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-   -   302 swap options. (http://www.wranglerforum.com/f282/302-swap-options-208915.html)

McSaK 01-01-2013 11:43 PM

302 swap options.
 
Hey forum, you've helped me out so much before so hopefully I can get some good info. Later this year I'm hoping to swap out my 2.5 for a 302 and I have some questions. Would an ax15 do fine with the 302? I was looking at buying a totaled mid 90's explorer with a 302 and and swapping out the motor and the axles. Oh would the coil springs be ok with the extra weight? I'm not a gearhead.....yet and these questions have been brought up. Of course the motor and tranny would be taken apart and checked. As far as the motor goes how much should I replace? I was thinking gaskets crank shaft and pistons but any input would be greatly appreciated. I want to have everything I need before I start the swap to get it done as smoothly as possible. Anything else you can think of that I haven't, please post your thoughts. Thanks guys!

DeepSouthJeeper 01-01-2013 11:45 PM

The 5 speed for the 2.5 can't even handle the 4.0, so no, you'll need a new trans. Might as well put a new rear end on as well, because the D35 can snap with 31's even with a 4 cyl. Forget it with the 302. But it sounds like it will be a nice jeep if you do it.

McSaK 01-02-2013 12:11 AM

Quote:

Originally Posted by DeepSouthJeeper (Post 3171204)
The 5 speed for the 2.5 can't even handle the 4.0, so no, you'll need a new trans. Might as well put a new rear end on as well, because the D35 can snap with 31's even with a 4 cyl. Forget it with the 302. But it sounds like it will be a nice jeep if you do it.

Yea I figured as much. I know I'm not keeping the 35/30 setup I have now. That's one of the reasons I wanted to get a whole junk vehicle because those explorers come with a rear 8.8, don't know about the front end though. Another question, people are saying to go carb'd but I don't wanna worry about " slosh" cuz I love trail riding and climbing. I was told to just stick with fuel injected.

DeepSouthJeeper 01-02-2013 01:14 AM

Quote:

Originally Posted by McSaK

Yea I figured as much. I know I'm not keeping the 35/30 setup I have now. That's one of the reasons I wanted to get a whole junk vehicle because those explorers come with a rear 8.8, don't know about the front end though. Another question, people are saying to go carb'd but I don't wanna worry about " slosh" cuz I love trail riding and climbing. I was told to just stick with fuel injected.

The D30 is actually a really good axel, or so I've heard. Not sure if it can take a 302 though.

Raiderfan001 01-02-2013 01:24 AM

Quote:

Originally Posted by McSaK (Post 3171282)
Another question, people are saying to go carb'd but I don't wanna worry about " slosh" cuz I love trail riding and climbing. I was told to just stick with fuel injected.

There is no reason to go carb that I know of if you already have/will have fuel injected on the 302. The FI won't choke on uneven terrain and will get better MPG. If it wasn't so expensive i'd swap my 74 Chevy with a 350 to FI...

Lando25 01-02-2013 01:28 AM

Guys run Dana 30s with 5.9 magnums so I would think it could handle a 302.

McSaK 01-02-2013 06:55 AM

Quote:

Originally Posted by Lando25 (Post 3171457)
Guys run Dana 30s with 5.9 magnums so I would think it could handle a 302.

After my swap I fully intend on putting on bigger tires....in the 35 in range, so I should still swap out my front 30 huh?

McSaK 01-02-2013 06:58 AM

Quote:

Originally Posted by Raiderfan001 (Post 3171452)
There is no reason to go carb that I know of if you already have/will have fuel injected on the 302. The FI won't choke on uneven terrain and will get better MPG. If it wasn't so expensive i'd swap my 74 Chevy with a 350 to FI...

Thanks! That's what I was leaning towards. The guys that are going to help me have a shop, and are really knowledgeable. They are ford and dodge guys though, I wanted another opinion by a jeep owner who knows more about it then I do.

McSaK 01-02-2013 07:00 AM

So would the ax15 with an adapter plate be fine for the 302? Still not too sure on the transmission.

Gunner 01-02-2013 12:54 PM

If your a good driver and don't beat your stuff then the AX15 should handle your 302 just fine. Novak has a bit of a write up on the AX15 and says its cool behind 350's.

Dextreme 01-02-2013 01:12 PM

So to be clear, since you have a 2.5L now...you are planning to purchase the AX15 correct? (The AX5 came in 2.5L)

McSaK 01-02-2013 03:48 PM

Quote:

Originally Posted by Dextreme (Post 3172743)
So to be clear, since you have a 2.5L now...you are planning to purchase the AX15 correct? (The AX5 came in 2.5L)

Yes, I plan on purchasing an ax15 lol. What all am I going to have to do with the transfer case? I heard re gear it or get another one.

