? For A Little More Gitty Up On 98 5.4
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Senior Member
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From: GA
? For A Little More Gitty Up On 98 5.4
does anyone have any good suggestions on more horsepower and all that good stuff for my 98 5.4 ? its a 4x4 and i recently put on 285/75/16 bfg mud terrains and it feels sluggish as far as gettin up and gettin gone ( if ya know wat i mean) but just regular shifting feels sluggish! anyways , all suggestions are appreciated! 
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Joined: Jan 2005
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From: Madison, WI
In a nutshell I think you have way too much wheel and tire for your rear end gears. What gear ratio do you currently have?
I assume you did not change gears when you went with bigger tires. As an example, I also have a '98. It came stock with 3.55 rear end gears. Now I am running stock tires and wheels and I still changed my rear end gears to 4.10s.....and life is good with that gear ratio. You need at least 4.56 gears to handle those big tires.
Basically, you have really lugged your engine with those tires -- even worse when truck is at highway speeds in overdrive.
Of course with 4wd you would have to change both ends of the truck gears.
Best of luck
enb
I assume you did not change gears when you went with bigger tires. As an example, I also have a '98. It came stock with 3.55 rear end gears. Now I am running stock tires and wheels and I still changed my rear end gears to 4.10s.....and life is good with that gear ratio. You need at least 4.56 gears to handle those big tires.
Basically, you have really lugged your engine with those tires -- even worse when truck is at highway speeds in overdrive.
Of course with 4wd you would have to change both ends of the truck gears.
Best of luck
enb
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Joined: May 2004
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From: Sunny FL
You need gears, and a tuner wouldn’t hurt either
Here’s a gear ratio guide web page that will help you figure out the rpm difference from stock tires to the size you got now
Gear Ratio Guide for Larger Tires
Here’s a gear ratio guide web page that will help you figure out the rpm difference from stock tires to the size you got now
Gear Ratio Guide for Larger Tires
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Senior Member
Joined: Nov 2005
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From: GA
THANX GUYS! i was hoping i wouldnt hear the gears, but looks like i may have to! almost everybody suggested this tire size when i gite them, and they said awww... it wont slow it down! wellllllllll it hurt me a little bit. its not terrible, but i like for my stuff to run right. ne ways, thanx again for the help. oh yeah JPDADEO.. DO YOU HAVE ANY SUGGESTIONS ON WHAT TYPE OF TUNER?
THANX
THANX
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Joined: Mar 1998
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From: Virginia
Hi RANCHER150,
Actually, before rushing into a $1500+ gear ratio change with tires that aren't even 33" tall, I would strongly suggest doing some other things that most people find are perfectly adequate for tires up to about 33" tall.
For example, the single best bang for the buck is to have us do our Troyer Performance custom tuning - which will cost you far less than changing gears, and will actually increase the engine's power, which gears don't do.
Now what changing gears does is to increase the amount of torque *multiplication*, and in some cases that is indeed the route to go - for example, if you had 35" tires on there, I'd say drop a set of 4.56's in there. But for the under 33" tire that you have, the first thing I would do is to have us provide our custom tuning for that vehicle to actually increase it's available horsepower and torque from the engine all the time, at any throttle position or rpm, and it provides many other benefits that aid available power to the rear wheels as well - it cost much less, and you may well find that it's enough to make you happy.
What we generally advise is to do our tuning, intake & cat-back exhaust system before going for the gear ratio change if you have tires shorter than about 33-34 inches, simply because for most truck owners, that gives them the performance they are looking for and they have still spent less money than they would on gears alone for a 4x4 vehicle. And then if at that point you *still* feel that you want to do a gear ratio change, fine - you will have significantly more power *and the added torque multiplication from the gears.
Don't get me wrong, I have nothing against gears, it's simply a matter of what will do the trick in most situations from a bang for the buck standpoint - though I do not recommend it, we have a lot of customers running 35's with just our tuning and they are happy with it - now me personally, with *that* much tire (meaning 35"), I would want the gear ratio change *and* the tuning, but where you are at, not even 33", I see the gear ratio change as something you do not need to jump into first.
I hope this brief info helps, & please feel free to give us a call to go over this in more detail, we'll be happy to answer any questions, etc., and if we feel that doing a gear ratio change *is* the thing to do in your case, we won't hesitate to say so - but give us ac all to go over this properly first, so we can discuss how you use your vehicle, and other aspects that need to be considered before making that kind of decision.
Best of luck whatever you decide,
Actually, before rushing into a $1500+ gear ratio change with tires that aren't even 33" tall, I would strongly suggest doing some other things that most people find are perfectly adequate for tires up to about 33" tall.
For example, the single best bang for the buck is to have us do our Troyer Performance custom tuning - which will cost you far less than changing gears, and will actually increase the engine's power, which gears don't do.
Now what changing gears does is to increase the amount of torque *multiplication*, and in some cases that is indeed the route to go - for example, if you had 35" tires on there, I'd say drop a set of 4.56's in there. But for the under 33" tire that you have, the first thing I would do is to have us provide our custom tuning for that vehicle to actually increase it's available horsepower and torque from the engine all the time, at any throttle position or rpm, and it provides many other benefits that aid available power to the rear wheels as well - it cost much less, and you may well find that it's enough to make you happy.
What we generally advise is to do our tuning, intake & cat-back exhaust system before going for the gear ratio change if you have tires shorter than about 33-34 inches, simply because for most truck owners, that gives them the performance they are looking for and they have still spent less money than they would on gears alone for a 4x4 vehicle. And then if at that point you *still* feel that you want to do a gear ratio change, fine - you will have significantly more power *and the added torque multiplication from the gears.
Don't get me wrong, I have nothing against gears, it's simply a matter of what will do the trick in most situations from a bang for the buck standpoint - though I do not recommend it, we have a lot of customers running 35's with just our tuning and they are happy with it - now me personally, with *that* much tire (meaning 35"), I would want the gear ratio change *and* the tuning, but where you are at, not even 33", I see the gear ratio change as something you do not need to jump into first.
I hope this brief info helps, & please feel free to give us a call to go over this in more detail, we'll be happy to answer any questions, etc., and if we feel that doing a gear ratio change *is* the thing to do in your case, we won't hesitate to say so - but give us ac all to go over this properly first, so we can discuss how you use your vehicle, and other aspects that need to be considered before making that kind of decision.
Best of luck whatever you decide,
GOSH I LOVE THIS SITE! AGAIN , THANX FOR THE INFO!!!!
