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Low End Power
- Thread starter tbone88
- Start date
What axles and size of tire are you running ( or ever plan to run with those axles?)?
Regear my friend.
jasongind
Well-Known Member
1.8:1 roller rockers and Under drive pullies
Re gearing could be an option if you do lots of towing, but it would hurt performance and power in other areas. It just depends what you use your truck for. The Underdrive pulleys are a great option, and I'd highly recommed an sct X-cal tuner from rogue performance. Fred can write custom tunes for your truck that account for any mods you may have, and offers mileage, performance, and towing tunes on various fuels. Plus he knows his stuff when it comes to the 3.0. If you're planning new mods, I'd save the tuner for the very end though, so that the tunes can be written to include your list of mods. Happy modding!
OMG.......
Regearing will NOT hurt performance on a 3L.
MAF, intake, mods will more than likely @#$% things up, and do nothing for "power".
It's been proven over, and over, and over, and over, and over, and over.... (should I really keep going?)..... that the 3L needs to reach higher rpm more quickly in order to perform. Hence lower gearing.
I hated my truck with 3.73's, I like it much better with 4.10's, I have a feeling I'd love it more with 4.56's.....all with a 31" tire.
For example: 4.10's with 235 75 R15's would work quite well.
It's all in mechanical leverage. The time and money wasted on intake, exhaust, ignition, etc, won't amount to anything. Forced induction on the other hand......maybe....but that will take some $$$ to setup properly.
Regearing will NOT hurt performance on a 3L.
MAF, intake, mods will more than likely @#$% things up, and do nothing for "power".
It's been proven over, and over, and over, and over, and over, and over.... (should I really keep going?)..... that the 3L needs to reach higher rpm more quickly in order to perform. Hence lower gearing.
I hated my truck with 3.73's, I like it much better with 4.10's, I have a feeling I'd love it more with 4.56's.....all with a 31" tire.
For example: 4.10's with 235 75 R15's would work quite well.
It's all in mechanical leverage. The time and money wasted on intake, exhaust, ignition, etc, won't amount to anything. Forced induction on the other hand......maybe....but that will take some $$$ to setup properly.
OMG.......
Regearing will NOT hurt performance on a 3L.
It's been proven over, and over, and over, and over, and over, and over.... (should I really keep going?)..... that the 3L needs to reach higher rpm more quickly in order to perform. Hence lower gearing.
I hated my truck with 3.73's, I like it much better with 4.10's, I have a feeling I'd love it more with 4.56's.....all with a 31" tire.
For example: 4.10's with 235 75 R15's would work quite well.
It's all in mechanical leverage. The time and money wasted on intake, exhaust, ignition, etc, won't amount to anything. Forced induction on the other hand......maybe....but that will take some $$$ to setup properly.
The OP never said what gears he currently has, or what mods (if any). Most mods you do, suspension, engine, or drivetrain have both a give and take. They affect performance in one area, while sacrificing in other areas. Simply telling him to get taller gears without knowing what he has is reckless. All you're doing by changing to a taller gear ratio, is moving the powerband lower. By doing that, you get less acceleration in the "top end". On the other hand, you CAN make improvements to your engine that actually add power, rather than just changing when it's available, and make the 3.0 much more liveable.
Big Jim M
Well-Known Member
What Tbone said!
He wrote: All of the power in the 3.0L is higher up in the rpm range. Is there any way to get more power down low for towing and offroading?
The obvious answer is to change tires for shorter or change gears for more RPM!
All those aftermarket things guys do to their rides WON'T noticeably help offroad or towing! I can't think of one mod to do that would help for these things. Only tires and gears.
Big JIm
He wrote: All of the power in the 3.0L is higher up in the rpm range. Is there any way to get more power down low for towing and offroading?
The obvious answer is to change tires for shorter or change gears for more RPM!
All those aftermarket things guys do to their rides WON'T noticeably help offroad or towing! I can't think of one mod to do that would help for these things. Only tires and gears.
Big JIm
I don't want to seem "anti gears". haha. I understand that proper gearing is essential to getting the best performance out of any vehicle, but since no specs were given by the op, it's difficult to suggest a good direction to go. If he's currently running 4.10's or 4.56's for example, then the problem is most likely not with his gear ratio, it's a lack of power. It just seems to me that mods that increase power on the 3.0 (like underdrive pulley's, roller rockers, and a good tuner) have very little downside. Switching to a taller gear set has the larger downside IMO of losing top end power, increased wear due to higher revving, and loss of fuel mileage.
