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Old 05-31-2011, 01:04 AM
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V8 conversion?

I want to look.into getting an 8. But what do I need to know. Is there a certai. Engine I want? That I should take above all.others if I could find it?

What all is.compatible?

Im a hobby mechanic, but I could never install an entire engine I think.. or could I? Lol

What would I reasonably expect to pay for the conversion and an install?

Thanks guys <3

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Old 05-31-2011, 01:24 AM   #2
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I know alot of states have emission laws witch include when doing a engine swap that the engine going into the vehlicle must be of the same year or newer

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Old 05-31-2011, 01:38 AM   #3
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Quote:
Originally Posted by Reaperonin View Post
I want to look.into getting an 8. But what do I need to know. Is there a certai. Engine I want? That I should take above all.others if I could find it?

What all is.compatible?

Im a hobby mechanic, but I could never install an entire engine I think.. or could I? Lol

What would I reasonably expect to pay for the conversion and an install?

Thanks guys <3
I started a thread about V-8's because I DO have one. BUT I bought it that way. However there are some good points about different V8's plus some pics of the conversions. Hope it helps.
https://www.wranglerforum.com/f118/v-...-em-88819.html
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Old 05-31-2011, 05:29 PM
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Your choice of caps is.confusing and makes me feel like I did something wrong.. lol


And I can't check the link on my phone. Thanks though, I will look later<3
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Old 05-31-2011, 06:58 PM   #5
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What Jeep do you have?
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Old 05-31-2011, 06:59 PM   #6
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Your choice of caps is.confusing and makes me feel like I did something wrong.. lol


And I can't check the link on my phone. Thanks though, I will look later<3
lol Sorry, wasn't meaning to. I was trying to express that I have a V8 in mine, but emphisise that I bought it like that, so I am not sure about what is better, and how hard they are to install. And the one guy is right, some D.E.Q. laws make it hard to do the mod, however I live outside of a D.E.Q. zone.
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Old 05-31-2011, 07:07 PM   #7
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What Heep do you have?
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Old 05-31-2011, 07:17 PM   #8
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What Heep do you have?
Me? I have an 89 YJ with an 86 Chevy 350 Short block.
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Old 05-31-2011, 08:20 PM   #9
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Nononononononononononono, Reaperonin.
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Old 05-31-2011, 09:10 PM   #10
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why do you feel the need for a v8.
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Old 05-31-2011, 09:31 PM   #11
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Who doesn't feel the need? Women?
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Old 05-31-2011, 09:41 PM   #12
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I feel the need for a v8 every time im approaching a hill! I had a chance to buy a 93 yj a few years ago for 5k. It had a Chevy 350 in it. I passed on the yj and got a 73 CJ with a 304. I passed on the yj because it was an auto tranny, and it had suspension issues.
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Old 05-31-2011, 10:25 PM   #13
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That just ment it was ready for a bigger lift.
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Old 05-31-2011, 10:34 PM   #14
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im with hemi yj i feel the need for a v8. if i could i would have a blown 460 in my yj its just not in the budget. i have a 258 and it does great but you can never have too much power.
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Old 05-31-2011, 11:11 PM
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I have a 94 yj with the 6 now. And how could I Not consider more power! Lol.


I know you weren't trying to be rude, lol. It was just confusing caps placement lol.

Really though, she's approaching 200k, and although I take good care of her and can proba ky get another 100k out of her, at some point I want to give her an engine that illicts drools of envy.
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Old 05-31-2011, 11:47 PM   #16
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What's the fuel pressure on a 4.0L? Anyone know?
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Old 06-01-2011, 12:17 AM
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Before or after the regulator? Lol

