3.4 swap into 1985 Jeep Cherokee questions?

[Canyonero]

Well, I guess if the stock Camaro one matches the depth... sure. It has the larger pickup tube.

[geoffinbc]

There is only 2 pickup depths. The 4X4 and 2WD. If the 2WD one measures the same as your stock one then use it.

[cardana24]

There is only 2 pickup depths. The 4X4 and 2WD. If the 2WD one measures the same as your stock one then use it.

I went with the stock camaro one. The one that you guys posted a part number for before hung down too low, so I am using the stock camaro one. I had it pressed in today.

Now I am just debating on which oil pan to use. They look very similar. There is a gap in the rear of the baffle in the 2.8 one where the camaro baffle does not have a gap in the rear, but they are the same shape and everything over the deep area. They look like the depth is the same in the deep part, the only difference I see is the little thing with the baffle and the slinder side is not quite as slinder on the camaro pan, but I think either one will clear my front axle especially since I have a 3" lift on my jeep. By running the camaro oil pan I am hoping that may open me up to the option of running camaro exhaust.

[geoffinbc]

Camaro oil pan will have no effect on exhaust at all. That you need to compare is the bottom of the pan. Put them side to side and compare the profile. In your application they may not need to be identical. But if you try and use a Camaro pan in an s-10 it will not work at all.

[cardana24]

Camaro oil pan will have no effect on exhaust at all. That you need to compare is the bottom of the pan. Put them side to side and compare the profile. In your application they may not need to be identical. But if you try and use a Camaro pan in an s-10 it will not work at all.

Well I have the camaro pan bolted up and I was getting ready to drop the engine back in the engine bay yesterday but the people that I ordered the clutch from sent me the wrong clutch so I will know more when I actually have a clutch that fits on the jeep (hopefully today).

As far as the profile its not the exact same. The deepest part is about the same depth and width it's about 8"s deep and I foget the width. As for the shallow part the jeep pan is about 3" deep and the camaro pan has a deepest point of about 5.5"s. I am hoping if I would have had a vertical clearance problem with the front axle my 3" lift will compensate for that....if not I will put the jeep pan on, since I am not hooking the y pipe up before the install the pan will be easy to swap out. The main reason I went with the camaro pan was because I had a rubber pan gasket to use and I only had a cork one for the 2.8.

[cardana24]

I have a problem. I went to put the engine in tonight and I don't thing the exhaust manifolds are going to work. One of them exits between the rear two exhaust ports, but on the 2.8 the exit to the y pipe is behind the furthest cylinder. Here is my problem. I don't want to use my current 2.8 exhaust manifolds because I have been using exhaust patch on them for about a year...they are done. Another problem that I have is that the left side 2.8 manifold has a big hole in it for the heater/stove pipe for the carb. On the right side they have all of the holes for the air system hook ups. So what should I do? I need manifolds/headers that have the same exit points as the 2.8 jeep manifolds but with out all of the holes for the air and heater tube. I'll be calling summit tomorrow to see if they have any ideas. Also I may be able to make them work if I can relocate one of the motor mounts...what is the name of that company that makes a bunch of different motor mounts for swaps, is it advanced adaptors or something like that? Thanks for any advice.

Oh also I am going to need to put the jeep oil pan back on, it looks like I am going to have clearance issues in the front in the track bar/ steering stablizer area.

[cardana24]

okay, I have hit a pretty big problem. I don't think the jeep oil pan will work because I am using the camaro front timing cover. The pan on that side is compleatly different. My plans for this swap are to run a camaro water pump and all the camaro acessories...so as I see it I need to make the camaro pan fit. I took some pics of the two side by side to show you guys what I am dealing with. The only things I have thought of are trying to "modify" the camaro pan enough with a hammer to fit, or have someone weld the top half of the camaro pan to the lower half of the jeep pan but I cannot weld and I am not sure of the cost of this or when I could get someone to do it. What are your thoughts? This is what is holding up forward progress right now.





If it is not obvious the camaro pan is the shinier of the two.

[cardana24]

I just got off the phone with a welder. I am giving him the oil pans tomorrow, so hopefully he can rig something up for me. I'll report back with pics when I find something out.

[Canyonero]

Welcome to swapping. Best of luck with that, and keep everything well documented.

In retrospect, the Trooper swap wasn't too hard. I just didn't know what I was doing. I'll write something up so the next guy has it easier.

[cardana24]

Okay I tried it again. This time I took the motor mount brackets off the engine, I took the motor mounts off of their mounting points, and I took off the right side mounting point for the motor mount...I had much better results this time I initally got the engine started going in the right direction by getting a few of the bell housing to engine bolts started. Once I got those started I got the rest of the top ones on. After that was done I put the motor mount brackets from the 2.8 back on the engine, a got one motor mount in place at a time. Once the mounts were in I took the cherry picker off of the engine and tried the camaro oil pan again...and the good news is that it is on and it looks like I have plenty of room. It's not very close to the axle/track bar/steering stabalizer (the pic that I took from the rear did not come out very well so you can not see the clearance so great, I will get another one the next time I work on it). So that is the good news along with the fact that I was able to keep the stock 3.4 exhaust manifolds on as well. I test fitted the Y pipe to the manifolds and it will just not fit in the area I have so I am going to have to have an exhaust shop make me a Y pipe. Anyway here are a few pics, I am getting ready to start the fun part of figuring out my fuel system, and wiring the engine Feel free to comment.
Clean bell housing with new TO bearing.


Full 3.4 w/o acessories in Jeep


Crummy clearance picture.

[cardana24]

I have changed my mind again on the fuel set up. I just ordered a in tank fuel pump and sending unit from an 88 4.0 jeep. It will be in tomorrow.

Another member that is doing the same swap in his jeep is telling me that the fuel pressure should not go over 60 psi or it will damage the rail. Does any one have any experience with this?

[Canyonero]

Weren't you getting the oil pan modified? Did you change your mind?

I ended up with 45 PSI fuel pressure at the test port on mine. I don't know what the limits are, but yeah 60 PSI sounds overkill. Did you need to run a return line or did your rig already have one?

[cardana24]

Weren't you getting the oil pan modified? Did you change your mind?

I ended up with 45 PSI fuel pressure at the test port on mine. I don't know what the limits are, but yeah 60 PSI sounds overkill. Did you need to run a return line or did your rig already have one?

If you check my most recent post with pics the camaro pan is actually going to work for me along with the camaro exhaust manifolds.

As for fuel pressure that's about what I am looking for around 50 ish. As for return line I am not positive but I think I already have one. I have two lines coming out to rigid lines from the fuel tank and they are the same size as the camaro lines off of the fuel rail so I am guessin I already have a return line. But I do have a question as to which is which. I assume the larger of the lines on the 3.4 is the line where the fuel should be coming from the pump and the smaller line is for the return? If you could take a look and let me know I would really appreciate it. I picked up fuel line and clamps last night along with an inline fuel filter.

[Canyonero]

Yeah, that's right, I think it's 3/8" feed and 1/4" return. Sounds like that's gonna work for you.

[cardana24]

Yeah, that's right, I think it's 3/8" feed and 1/4" return. Sounds like that's gonna work for you.

Cool I'll set that up soon.