Dextreme 01-02-2013 03:58 PM

This is probably worth reading if you haven't already:
The Ford Windsor V8 Engines - Novak Conversions

McSaK 01-14-2013 05:39 AM

Ok, so I think im going to swap in a 302 and get an ax 15 with an adapter for the motor. With a transfer case should I stick with a five speed? It was brought up in conversation and someone mentioned a 4 speed, any advice? Also switching in an 8.8 in the rear and a dana 44 front. Will I expect any issues installing a 4 inch long arm? Hopefully I'll find these answers, but im still searching. Thanks for the help!

00tj2 01-14-2013 07:47 AM

Quote:

Originally Posted by McSaK (Post 3226124)
Ok, so I think im going to swap in a 302 and get an ax 15 with an adapter for the motor. With a transfer case should I stick with a five speed? It was brought up in conversation and someone mentioned a 4 speed, any advice? Also switching in an 8.8 in the rear and a dana 44 front. Will I expect any issues installing a 4 inch long arm? Hopefully I'll find these answers, but im still searching. Thanks for the help!

I think you might be a little confused on what and how a transfer case is or works, unless that was a major typo. I can see the typo happen when you have all the thoughts of your project going on upstairs. The stock transfer case is strong enough to handle the 302 and only has a high (1 to 1) or low (2.72 to 1) As for the transmission, I would steer you towards the nv3550 or forget the 5spd all together and go with the stock auto from the donor vehicle.

McSaK 01-14-2013 02:16 PM

Quote:

Originally Posted by 00tj2 (Post 3226270)
I think you might be a little confused on what and how a transfer case is or works, unless that was a major typo. I can see the typo happen when you have all the thoughts of your project going on upstairs. The stock transfer case is strong enough to handle the 302 and only has a high (1 to 1) or low (2.72 to 1) As for the transmission, I would steer you towards the nv3550 or forget the 5spd all together and go with the stock auto from the donor vehicle.

No, I am. I don't have too much experience with vehicles, I'm swapping my engine with the help of my friends, the whole process is going to be a learning experience for me. So, what are the benefits of having an auto? I don't know man, one of the things that makes my jeep so fun to drive is because it's a stick, I've been through 7 vehicles, none of which have been automatic. I've still got a few months before it all starts happening.

McSaK 02-12-2013 07:44 PM

To add to all of this, my donor vehicle is going to be a late 80's model mustang. I also intend a new lift, as of right now i have a 2.5 BL, would anyone suggest another 4 inch on top of that? or should i keep it lower and go for a 3? My spending cap is going to be around 7000. think i can do the swap properly with an 8.8 rear and a 44 front with new 35x12.50 tires and a lift? SYE is in there too, ive got a list here somewhere with everything im going to need. I wanted a long arm lift but they are so expensive, any thoughts? this will all start in June when my buddy gets back from deployment. Im definitely going to create a new thread and post pictures of where its at and what not. im hoping to have the swap done in three weeks.

McSaK 02-12-2013 07:45 PM

Also, anyone know what kind of HP i will be looking at? was thinking of boring out the 302 .30 and adding cams and what not

neverfastenough1 02-12-2013 09:09 PM

If you keep the fuel injection, a few things to consider would be that in 87 the 302 started getting forged pistons and E7 truck heads. In 89 it went from Speed Density to MAF. In 93 it lost the forged pistons for hypereutectic pistons. If I were picking a Mustang 302 and keeping the fuel injection, I would get a 89-92. Stock I think the later ones are rated at 225 at the crank. I have seen 306's put out 300+ hp and if you take it to a 330 or a 347, I have seen 400-450. Keep in mind the block is only good to around 450-500 before it splits down the middle unless you have a Mexican block or a aftermarket block like a Boss.

sduncan 02-12-2013 10:07 PM

I notice that you live in Cali....is this going to be a trail only rig? If not then you won't be remotely close to being smog legal.

But here's a link to some parts anyway....
ford 302 small block to an ax15 adapter set up - Pirate4x4.Com : 4x4 and Off-Road Forum

00tj2 02-13-2013 03:30 AM

Ok so for the 5.0, if it is an 89-91 I would not bore it out!!!! I made that mistake with mine and threw out a perfectly good and superior set of forged pistons. Do your research when it comes to those year 5.0's and what to do and not to do to them. I would think a good low end cam, 3 angle valve job and maybe even stroking it with the stock bore should give you more than enough HP for the jeep.

Now hearing that you are getting everything from a mustang I change my mind and will tell you to stay away from the AOD. It's crap. The reason I mentioned to go auto was 1) I've been driving stick for 14 years and it gets old. 2) most every off road situation favors an auto, not that you can't do it with a 5spd because I do every time.

