to keep the RPM's down. Need to find out the sweet spot for a VE 5.9. Thanks in advance for any infro.
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