Performance upgrade options for V10
I have a 2006 Kodiak 22' B+ with the 6.8L V10. It really feels like a dog climbing mountain passes, continually downshifting and jumping RPM's to keep up. 6% grades really affect it. Are there an...
Forum Discussion
Peak horsepower of the version of the V-10 used in the E-series could be boosted by 20% if there was room for exhaust headers, and the ECM is reprogrammed to raise the torque peak to a higher RPM range. There are Banks packages to do this for the two-valve V-10 in F-series and the F-53 motorhome chassis, but the headers don't fit the E-series engine room. Somebody else may have a high-flow exhaust that fits.
This doesn't help your problem with high revs. To raise the peak horsepower, it is necessary to extend the already impressive torque curve to a higher RPM, so to get 360 HP rather than the factory 295-305, you have to get it at 4800-5200 RPM, rather than the 4500-5000 range that gives you around 300 HP now.
If you want big torque and higher power at lower RPM, you need a bigger engine, or a supercharger that effectively makes a smaller engine bigger, in terms of the amount of air pumped through. There was once a kit that used a positive-displacement (Rootes-type) blower on the V-10 to increase airflow and torque 30-40% across the whole RPM range, but this was designed for pickup truck applications and probably does not fit the space of an E-series engine compartment.
This doesn't help your problem with high revs. To raise the peak horsepower, it is necessary to extend the already impressive torque curve to a higher RPM, so to get 360 HP rather than the factory 295-305, you have to get it at 4800-5200 RPM, rather than the 4500-5000 range that gives you around 300 HP now.
If you want big torque and higher power at lower RPM, you need a bigger engine, or a supercharger that effectively makes a smaller engine bigger, in terms of the amount of air pumped through. There was once a kit that used a positive-displacement (Rootes-type) blower on the V-10 to increase airflow and torque 30-40% across the whole RPM range, but this was designed for pickup truck applications and probably does not fit the space of an E-series engine compartment.
