Lowering my lift - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 08-06-2009, 03:17 PM Thread Starter
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Lowering my lift

I just did a round trip to Austin and back to Houston, averaged 13 mpg on the highway babying it, running a half bottle of diesel kleen in both tanks. My chip was set to Eco the whole way never changed it. I know my truck isn't going to get anything outstanding, but i was hoping for something better than 13 mpg when not even towing anything. I've been thinking about lowering my lift for a while and this just about made up my mind.

I see my lift is set up on two blocks front and rear, a 4" block with a 2" block stacked on top. Also i believe i have 3 added leaf springs on my front axle, compared to how many i have on my rear axle. Although that may be how it comes, i'm sure you guys would know more than me. My question is, if i take out the 4 2" blocks i have out from under each set of leaf springs and drop my truck 2", will everything still preform properly? Will it sit lopsided or is there more i need to do? It can't really be that simple...right?

Right now my plan is pretty simple, take off my wheels, slip out the 2" blocks, put the wheels back in place...and that's about it. Any info or tips on how to do this will be greatly appreciated.

2000 F250 XLT SB SC Auto
6" Lift, 37" BFG KM2's, 18" V-Tec Raptors, DIY Intake, Muffler Delete,
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post #2 of 11 Old 08-06-2009, 08:55 PM
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so you have a 6 in lift lift and 32 in tires? i dont know if lowering it will make much off a difference on mpg? i have 35's and I get 15 putting my foot in it a little,
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post #3 of 11 Old 08-06-2009, 09:17 PM
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Oh i see well good luck with it.
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post #4 of 11 Old 08-07-2009, 06:29 AM
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I just took a trip to Atlantic city and my final average was 18.8 mpg I have a 10 inch lift with 38 inch tires. It probobly helps that I have a 6 speed though.

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post #5 of 11 Old 08-07-2009, 06:36 AM
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It's not really the lift that causes poor mileage. It's the tire size change and in most cases the gearing that causes a change in mileage. I still have 373 ratio gears with a 38 inch tall tire and a 6 spedd so I can cruise down the highway at 85 mph and stay rite around 2,000 rpm I was having a problem with fuel mileage and it actually turned out to be the copper washers on a couple of my injectors causing the problem. I couldn't figure it out untill I took the injectors out to put in my swamps ones and my fuel mileage jumped back up.

SUPER DUTY SPRINGS
33'S
GAUGES
AIH DELETE
6637 AIR FILTER
CCV MOD
DP TUNER F5
SWAMPS 175/146 SINGLE SHOTS
4" EXHAUST
CLEAR HEADLIGHTS
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post #6 of 11 Old 08-07-2009, 07:10 AM
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I don't think taking out your lift will do you any good. I average 18mpg on the interstate at 75mph with 35's and 3.73 gears.

1999.5 Ford F-250 7.3l 4x4 PSD DI Short block, Ported Heads, Head studs, Over size valve springs, DI Push Rods, DI RR, GTP38R, GSL 392 fuel pump with 3/8 line feeding 238cc Injectors from Nate @ Unlimited Diesel and Live Tuned By Matt @ Gearhead Automotive

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post #7 of 11 Old 08-07-2009, 08:40 AM
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Stripping your lift is going to do next to nothing for your mileage. As stated, tire mass and gear ratio are the largest factors in hampering or helping mileage, aside from engine condition, drive train set up, and driving habits. My truck averages 20mpg highway if I keep to the speed control. Stock height, 3.73 gears, 285/75r16 BFG ATs. Yes, Blizzard is a 4x4.

"Blizzard" The big white bio-burning 03 7.3. 6637, straight piped stock exhaust, and a "New" secret blend of Haul asBLEEPsing mods and upgrades. Suffice to say, its not the fastest, but it quite possibly is one of the quickest.
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post #8 of 11 Old 08-07-2009, 09:14 AM
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Quote:
Originally Posted by Shooter04 View Post
My question is, if i take out the 4 2" blocks i have out from under each set of leaf springs and drop my truck 2", will everything still preform properly? Will it sit lopsided or is there more i need to do? It can't really be that simple...right?

Right now my plan is pretty simple, take off my wheels, slip out the 2" blocks, put the wheels back in place...and that's about it. Any info or tips on how to do this will be greatly appreciated.

I do not believe that it is that easy. You would need a new trac bar bracket for a 4" lift so it would not push the axle over. Steering should be fine but you might have to adjust it a little to get the steering wheel stright. But i dont think that lowering the truck is going to to do anything for your fuel economy. Not sure if its the same way on the 7.3 but most people say the hotter tunes yeild better MPG.

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post #9 of 11 Old 08-07-2009, 09:16 AM
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Quote:
Originally Posted by FX4 F2-Fifty View Post
I do not believe that it is that easy. You would need a new trac bar bracket for a 4" lift so it would not push the axle over. Steering should be fine but you might have to adjust it a little to get the steering wheel stright. But i dont think that lowering the truck is going to to do anything for your fuel economy. Not sure if its the same way on the 7.3 but most people say the hotter tunes yeild better MPG.
I wouldn't say that. With some tuners it is true with the ones the know what they are doing though there economy files are the best

1999.5 Ford F-250 7.3l 4x4 PSD DI Short block, Ported Heads, Head studs, Over size valve springs, DI Push Rods, DI RR, GTP38R, GSL 392 fuel pump with 3/8 line feeding 238cc Injectors from Nate @ Unlimited Diesel and Live Tuned By Matt @ Gearhead Automotive

Auto to ZF6 Swap Completed

520hp and 926tq - 5/23/09

516hp and 1121tq - 4/24/10

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post #10 of 11 Old 08-07-2009, 09:36 AM
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Quote:
Originally Posted by Big_Stroker View Post
I wouldn't say that. With some tuners it is true with the ones the know what they are doing though there economy files are the best
Thanks. I wasnt sure how it was with diffrent tuners.

2004 F250 CC Lariat SB FX4
ARP Studs
Modified S300
Elite 205's
EGR MIA
Elite Stage 2 Fuel
ZEX Nitrous
Airaid Intake
Accufab Elbow
Autometer Gauges
Magnaflow SS Exhaust
Innovative Tunes
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