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Unread 02-27-2008, 09:48 PM   #1
gdepley
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at the cross roads

hello to all. i,ve been on the forum off and on for about a year and now at a critical point in the rebuild. i'll try to get some pics when i can figure out how to make my camera talk to the computer! i started on my 80 cj5 about 1 year and then some *******(i think it was me) burned down my garage. all is well and now working out of a new pole barn. i have the tub off and right side cut off and replacing but also working on frame with new 4"lift. ipulled the 4 cyl with repaired cracked block and now looking for options for new engine and tranny(has sr4). all options and opinions would be appreciated.

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Unread 02-27-2008, 09:56 PM   #2
high51977
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If it were mine, I'd find a early 90's chev s10/gmc s15 with the tbi four cylinder (same motor you have but new config) and swap it in. my s10 will sit for weeks at a time and start right up when I need her. strong reliable engine no major modifications (wiring, but if you get the whole truck you have all you need) and decent fuel mileage. back it up with a t18 and you have one heck of a workhorse
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Unread 02-27-2008, 10:07 PM   #3
gdepley
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Thanks for that suggestion,but i should have mentioned that iam really looking to put in a sbc 350and new tranny
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Unread 02-27-2008, 10:26 PM   #4
Trapshooter
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Why not find a AMC 360 or 304 if you want a V8? They are out there and depending on the Trans case and Tranny you have may bolt up. I am not sure what came in a '80 CJ 5 with the 4 cyl.

My '79 has a 304 with a T-150 and a Dana 20 Trans case.

While a SB 350 is a popular conversion there is a ton of work to make it work.

Where is Evansville?
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Unread 02-28-2008, 06:02 AM   #5
gdepley
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I have thought about the 360 option but from what i hear the sr4 tranny i have won't hold up. I definitely want a v8 and looking for a good v8 and tranny swap. Evansville is in southwestern IN.
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Unread 02-28-2008, 07:08 AM   #6
BESRK
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That 80 four popper should be the GM Iron Duke. It's bellhousing already has a Small Block Chevy Pattern. If I were looking for a V8, I'd probably go Chevy. I'd also look into picking up at least a T176 tranny at the same time.
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Unread 02-28-2008, 07:15 AM   #7
Bard
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The problem with the SR4 is it is weak and you are going to have to ditch the tranny anyways unless you want to pay for a new input shaft with the correct spline count, it will only work with 4 cyls and I doubt it will hold up to a V-8 for very long.

Do you want a manual or automatic tranny behind the 350?

As for a 350, you can make it work, run a GM manual tranny and tcase or adaptors and the Dana. It all comes down to budget and availability of parts.

Advanced and Novak make good adaptors but are pricey to interchange the AMC and GM tranny / tcases.
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Unread 02-28-2008, 07:35 AM   #8
HackFabrication
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Small Block Ford. 302/5.0L or 351W/5.8L

Manual transmissions:
T176
T19
T18
NP435

Automatic transmissions:
C4
C6
AOD

IMO, I think a really good dual purpose CJ would be an EFI 5.0L HO/AOD/Dana300 (with LoMax 4:1) or Atlas/STaK Tcase. But I'm a bit bias:


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Unread 02-28-2008, 10:40 AM   #9
GeauxJeep
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I love those tires man.
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Unread 02-28-2008, 10:43 AM   #10
HackFabrication
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TSL/SX 32X11.50X15 mounted on 15x8 rims. In the pic, they have '0' psi air in them.
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Unread 02-28-2008, 11:40 AM   #11
GeauxJeep
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what did that set you back per tire/wheel? ballpark figure?
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Unread 02-28-2008, 11:50 AM   #12
HackFabrication
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$935.00 March, 1999 (I've been working on this since December 1996).

4 Wheel Parts Warehouse. That for 4 tires/wheels, centers, lug nuts, mounted, balance, shipped to Michigan. And a whole bunch of anxiety dealing with their customer service people because they sent me the wrong lug nuts.
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Unread 02-28-2008, 08:22 PM   #13
gdepley
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I am kind of a chevy man but would there be any advantages to going ford as far as a 302 or 351 and ford tranny bolting to the dana 300. the sr4 is already a ford so would i still need an adapter.
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Unread 02-28-2008, 08:47 PM   #14
HackFabrication
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The SBF is lighter, the distributor is in the front, the aftermarket has loads of support for the 5.0L (and 5.8L). The EEC-IV EFI is one of the simplist systems out there for SEFI. And super easy to swap. The old adage about Chevy's being 'cheaper' to build than Ford's, went out the window with the 5.0 Mustang GT's. In my 'hood, I can buy SBF's all day long for a fraction of the cost of a SBC. And in most cases the SBF is complete and in running condition. Just about all of the 350 Chevy's I've seen are in need of major overhauls, have parts missing, have been built into race engines, or are just unreasonably priced. The day of the complete/running $150 SBC (350) is long gone. At least where I live. You're better off buying the whole vehicle, pulling the motor, and parting/scrapping out the rest.

The SR4 (or T4), transmission is light duty. I wouldn't waste any money trying to use it behind a V8. Get a T176/Dana 300 combo which was OEM in CJ's 80+. The only issue you will have is the need to use a conversion pilot bearing and a different clutch disc, as Ford uses a 1 1/16" 10 spline input, while Jeep used a 1 1/8" 10 spline input. No big deal.

If I could've fit an AOD in my CJ5, I'd of went that route.
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Unread 03-08-2008, 08:12 AM   #15
gdepley
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I just found an early70's ford truck with a 351 and c4 tranny. Just wandering if the c4 is too long to fit in a cj5 without too many mods. The truck is my father in law's so it would come at a good price(FREE). But is it worth the hassle.
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