hey guys I did a little searching on here couldnt really find the answer for my engine. Just wanna know what the highway rpm sweet spot and speed is for a truck like mine. 03 1500 QC 2wd?

 

by sweet spot do you mean, the best speed to save gas? if i wanna save gas i cruise 71mph, but doesnt make that big of a difference

 

well ive seen guys talking about with the hemi that if thier rpms are way up around 2200 thats where they get thier best mileage. So i was just wondering if thier is a certain speed or rpm range that the 4.7L performs better at.

 

depends on your gearing. I have 4.56's and mine is 60mph at 2000rpm

 

Sorry Forgot to mention that. I have 3.55 gearing and 33/12.5 MT's. And not sure if its stock but I also have overdrive. So at 120 km/h (75 mph) My rpms are about 2000 whereas at 100 km/h (60 mph) my rpms are about 1600-1700. I dont have the onboard computer or anything and I do the calculations by hand, It just seems everytime I go for a long drive different speeds work better.

 

ughhh if i only had $1000 to randomly spend, i would love to gear to 4.56....

 

ok ill post something that helps then before my gear swap I got my best mileage around 70mph. And wouldnt we all like to have 1000 to flush away?

 

Time to take a loan out maybe?? lol All just for my truck

 

Id take a loan out on my next project car......