On a sidenote, BigJim, I'm a fairly new member here, and don't know much about your truck. You seem to be very knowledgable. Out of curiosity what have you done to it?
On a sidenote, BigJim, I'm a fairly new member here, and don't know much about your truck. You seem to be very knowledgable. Out of curiosity what have you done to it?
Big Jim M
Well-Known Member
Nothing!
On a sidenote, BigJim, I'm a fairly new member here, and don't know much about your truck. You seem to be very knowledgable. Out of curiosity what have you done to it?
If you mean where have I driven it, Some of the worst trails on Texas ranches.
If you mean what have I done to a perfectly well designed Ford FX4, nothing.
The sohc does everything it can do straight from the factory.
All these "mods" that come in a bright red package don't do squat for a well designed engine package.
I have to laugh at some of the"mods" that are being bantered around. Example would be rockers with higher lift... If they did anything for a stock engine it would be more mixture in the chamber..wouldn't it? Well if there was more mixture in there, the engine would CLATTER.. upon clattering the engine computer would richen the mixture and retard the timing to SHUT UP the noise.. So what POSSIBLE gain could there be by adding higher lift rockers???
That is only one example of many that I could recite.
Big JIm
On a sidenote, BigJim, I'm a fairly new member here, and don't know much about your truck. You seem to be very knowledgable. Out of curiosity what have you done to it?
If you mean where have I driven it, Some of the worst trails on Texas ranches.
If you mean what have I done to a perfectly well designed Ford FX4, nothing.
The sohc does everything it can do straight from the factory.
All these "mods" that come in a bright red package don't do squat for a well designed engine package.
I have to laugh at some of the"mods" that are being bantered around. Example would be rockers with higher lift... If they did anything for a stock engine it would be more mixture in the chamber..wouldn't it? Well if there was more mixture in there, the engine would CLATTER.. upon clattering the engine computer would richen the mixture and retard the timing to SHUT UP the noise.. So what POSSIBLE gain could there be by adding higher lift rockers???
That is only one example of many that I could recite.
Big JIm
Froggmann
Well-Known Member
Regearing is an option depending on what gears you already have.
U/D crank pulley is a cheap, worthwhile mod that has dyno proven gains and better fuel economy. A lot of people have had great success with the e-fan (myself included). Rockers aren't cheap, but they do have proven gains.
U/D crank pulley is a cheap, worthwhile mod that has dyno proven gains and better fuel economy. A lot of people have had great success with the e-fan (myself included). Rockers aren't cheap, but they do have proven gains.
Big Jim, it sounds like you've got yourself a nice rig! Those levelII's are a great base for some mods! (Although it sounds like you're happy the way it is.)
Higher lift roller rockers have been used sucessfully on pushrod motors for years. Here's some anectdotal evidence you may find interesting: http://www.rangerpowersports.com/forum/showthread.php?t=265087
This person didn't see huge gains in off the line acceleration, but they are gains none the less. The difference would be more noticeable higher in the power band through the 1/4 mile rather than the 1/8th.
Higher lift roller rockers have been used sucessfully on pushrod motors for years. Here's some anectdotal evidence you may find interesting: http://www.rangerpowersports.com/forum/showthread.php?t=265087
This person didn't see huge gains in off the line acceleration, but they are gains none the less. The difference would be more noticeable higher in the power band through the 1/4 mile rather than the 1/8th.
Last edited:
Big Jim M
Well-Known Member
Howdy Mitch
Hey I can't quarrel with 1/4 mile times on built engines. My quarrel is with adding high lift rockers helping the drive to the grocery store. There is no way the computer will allow more fuel into the chamber and not have huge complaints.
If one is modifying the complete engine to make 1/4 runs it would be a high priority item to add. HOWEVER if one is simply doing a good tune-up and adding high lift rockers there will be no gain...none!
As stated before the computer will retard the timing and richen the mixture to stop the clatter if the new rockers actually add mixture to the combustion chamber...therefore NO GAIN!
Big JIm
Hey I can't quarrel with 1/4 mile times on built engines. My quarrel is with adding high lift rockers helping the drive to the grocery store. There is no way the computer will allow more fuel into the chamber and not have huge complaints.
If one is modifying the complete engine to make 1/4 runs it would be a high priority item to add. HOWEVER if one is simply doing a good tune-up and adding high lift rockers there will be no gain...none!
As stated before the computer will retard the timing and richen the mixture to stop the clatter if the new rockers actually add mixture to the combustion chamber...therefore NO GAIN!
Big JIm
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