Jeep JK stroker

Newbies, and basic Stroker Recipes... Get started with your first stroker here!!
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bigal389
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Jeep JK stroker

Post by bigal389 »

Ok it’s been a while since I’ve been here but here goes.
I have sold my Tj and stroker, and bought a Jk with the 3.8 and I want to stroke it but the only place I can find anything on stroking the 3.8 is 505. Does anyone have any insight into getting the 3.8 stroked?
Thanks, Al
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SkylinesSuck
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Re: Jeep JK stroker

Post by SkylinesSuck »

Stay away from 505.

Is the 3.8 worth messing with, even stroked? I've always heard it was a real boat anchor.
bigal389
I made it to triple digits!
I made it to triple digits!
Posts: 102
Joined: February 5th, 2015, 4:55 am
Stroker Displacement: 4.6
Vehicle Year: 2004
Vehicle Make: Jeep
Vehicle Model: Wrangler X

Re: Jeep JK stroker

Post by bigal389 »

I here mixed info. They do make supercharger and turbo kits for it with good luck but I’m not sure I want to go that route.
Al
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Cheromaniac
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Re: Jeep JK stroker

Post by Cheromaniac »

Do a 392 Hemi swap. There. Fixed it. ;)
1992 XJ 4.6 I6 - 5MT - Stroker build-up, Stroker "recipes" Sold
1995 Mustang GT - 4AT - Modded Sold
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bigal389
I made it to triple digits!
I made it to triple digits!
Posts: 102
Joined: February 5th, 2015, 4:55 am
Stroker Displacement: 4.6
Vehicle Year: 2004
Vehicle Make: Jeep
Vehicle Model: Wrangler X

Re: Jeep JK stroker

Post by bigal389 »

I would love to drop a 392 in it. Anybody want to donate to the cause?
Al
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SkylinesSuck
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Re: Jeep JK stroker

Post by SkylinesSuck »

Probably cheaper than the 3.8 stroker if you can use the same tranny.
bigal389
I made it to triple digits!
I made it to triple digits!
Posts: 102
Joined: February 5th, 2015, 4:55 am
Stroker Displacement: 4.6
Vehicle Year: 2004
Vehicle Make: Jeep
Vehicle Model: Wrangler X

Re: Jeep JK stroker

Post by bigal389 »

Nah the trannie is the 42rle and it won’t hands a Hemi at all.
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Cheromaniac
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Re: Jeep JK stroker

Post by Cheromaniac »

Find a totaled Dodge Charger or Challenger SRT8 to use as a parts donor.
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SkylinesSuck
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Re: Jeep JK stroker

Post by SkylinesSuck »

I don't think most people in here are familiar with the newer motors. Maybe you could become our resident expert? :banana:

The only experience with 3.8 strokers I've had is just shooting the breeze with a guy that had one. He didn't sound impressed and wanted a ride in mine. He said my Jeep would absolutely smoke his, but he an auto and it was a 4 door JK so definitely not an apples to apples comparison.

I think the real reason there is so much interest in stroking the straight 6 is because it's a healthy motor to begin with but more importantly it can be done with many factory parts. Not that many people in here have cheeap builds, but I think the cost of rebuilding a standard I6 vs stroking it is negligible. How much do 3.8 stroker kits cost?
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SkylinesSuck
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Re: Jeep JK stroker

Post by SkylinesSuck »

I just looked them up. It only brings them up to a 4.1L? Totally not worth it. And like we mentioned about 505......

https://www.jkowners.com/forum/engine-s ... 370?page=1
bigal389
I made it to triple digits!
I made it to triple digits!
Posts: 102
Joined: February 5th, 2015, 4:55 am
Stroker Displacement: 4.6
Vehicle Year: 2004
Vehicle Make: Jeep
Vehicle Model: Wrangler X

Re: Jeep JK stroker

Post by bigal389 »

Sorry I’ve been out of touch, was on vacation in Alaska. Resident expert, if so I have a lot of learning to do. The cost from 505 is comparable to a rebuild with all new internals. I may just have to build it with tried and true methods. 505 also has the only performance cams available but I can get a regrind to solve that. Compression is already 9.6:1, headers are available but very expensive, Ripp claims 54 rwhp and 30 ft pounds with their headers and tune for about 2 grand. I’m not sure of the quench or camber volume yet, I do have a core but have had a chance to get it torn down to get some specs yet.
Al
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