b34tgnu2

I'm gonna try to find one to test drive before I actually do anything.

aliass24

I like my 4.10's,gas mpg might take a little hit but with my mpt tune the truck hauls. I ordered the truck with those gears knowing Im gonna upgrade to 35's in the future. Also I gained about 1 to 1.5 mpg with the tune.

b34tgnu2

I can't tell what I have gained with my tune even on hwy trips the mpg is always all over the place. That's why the 4.10 don't bother me

Rone

I'm strongly considering ordering a FX4 with the 4.10's, I'm not planning on hauling anything except ***! The new Tremor comes with 4.10's only.. too much gear? Of course not these trucks have 20" rims and 6 spd trannies. If you could care less about MPG's, and want hard acceleration with a heavy truck (supercrew) like me, it's the only way to go in my book.

I want to know has anyone driven the same truck with 3.73 and 4.10 gearing and can relay a real life comparison with an emphasis on 'off the line' pull and acceleration. It's really hard to find any experienced opinions out there. I've yet to hear anyone who's driven the ecoboost with the 4.10 gears say.. gee, that just too much gear. One guy said it was night and day difference between the two. I test drove the FX4 w/3.73 at the dealer and I wasn't that impressed. I've also been building my own street warriors since my teens. Now I need a truck for work and abhor the idea of giving up my street driving prowess.

Can anyone chime in on this.. Please, no mpg talk, stricly performance. From all my research, the rpm's aren't going to be over anything I'm normally used to and unless I can't step on the gas without smoking the tires every time (doubt it) the 4.10's are where it's at.

Al Kohalic

Taller gears(to a point) take advantage of turbo charged engines broad power band and gaining traction from all the low end power. Just take a look at the quickest Ecoboost times and you will see a vast majority of the leaders are 3.55s. https://www.f150forum.com/f70/ecoboo...s-mods-162637/

papa tiger

If towing heavy why not the 4.10. Toyota's is 4.30 standard with its heavy. Gives U room to do the tire thing. Gears make the truck if U want a worker not a play toy. It's different if U drive it like a car all the time. Toyota's success has come from putting the strong gears in all their trucks for off roading. Geared down U got the axles to take it. MHO

SRPD NY

I have a 2011 eco,max tow and 4:10s with an ssi tune it is ridiculous with acceleration
If your a track guy I think it would work awesome you will have a full 4th gear pull through the trap . Shifts into 4th at 85 and out to 5th at 110

Al Kohalic

Is that why a 3.73 Ecoboost was able to easily hold the speed limit of 60 mph towing 7,200 lbs up the hill and the 4.30 5.7L i-Force could barely maintain 55 mph at full throttle pulling the same load. Sorry guy, but I am going to have to disagree with that statement in bold. It is a combination of engine and the right gearing that make a truck. If it were just about gears then my current work truck Ecoboost 3.15 rear axle would not have towed better then my previous 5.0L 3.55 rear axle work truck did. Some engines need that short gear ratio while other engines don't to get the same job done. Case in point is that Tundra Crewmax 4x4 with 4.30 gears you quoted that has a max tow of 9,500 lbs. That is slightly less then the 9,600 lbs tow rating of a Ford with the same configuration but with 3.55 gears.

papa tiger

You don't notice the gears if U have a quiet exhaust. Open up the exhaust and U close the windows a lot. The 6 speed will snap UR head back some going to 2nd.
Some interesting perspective. Especially the Ford Engineers.
http://news.pickuptrucks.com/2011/04...8-engines.html


The GTDI truck was run with the F-150’s six-speed automatic transmission set in the "2" gear position. Ford’s engineer believed that 1st gear in the EcoBoost F-150 was too short to make low-end power, though there was lots of high-end power, 2nd was just fast enough to get the cams moving while __3rd tended to get the emissions catalyst too "hot," which started to >>> affect backpressure reducing power. <<<
I would read this to mean do not stay for extended periods of time in 3rd. For instance a dino test time. Running low RPM torque dino tests took extreme amounts of time.

