View Single Post
Old 01-25-2013, 10:35 AM
PTSolutions's Avatar
PTSolutions PTSolutions is offline
LawnSite Silver Member
Join Date: Nov 2007
Location: OH
Posts: 2,263
The de-rate the engines due to longevity. A commercial truck typically see's many more and harder miles than a pickup typically would. Engine output is correlated to how long an engine lasts, so a commercial truck that would see 100K+miles easily needs to be able to last for customer expectations vs. a pickup that may see 50-80K and who's driver is more concerned with performance.

also, the more displacement an engine has the less it has to work, thats why your seeing 15Liter engines on the big trucks. A 6.0L with 400hp works much harder than an 8L with 400hp.
ProTouch Groundscapes LLC.
"Creativity Inspired By The World We Live In."
Reply With Quote
Page generated in 0.03355 seconds with 8 queries