Which stroker kit to pick 4.6, 4.7, or 4.8? - Jeep Wrangler Forum
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Old 11-11-2013, 09:39 PM   #1
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Which stroker kit to pick 4.6, 4.7, or 4.8?

Looking at this site going to give them a call in the AM. But I am honestly not sure which to choose.

HOME

Also looking at these kits too

Jeep 4.0 Stroker Kits - Stroker Kits

opinions.

-ax-15 tranny just rebuilt
-8.8 rear end w/ 4.10's
-33's going to 35's next month

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Old 11-12-2013, 01:46 PM   #2
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Well if you have any mechanical ability check out jeepstrokers.com (even if you dont you could still have a competent shop build you one for less than the average 4.7 stroker costs)
The site lists as much technical info that you could ever need in order to build your own low buck stroker.
Check out the 4.2 mini stroker recipes

Jeep Strokers • New 4.2L mini-stroker recipes

I had one in a YJ and for the money there is no better bang for your buck!
[/URL]

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Old 11-12-2013, 01:51 PM   #3
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Sounds like a fun project

Are you going to buy one of the kits and install it yourself? Do you have a good machine shop to do the work to the block?
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Old 11-14-2013, 12:00 PM   #4
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Bump bump
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Old 11-15-2013, 11:30 AM   #5
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Quote:
Originally Posted by TJK8 View Post
Well if you have any mechanical ability check out jeepstrokers.com (even if you dont you could still have a competent shop build you one for less than the average 4.7 stroker costs)
The site lists as much technical info that you could ever need in order to build your own low buck stroker.
Check out the 4.2 mini stroker recipes

Jeep Strokers • New 4.2L mini-stroker recipes

I had one in a YJ and for the money there is no better bang for your buck!
[/URL]
What did it run you cost wise
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Old 11-15-2013, 03:47 PM   #6
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Right around $1,500 parts and machine work. Assemble it yourself...straight 6 Jeep engines are about as easy as it gets. Google and a Chiltons manual are your friend. Only downside was using premium fuel...however the power was definitely impressive.
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Old 11-15-2013, 04:33 PM   #7
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Quote:
Originally Posted by TJK8 View Post
Right around $1,500 parts and machine work. Assemble it yourself...straight 6 Jeep engines are about as easy as it gets. Google and a Chiltons manual are your friend. Only downside was using premium fuel...however the power was definitely impressive.
So you only stroked it to a 4.2 or did I read something wrong. And you orders all the party's individually?
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Old 11-15-2013, 04:41 PM   #8
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I used the "Wilder" recipe listed below...it is a 4.2 crank in an overbored 4.0 block so its really about a 4.4L

Yes you can just used CL or Ebay for all the parts you need.


4.2L Milder mini-stroker

AMC 232 3.500" stroke crank
Jeep 4.0L 6.125" rods
Silvolite UEM-2229 +0.060" bore pistons
Increase piston dish volume to 15cc
9.6:1 CR
CompCams #68-231-4 206/214 degree camshaft
Ported HO 1.91"/1.50" cylinder head
Mopar/Victor 0.043" head gasket
0.040" quench height
Ford 24lb/hr injectors with adjustable FPR or MAP adjuster for '87-'95 engines, Ford 24lb/hr injectors for '96-'04 engines, '99-'00 Chevy LS1 26.2lb/hr injectors for '05-'06 engines
262hp @ 5200rpm, 302lbft @ 3750rpm

4.2L Wilder mini-stroker

AMC 232 3.500" stroke crank
Jeep 4.0L 6.125" rods
Silvolite UEM-2229 +0.060" bore pistons
10.1:1 CR
CompCams #68-235-4 210/218 degree camshaft
Ported HO 1.91"/1.50" cylinder head
Mopar/Victor 0.043" head gasket
0.040" quench height
Ford 24lb/hr injectors with adjustable FPR or MAP adjuster for '87-'95 engines, Ford 24lb/hr injectors for '96-'04 engines, '99-'00 Chevy LS1 26.2lb/hr injectors for '05-'06 engines
270hp @ 5300rpm, 306lbft @ 4000rpm
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Old 11-15-2013, 04:58 PM   #9
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Quote:
Originally Posted by TJK8 View Post
I used the "Wilder" recipe listed below...it is a 4.2 crank in an overbored 4.0 block so its really about a 4.4L

Yes you can just used CL or Ebay for all the parts you need.

4.2L Milder mini-stroker

AMC 232 3.500" stroke crank
Jeep 4.0L 6.125" rods
Silvolite UEM-2229 +0.060" bore pistons
Increase piston dish volume to 15cc
9.6:1 CR
CompCams #68-231-4 206/214 degree camshaft
Ported HO 1.91"/1.50" cylinder head
Mopar/Victor 0.043" head gasket
0.040" quench height
Ford 24lb/hr injectors with adjustable FPR or MAP adjuster for '87-'95 engines, Ford 24lb/hr injectors for '96-'04 engines, '99-'00 Chevy LS1 26.2lb/hr injectors for '05-'06 engines
262hp @ 5200rpm, 302lbft @ 3750rpm

4.2L Wilder mini-stroker

AMC 232 3.500" stroke crank
Jeep 4.0L 6.125" rods
Silvolite UEM-2229 +0.060" bore pistons
10.1:1 CR
CompCams #68-235-4 210/218 degree camshaft
Ported HO 1.91"/1.50" cylinder head
Mopar/Victor 0.043" head gasket
0.040" quench height
Ford 24lb/hr injectors with adjustable FPR or MAP adjuster for '87-'95 engines, Ford 24lb/hr injectors for '96-'04 engines, '99-'00 Chevy LS1 26.2lb/hr injectors for '05-'06 engines
270hp @ 5300rpm, 306lbft @ 4000rpm
I may have to look at this. I am really trying to get as close to 300hp as possible with a semi aggressive cam.
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Old 01-24-2014, 08:59 PM   #10
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Dunno if this is still something you are looking into, but I just finished my stroker build and even with a mild cam and lowish compression it rips. If you are curious I would love to share more. Jeepstrokers.com is a great resource.

TJK8 if your engine used a 4.2 (258ci) crank it was at a minimum a 4.5, if it was bored like you said it would be a 4.6 or bigger depending on how big you went.
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Old 01-25-2014, 03:08 PM   #11
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Where can I find a complete kit to swap over my old 4cy into a V6 in my yj? I cannot find anywhere that has a complete kit.
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Old 01-25-2014, 03:34 PM   #12
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Well you have to make up your mind. Do you want a I6 stroker or a v6?
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4" rub/ex, 33" BFG A/T's, SYE, rear locker
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Old 01-25-2014, 03:47 PM   #13
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Which is better
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Old 01-25-2014, 03:59 PM   #14
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I thought you were the OP when you asked your first question.

Um?? They are different. I would never consider anything but a stroked 4.0 for a jeep unless I was going to go to a V8. 4.3 chevys are a popular swap, but the benefit there is usually size, making them great in toyotas and suzukis. V motors don't have the same bottom end stump pulling torque characteristics that I6's do, so that's the huge attraction to me with inlines.
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Old 01-25-2014, 04:31 PM   #15
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I just want to be able to run 35" and drive back roads and through the woods ( not mud). Kinda a family ride.
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Old 01-25-2014, 04:50 PM   #16
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Just regear to 4.88's and keep the 2.5.
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Old 04-12-2014, 12:33 PM   #17
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Gonna be a lot cheaper to regear rather than to repower...

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