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Ford 2.7 vs 3.5 vs. 5.0

DMG said:
It occurs to me that I got shockingly good mileage in my Toyota 3.0 when I worked at Yellowstone. Are you at elevation?
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I used to get 20-22 with my 04 3.4 double cab, even got 24 a couple of times. My 2019 best I ever got was 18. I'd love to get a new tundra but they still get shit mileage even with a redesign! :mad3:
 
arse_sidewards said:
Why would they improve when their buyers are rich enough to just bend over and take it?
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My first Gen tundra has got crappy mileage for 250k with no major repairs. Just maintenance. I sold my 2nd Gen at 143k but same story. Not sure why you think rich people buy toyotas. New trucks are similarly priced across all the manufacturers.
 
YotaAtieToo said:
Aren't those almost the same size? Weight might be similar also with the smaller wheels?

I always figured width was the biggest killer with small size increases, but I guess I don't know.
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About the same diameter, but around 20% more sidewall to add to the weight.
 
So my 5.0/10 speed truck has 3.31s. I am considering swapping in axles from a junkyard to get 3.73s with a rear locker. Will it matter much with the 10 speed? I will go to 285s or a bit bigger eventually.
 
DMG said:
So my 5.0/10 speed truck has 3.31s. I am considering swapping in axles from a junkyard to get 3.73s with a rear locker. Will it matter much with the 10 speed? I will go to 285s or a bit bigger eventually.
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Do you think that you could do it cheaper that way than swapping in something aftermarket like 4.30’s or 4:56’s?

Different truck I know. Good friend of mine has a new 250 with the 7.3 gasser 10 speed and 4.30’s with 35’s. Sounds perfect all the way around empty or towing.
 
JR4X said:
Do you think that you could do it cheaper that way than swapping in something aftermarket like 4.30’s or 4:56’s?

Different truck I know. Good friend of mine has a new 250 with the 7.3 gasser 10 speed and 4.30’s with 35’s. Sounds perfect all the way around empty or towing.
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I buy a lot of parts from and am friends with then so $1200ish gets me rear 3.73/locker axle and front ifs 3rd. I can sell my old stuff., presumably.

The lowest gears you can get in 10 speed, a non-raptor is 3.73 which seems strange to me. If they made a Truetrac for the 34 spline 8.8 I might leave the 3.31s in…
 
DMG said:
I buy a lot of parts from and am friends with then so $1200ish gets me rear 3.73/locker axle and front ifs 3rd. I can sell my old stuff., presumably.

The lowest gears you can get in 10 speed, a non-raptor is 3.73 which seems strange to me. If they made a Truetrac for the 34 spline 8.8 I might leave the 3.31s in…
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The axle shafts in my 12 F150 with 3.73's and an e-locker are pretty stout compared to the ones in my 01 with a V8. I have no idea the spline count on either. 31 for the 01?
 
TiTRD said:
My Ram is on 35s and still make 17gpm.

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But also have a beater Civic to keep from drowning in fuel
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Fify dodge fag
 
HillbillyDeluxe said:
How many of you recalibrate the speedometer in your truck after installing larger tires?
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I try to regear or check with gps so I can correct in my head.

Most speedos read a few mph high so going to 285s from 265s or to 35s from 33s makes it read a tiny bit low.
 
DMG said:
So my 5.0/10 speed truck has 3.31s. I am considering swapping in axles from a junkyard to get 3.73s with a rear locker. Will it matter much with the 10 speed? I will go to 285s or a bit bigger eventually.
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What exactly do you hope to gain by going from a 3.31 to 3.73 with this? Doesn't seem worth any of the work.
 

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Ummduh said:
What exactly do you hope to gain by going from a 3.31 to 3.73 with this? Doesn't seem worth any of the work.
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Open diff to factory elocker, correct for when I go from 265s to 283s.
 
YotaAtieToo said:
I was going to say the same thing, but it sounds like he's wanting the locker and may as well go lower at the same time.
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I may just buy an elocker from an axle they have, too. Blown R&P but should be a good locker.
 
Broncokyle88 said:
Any chance I can get one of you to throw a tape measure on your fan shrouds and give me the dimensions?

I have a bad idea that involves dropping a newer f150 fan setup into my 79 f250 to help solve low speed cooling problems. Or maybe the fans out of a newer explorer if the truck stuff is going to be too big
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I am on my way out of town but I will when I get back Tuesday if no one else has.
 
Broncokyle88 said:
Any chance I can get one of you to throw a tape measure on your fan shrouds and give me the dimensions?

I have a bad idea that involves dropping a newer f150 fan setup into my 79 f250 to help solve low speed cooling problems. Or maybe the fans out of a newer explorer if the truck stuff is going to be too big
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35.5" on a 3.5.
 
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