Looking for suggestions on go-fast mods

[AndyG]

Your profile says you only have a throttle body spacer,did that give you 190 hp?or did you do a v/8 swap?

Good post.

If you add a throttle spacer and one of those LS engines under it.....now that is a throttle spacer mod.

 

[JMT]

i want to mod my wrangler to do kinda fast off-roading. it’s got the 4.0, and we swapped out the throttle body so it’s up to about 190hp and 230ftlb. i would love to hit 300hp as a stretch goal, along with other mods like upgrading the cage. the issue is my dad isn’t keen on me spending his money on it. any suggestions for cheap mods, or things i can do myself? (im studying mechanical engineering and can maybe engineer some stuff)

The easiest way to get up to 300hp is to do a 4.6L stroker, supercharger, or turbocharger.

The hardest way is to do an engine swap.

The way your going with throttle bodies and simple engine mods will never get you even close.

Then there's the suspension.

It would be way cheaper to sell the Jeep, get a Razr, and go have fun.

 

[AndyG]

The easiest way to get up to 300hp is to do a 4.6L stroker, supercharger, or turbocharger.

The hardest way is to do an engine swap.

The way your going with throttle bodies and simple engine mods will never get you even close.

Then there's the suspension.

It would be way cheaper to sell the Jeep, get a Razr, and go have fun.

Then be like a guy I know, selling his Razor , to get a TJ , to go have fun.....

Both are a blast, his wife hates the cold, wet razor with limbs slapping her face

 

[jjvw]

I'd also say, a go fast suspension would take priority over a go fast engine in my world.

prothane coil spring inserts

 

[Apparition]

prothane coil spring inserts

 

[Chris]

I'd also say, a go fast suspension would take priority over a go fast engine in my world.

Absolutely, he would be much smarter to focus on a good suspension setup first.

 

[jjvw]

View attachment 282842

You brought a gun to a pillow fight.

 

[Apparition]

You brought a gun to a pillow fight.

I'd post a picture of the LS too but it's not here yet

 

[hear]

Add lightness. Light is fast and easier on everything.

and Leave Out The Unnecessary Stuff

 

[L J]

i want to mod my wrangler to do kinda fast off-roading.

no

things i can do myself?

sell the TJ and buy someone's abandoned "pre-runner" truck project

 

[Vasq]

You brought a gun to a pillow fight.

damn. I thought i was swinging heavy because i brought a down pillow.. now i just feel unprepared..

 

[Xposure]

If your TJ is geared correctly for your tire size, it has enough power to go faster off road than your suspension can handle. So upgrade all the suspension and axles first so that it can take the abuse of you putting the skinny pedal to the floor when off road. Once all that's covered then you start increasing power.

Or sell the Tj and get a razor or bad ass 4 wheeler.

 

[06lj]

Why is the 1999 4.0 rated at 181 in the TJ but 190 in the XJ?

I believe it is due to the TJ's exhaust. Although it does make you wonder if Jeep under rated it so the premium vehicles could claim higher horsepower. The Grand Cherokee 4.0 was rated at 195.

 

[JMT]

I think the OP has “left the building.”

 

[chimmike]

Want to go fast off-road?
Get a junkyard 6.0 LS and a GT35R single turbo. Swap that into your TJ with a 6R80 and new t-case, and built dana 60s.

OK, now that fantasyland is over.......

 

[jjvw]

Want to go fast off-road?
Get a junkyard 6.0 LS and a GT35R single turbo. Swap that into your TJ with a 6R80 and new t-case, and built dana 60s.

OK, now that fantasyland is over.......

I have a hunch that those is us with well built suspensions under our 4.0's could potentially go faster over rough ground.

 

[Chris]

I think the OP has “left the building.”

Once they get a dose of reality they usually do. Remember the last guy who installed the throttle body spacer? Never heard from him again after we told him he’d been fooled.

Like I said, people can’t handle the truth sometimes. They want to feel good about the purchase they made, even if it was a complete waste of money.

But you know…bolt on that bigger throttle body and get ready for some serious power

 

[Moglocker]

and Leave Out The Unnecessary Stuff

Plus, lite is cheap,ohh wait a minute,no it’s not! (Lol)

 

[srimes]

I believe it is due to the TJ's. Although it does make you wonder if Jeep under rated it so the premium vehicles could claim higher horsepower. The Grand Cherokee 4.0 was rated at 195.

Due to the TJ's what?

 

[06lj]

Exhaust.

Dang android keyboard!