Gain W/ 410 Gears...?
06-10-2010, 02:43 PM
#21
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Sometimes a certain cam will be a little more effecient at a lil higher RPM, thus turning a few more R's helps mileage. If the cam has a lil overlap and the O2's are seeing too much unburned fuel it will lean out a little.
06-10-2010, 07:59 PM
#22
It's only like 450 rpm on a 30" tire from 3.42 to 4.11, so close enough.
http://www.race-cars.net/calculators...alculator.html
Sometimes a certain cam will be a little more effecient at a lil higher RPM, thus turning a few more R's helps mileage. If the cam has a lil overlap and the O2's are seeing too much unburned fuel it will lean out a little.
http://www.race-cars.net/calculators...alculator.html
Sometimes a certain cam will be a little more effecient at a lil higher RPM, thus turning a few more R's helps mileage. If the cam has a lil overlap and the O2's are seeing too much unburned fuel it will lean out a little.
I went from 3.42 to 4.11 and so far is the best mod I've done (cam/LT's/tune/etc), the truck pulls a lot harder off the line and my mileage in town went up.
On the highway @ 70mph I get like 16mpg so I lost around 4mpg with the gears but it's worth it IMO. Besides if I slow down to 65mph I get 19mpg so no big deal, I almost never drive in the highway anyway.
On the highway @ 70mph I get like 16mpg so I lost around 4mpg with the gears but it's worth it IMO. Besides if I slow down to 65mph I get 19mpg so no big deal, I almost never drive in the highway anyway.
But, my general take is, I don't have to beat on it as hard, to get mine to pull to same speed as before. But it pulls so nice w/. stall, I gas it anyway.
Midrange, say from 25mph-up, requires less oomph on gas pedal, so stall may actually help me a bit.
Gas MPG may've taken a minor hit if any, but that's cause I'm utilizing my stall "spirited driving" mod. Midrange pulls way-y-y-y better.
06-10-2010, 09:25 PM
#23
City driving I gained some mileage, but overall in mixed conditions I can say my mileage is the same with 4.11 than what it was with 3.42 but I have a lot more fun now
I don't know why I get 3mpg back slowing down just 5mph, it doesn't make sense as I'd expect 1mpg back, but that's what the damn computer shows.
06-10-2010, 09:38 PM
#24
I don't have a fancy DIC to tell me what my instant MPG is. I think that came out in '05, I could be wrong. Or higher than LS model. So, I have to do math. 
I wish I had that, traction control (or at least be able to turn on/off as I choose) & that signal mirror option too. Oh well.
Anyway, I consider most of my drivin as mix, or maybe CTY. I rarely take HWY (freeway), except if I take the ~50 mile to see my Mom or my sister. I almsot never go on long trips either.
FWIW, when above 45, mileage is supposed to fall off. I know EPA or gas crunchers, has the % & at what speed does this or that. From 45 to 70, they have figures somewhere.
I wish I had that, traction control (or at least be able to turn on/off as I choose) & that signal mirror option too. Oh well.
Anyway, I consider most of my drivin as mix, or maybe CTY. I rarely take HWY (freeway), except if I take the ~50 mile to see my Mom or my sister. I almsot never go on long trips either.
FWIW, when above 45, mileage is supposed to fall off. I know EPA or gas crunchers, has the % & at what speed does this or that. From 45 to 70, they have figures somewhere.
06-11-2010, 12:16 AM
#26
I don't have a fancy DIC to tell me what my instant MPG is. I think that came out in '05, I could be wrong. Or higher than LS model. So, I have to do math.
I wish I had that, traction control (or at least be able to turn on/off as I choose) & that signal mirror option too. Oh well.
I wish I had that, traction control (or at least be able to turn on/off as I choose) & that signal mirror option too. Oh well.
06-11-2010, 12:08 PM
#28
06-11-2010, 01:13 PM
#29
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I went from 3.23s to 4.10s I don't know how much I gained performance wise but it was night and day and as far as performance it use to not beable to get over 105mph but now it will lay flat on 120!!!!! But mpg stayed about the same around 17mpg on the highway but way better in town!!
06-12-2010, 08:19 PM
#30
That's terrible, u must beat the **** outta it or something, to get that back then. I thought maybe u were 4wd, but couldn't tell from pic. And nowadays guys lower 4wd too.