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Unread 02-02-2013, 09:18 AM   #1
BigMikeOfTO
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HEMI Coversion Kit vs Supercharger

So I'm thinkin I'm gonna drop some $ under the hood. If I had the money I would jus swap it out or a true HEMI but life of a single dad does not allow funds for that. Is the HEMI conversion kit worth it with respect to power or should I jus be dropping in a supercharger?
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Unread 02-02-2013, 09:49 AM   #2
Alaska-HWY JK
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IMO neither. Look up MoTech LS Wrangler, get some GM under the hood. Won't run hot, better fuel mileage, and a 6 speed auto transmission with low first great that will shift when it's supposed to. The Chrysler transmissions are crap.
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Unread 02-02-2013, 10:03 AM   #3
MeatCurtains
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A supercharger is much cheaper and still produces results. I've seen hemi swaps upwards of 20k.

Now, if you have disposable income go with the cummins 4bt swap. I think you can get upwards of 400 ft/lbs out of it.
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Unread 02-02-2013, 10:26 AM   #4
BigMikeOfTO
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I don't have a disposable income. AEV has the conversion kit for the 3.8 for roughly 5300.00. Supercharger is a lot less. Swapping the engine for a bigger better is taking me out of budget. I'm wondering if the conversion kit will give me roughly the same outcome as the supercharger. Would I significantly notice a difference between the two?

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Unread 02-02-2013, 10:32 AM   #5
RockyClymer
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5300 is just part of the cost. You still need the engine and labor (unless DIY). Total cost can get up to 20k depending on how you do it. So, U need to compare apples to apples!
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Unread 02-02-2013, 10:35 AM   #6
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I'd go with forced induction if you're on a budget. The $5300 kit plus cost of a Hemi will be expensive. A supercharger will wake up the 3.8 for less than 1/4 the cost of a Hemi transplant. I've been in a Hemi powered and supercharged JK and both were impressive. The sound of the V8 was badass but comes at a much higher price.
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Unread 02-02-2013, 10:48 AM   #7
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I did the RIPP SC for 1/4 the price of a Hemi/LS swap. Disposable income? What's that? The 3.8L has a lot in it, just needs a SC to unleash that power. It's more than enough excitement for me. It may not have the sound of a V8 , but the SC whine is pretty cool to listen to.

The RIPP SC will get you within 30 HP of the Hemi 5.7 at less than $5000. It's enough power to break rear D44 axles and twist driveshafts in half. Ask me how I know. D'oh!
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Unread 02-02-2013, 11:08 AM   #8
Wavedatya
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I had the hemi in a dodge ram and I was able to make that thing fly almost. Pound for pound the hemi is a great engine that produces good numbers.

I was able to keep up with a caliber SRT 4 lol. 285HP in a car and until he hit 3rd gear I had him.

To save money go with supercharger
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Unread 02-02-2013, 11:41 AM   #9
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With our kit an LS can be installed for under $9k, not much more than an intercooled SC with labor. Granted you will be out 40-50 hours of your labor but you might even have fun doing it.

In the end you have a real V8 with linear power output, good mpg and should last over 200,000 miles. If you keep your JK for a long time the V8 pays off by it's longevity. I would expect to go through at least one addition 3.8 before your got the same miles as a LS.
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Unread 02-02-2013, 12:33 PM   #10
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Quote:
Originally Posted by VEGASROBBI
With our kit an LS can be installed for under $9k, not much more than an intercooled SC with labor. Granted you will be out 40-50 hours of your labor but you might even have fun doing it.

In the end you have a real V8 with linear power output, good mpg and should last over 200,000 miles. If you keep your JK for a long time the V8 pays off by it's longevity. I would expect to go through at least one addition 3.8 before your got the same miles as a LS.
So does that price include a New motor and tranny with warranty. i can do a Hemi swap for that price easily if i get a motor and tranny from a wrecker. Otherwise Sounds like a good price if you want a V8, however I doubt an LS will outlast 1 3.8 let alone 2. There are many 3.8s out there with well over 100,000 miles and no issues.
Back to topic the SuperCharger is gonna be the most cost effective. There are a few to choose from now, Sprintex, Ripp, Magnison.
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Unread 02-02-2013, 01:13 PM   #11
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Originally Posted by JTPhoto View Post

So does that price include a New motor and tranny with warranty. i can do a Hemi swap for that price easily if i get a motor and tranny from a wrecker. Otherwise Sounds like a good price if you want a V8, however I doubt an LS will outlast 1 3.8 let alone 2. There are many 3.8s out there with well over 100,000 miles and no issues.
Back to topic the SuperCharger is gonna be the most cost effective. There are a few to choose from now, Sprintex, Ripp, Magnison.
LOL When you get 300,000 miles on a blown 3.8 we'll have that discussion.
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Unread 02-02-2013, 01:38 PM   #12
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Quote:
Originally Posted by BigMikeOfTO View Post
I don't have a disposable income. AEV has the conversion kit for the 3.8 for roughly 5300.00. Supercharger is a lot less. Swapping the engine for a bigger better is taking me out of budget. I'm wondering if the conversion kit will give me roughly the same outcome as the supercharger. Would I significantly notice a difference between the two?

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Not to be a goof...
But you do realize you are not "converting" your 3.8 into a 5.7 or LS for that matter? You are buying a conversion kit facilitating the use of afforementioned V8s. Which *important* must still be acquired. And installed *not simple*.

Some of your wording is confusing.
S/C is substantially cheaper taking all this into consideration.
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Unread 02-02-2013, 02:03 PM   #13
BigMikeOfTO
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I realize you still need the motor.

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Unread 02-02-2013, 02:09 PM   #14
brianjw
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Supercharging is cheaper but I would be surprised to see a blown 3.8 last a long time as well. There is a big difference in reliability and durability between an underworked V8 and an overstressed supercharged v6.
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Unread 02-02-2013, 02:24 PM   #15
BigMikeOfTO
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So by putting in the HEMI, it only gives roughly 30 more hp apposed to the SC?i know I wouldn't be getting true V8 performance, but for only 30hp more? Seems almost like a no brainer

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