My xj has the same engine. I think it was 30ish from pump and nearly 80 after regulator I think? It's been years though :-/ lol
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Old 06-01-2011, 02:51 AM   #18
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Quote:
Originally Posted by FirefighterRobT
Me? I have an 89 YJ with an 86 Chevy 350 Short block.
Short block is having no heads, bet you get good gas mileage with that lol
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Old 06-01-2011, 07:55 AM   #19
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If those are the right numbers it would be the reversed. 80psi at the pump and 30psi at regulator. Most V8's run at 45psi and some like the Hemi run 60psi. I'm talking fuel injection. I know you can run a Hemi on a 45psi system but the higher you get in the rpms the more you starve the engine. Not sure about 30psi though. Still may work fine for everyday driving. Not sure if a Jeep regulator can be removed to run a bigger one or not. If you are looking at running a carb you can just throw an aftermarket regulator on in the engine bay. Carbs only run a couple pounds of pressure. Low single digits.
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Old 06-01-2011, 08:08 AM   #20
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When I dropped a Hemi in my 4.7L Dakota, it runs at 45psi. I had bought an '06 Hemi Ram to source parts from. I did a few minor mods to shorten the height of the Ram fuel pump any swayed it in. It plugged right into the existing fuel line. When I got the engine in where the existing line plugged into the fuel rail it too plugged right into the Hemi fuel rail. Maybe you'll get that lucky.
My Jeep was a different story. It was carbed originally. So the list was bigger to convert to fuel injection. I put in a fuel cell, remote mounted fuel pump, regulator, new rails, pre-pump filter, pre-rail filter, -8 fuel and return lines and AN fittings. It's more like something you'd find on a Trophy truck. You could do it more cheaply though. I got a bit carried away. But its cool.
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Old 06-01-2011, 08:15 AM   #21
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Now that covers the fuel system. If you can change breaks you can do an engine swap. Not really any harder just a lot more pieces. Make a list and keep it updated of all the things you need to do. There's just a lot to remember.
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Old 06-01-2011, 08:17 AM   #22
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Well I have the power train out of a 98 jeep grand Cherokee. So I have a efi 5.2l with an auto. I deff recommend the efi. No mater what motor u decide on ford, chevy, or dodge. I would deff go for the fuel injection (efi).
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Old 06-01-2011, 08:43 AM   #23
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I know if you run a Chevy or Ford you are going to need to run their trans and transfercase. Then you'll need new driveshafts right away. So you might as well get new axles, tires and rims then.
But if you get Dodge stuff it will help buy you time. I going to deal with what I know. A haven't swapped a 350 so I can't say what extra that might entail. I did put a Hemi in my YJ however.
Putting in a Hemi means you can bolt up you 231 to it. I also run an automatic. I took measurements of my stuck transfercase location, bolted the engine, trans and transfercase together. Then dropped it all in. I used the measurements I took to get the transfercase back in its location set the engine angle and started making motor mounts. Once the motor was bolted in then I made a transfercase crossmember. On it I used a set of JBA shorty headers for a Charger. Their 1 3/4" primaries and a 3" collector.
Now doing it this way means that you can bolt the factory drivetrain back up. Driveshafts are in the right spot and you can use the factory axles. You can also put the stock 4x4 shifted back on. Now this is a stop gap. To save upfront money and time. But you can start driving on these components along as you DON'T open her up. Then get things together to upgrade other the items.
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Old 06-01-2011, 08:46 AM   #24
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I also run a Hurst floor shifter for a 727. Works perfect. But any 727 style shifter should do.
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Old 06-01-2011, 08:52 AM   #25
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They make adapters for any engine in front of a ax15 or TF999/904
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Old 06-01-2011, 09:08 AM   #26
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There are people that can make a harness but not me. I called http://www.hotwireauto.com/ and had them send their Hotrod harness. Not cheap but it is plug and play for the most part. Just hook up an ignition switch, ground, battery and you're up and running. It comes pre-wired for gauges but you don't need them to fire it up.
You do need to put a break switch in. And you need to get the gas peddle from a Hemi vehicle. Hemis are drive by wire. There's a plug on the harness that plugs into the gas peddle. There's no throttle cable to route. Also you need an ECM without a security lock. Chris at Hotwire auto can tell you which one for your application. He can also reprogram it for you and even put your VIN in it so if you go to get emissions ran or something it will show that as a factory setup.
You don't need a body lift to do this swap but there was one on my jeep when I bought it so I left it there and used the extra engine bay height to install a monster radiator. And I run a duel electric pulled fan setup.
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Old 06-01-2011, 09:16 AM   #27
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You just can't bolt a standard trans to an auto Hemi. You need atleast a different ECM. One for a stick. It's hard to find one at a salvage yard and their $1000.00 to $2000.00 new plus all the extra parts for clutch and all. And I want to say a different harness. But not 100% on that. Unless you can get an entire Ram that's a stick and swap all of it, it just gets real expensive real fast. Plus the Ram autos are a double overdrive and pretty damn strong.
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Old 06-01-2011, 09:59 AM   #28
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Sounds aweful spendy to me just to use a weak 231 case and driveline.

my 02 cents
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Old 06-01-2011, 11:18 AM   #29
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Stock 231 has the same size main shaft as a 241 which is what comes factory behind the Hemi in a Ram. Let alone if you have already beefed one up. Plus I said this let's you keep driving and wheeling till you can get the cash for all the other pieces instead of all at once. Not a final solution.
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Old 06-01-2011, 12:35 PM   #30
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Also this is a V8 swap thread not an axle thread.

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