Rone

I'd like to thank you for pointing this thread out to me. It's very interesting and I've been studying it now since you posted it yesterday. There are so many variables and mods in these times it's very hard to draw hard fact conclusions. I would like to point out though that stock times are what I'm most interested in right now as they best represent what the bare bones combo has to offer (along with what I'll be stuck with till my warranty runs out) In light of this I copy and pasted the stock times at the bottom of the list and it does seem the 3.73 geared trucks have a very slight edge although again so many variables can influence these stock times. Everything from weather, amount of fuel in the tank, wind resistance/direction and strength, tire pressure, and let's not forget driver skill to name a few.

I'd also like to point out that not one 4.10 geared truck is on that list and it could be due to any number of factors although I suspect it's because it's a rare setup mostly. I'd love to see some 4.10 stock Screw times posted. I have heard the turbo engines favor (slightly) taller gears argument before but the stock tires are big, and lack of bottom end power (around the 1k to 1500 rpm range), turbo lag and vehicle weight still has me leaning toward the 4.10 gear as having a faster launch and 60 ft time although I can see your point in a (again, slightly) taller gear having an advantage in longer runs like the 1/4 mile. Personal preference though has me wanting the faster launch, 0-60, and 60 ft. times over the faster 1/4 mile and long stretch times as this is mostly where I have my fun living in a big city. ~edit: I did indeed find one singular 4.10 geared truck on that list

I'd like to hear more from the guys that actually do drive the 4.10 geared trucks. I feel like if nothing else they simply have to be more fun to drive. So maybe the question is simple then. Which gear launches an ecoboost Screw truck faster? My money is on the 4.10 but I could be wrong. I'll be basing my purchase off of a lot of the feedback here.

14.32 @ 94.14, SICKQK, 2011 Screw, 3.73, stock *quickest stock*
14.35 @ 95.8, ultradriver10000, 2012, SCT 93 tune, DA ~2700'
14.37 @ 94.76, Geno51, 2012 Screw, 4wd, 3.73, stock
14.386 @94.98, Plumbnman, 2011 SCREW, 2wd 3.55, Solo 4" exhaust, AFE Stage 2 intake, stock tune
14.40 @ 94.41, No1ford, 2011 Scab, 4wd, Stock
14.424 @ 94.59, taz1, 2011 Scab, 4wd, stock
14.46 @ 95.1, ultradriver10000, 2012, 5Star 89 tune, DA ~2700'
14.51 @ 91.6, Screw, 4WD, 3.73, Livernois catted downpipe, Livernois 93 Tune, 170 deg Tstat, AFE stage 2 intake
14.53 @ ?, Limitless2011, 2012 Screw, 3.73, Roush exhaust, Superchips tuner, Injen CAI, TB spacer
14.548 @ 94.91, bignfast, 2011 Screw, 2wd, 3.55, stock
14.55 @ 92.32, ajrothm, 2011 Screw, 4wd, 3.73, Livernois 93 tune, 336 rwhp
14.57 @ 94.7, stinebaugh123, 2011 Screw, ?wd, 3.73, AFE 4" exhaust
14.59 @ 92.6, kyrenegade, 2011 ?, 4wd, 3.73, stock
14.67 @ 93.45 Mark Miller, 2011 Scab, 4wd, 3.55, stock
14.68 @ 92, Limitless2011, 2012 Screw, 3.73, Superchips tuner
14.7 @ 90, Jcain, 2011 Screw, 4wd, 3.73, stock, DA 5800'
14.79 @ 94.1, Only306, 2011 Screw LB, 4wd, 3.55, SCT 87 tune
14.79 @ 93.57, focus289, 2012 Screw, 4wd, 3.73, stock
14.85 @ 93 mph, Franchi Motorsports,3.55 gears, SCREW, 4x4, stock
14.88 @ 93.3, Only306, 2011 Screw LB, 4wd, 3.55, stock
14.91 @ 92, 91hybrid, 2011 Scab, 4wd, 3.31, stock
14.97 @ 92, lilthumper, 2012 Screw, 4wd, 3.73, stock
14.98 @ 87.8, Screw, 4WD, 3.73, stock
15.02 @ 91, oxwhite11, 2011 Screw, 4wd, 3.73, stock
15.2 @ 91, heyman, 2011 Screw, 4wd, 3.73, stock
15.20 @ 91.1, ultradriver10000, 2012, stock, DA ~2700'
15.20 @ 89.25, G2G, 2013 SCREW, 4WD, 3.55 STOCK
15.26 @ 90.22, ajrothm, 2011 Screw, 4wd, 3.73, stock