00tj2 02-13-2013 03:37 AM

As for you lift, you already have a 2.5" body lift? Or a budget boost? Most here will say not to do any body lift over 1-1 1/2" for whatever reasons but if you already have it on I say keep it for now. You don't have to go that high to run 35's, you can trim fenders, get different flares to help with rubbing issues and wheel spacers to help keep them off the spring perches and control arms but that's said to be the cheap way out. I recommend looking through Impeads ,Jerry brandfords and ljunlimited's threads and seewhat you can get from that.

McSaK 02-16-2013 01:58 AM

Quote:

Originally Posted by sduncan (Post 3360558)
I notice that you live in Cali....is this going to be a trail only rig? If not then you won't be remotely close to being smog legal.

But here's a link to some parts anyway....
ford 302 small block to an ax15 adapter set up - Pirate4x4.Com : 4x4 and Off-Road Forum

Lol thanks for the link. I was Airforce, and my wife still is. Both of our vehicles are registered in Wisconsin so the whole "smog" bs doesn't apply to us. It's going to be a road vehicle but I do a moderate amount of offloading and crawling.

McSaK 02-16-2013 02:08 AM

Quote:

Originally Posted by 00tj2 (Post 3361740)
As for you lift, you already have a 2.5" body lift? Or a budget boost? Most here will say not to do any body lift over 1-1 1/2" for whatever reasons but if you already have it on I say keep it for now. You don't have to go that high to run 35's, you can trim fenders, get different flares to help with rubbing issues and wheel spacers to help keep them off the spring perches and control arms but that's said to be the cheap way out. I recommend looking through Impeads ,Jerry brandfords and ljunlimited's threads and seewhat you can get from that.

P/O said body lift. I'm not an experienced auto mechanic so I cannot confirm. I don't really want to be cheap, I've heard horror stories about the "cheap way out" and I'm not taking it to a shop, so I don't have to worry about labor fees and what not, just got to keep the beer stocked in my buddy's shop and my friends and I are doing it. I really want a long arm too because I love to crawl. So I guess my question is now should I take the body lift off? I am fully prepared to comfortably spend around 7 grand on my swap, lift, and new tires. So yea, I want quality on my rig.

McSaK 02-16-2013 02:15 AM

Quote:

Originally Posted by neverfastenough1 (Post 3360055)
If you keep the fuel injection, a few things to consider would be that in 87 the 302 started getting forged pistons and E7 truck heads. In 89 it went from Speed Density to MAF. In 93 it lost the forged pistons for hypereutectic pistons. If I were picking a Mustang 302 and keeping the fuel injection, I would get a 89-92. Stock I think the later ones are rated at 225 at the crank. I have seen 306's put out 300+ hp and if you take it to a 330 or a 347, I have seen 400-450. Keep in mind the block is only good to around 450-500 before it splits down the middle unless you have a Mexican block or a aftermarket block like a Boss.

I plan on keeping the fuel injection, Putting anything carbed on a wrangler seems ridiculous, no offense to anyone who's done it, I just do a good amount of wheelin. Originally I thought about swapping in an I6, but if I'm spending the money, why not go with a V8? I'm not into putting my foot to the floor or getting an insane amount of HP, I just want the ability to cruise, and easily keep up with the flow of traffic. So stock v8 is fine to me. Thanks for the info though! I'll def keep you guys in the loop and put up plenty of pics with the build.

McSaK 02-16-2013 02:19 AM

Quote:

Originally Posted by 00tj2 (Post 3361721)
Ok so for the 5.0, if it is an 89-91 I would not bore it out!!!! I made that mistake with mine and threw out a perfectly good and superior set of forged pistons. Do your research when it comes to those year 5.0's and what to do and not to do to them. I would think a good low end cam, 3 angle valve job and maybe even stroking it with the stock bore should give you more than enough HP for the jeep.

Now hearing that you are getting everything from a mustang I change my mind and will tell you to stay away from the AOD. It's crap. The reason I mentioned to go auto was 1) I've been driving stick for 14 years and it gets old. 2) most every off road situation favors an auto, not that you can't do it with a 5spd because I do every time.

I'm only 24 but have been driving stick since I was 15, in fact I didn't drive my first automatic until I was 20, it was our work truck when I was stationed in Italy. I do have an automatic vehicle so I would prefer to keep my jeep stick, I love it too much. Thanks for the info on the 302, you probably just saved me from a bad experience. Yea, bone stock is plenty for me but i have the cash to beef it up a little, so why not right?

00tj2 02-16-2013 03:23 AM

Well if your dead set on stick which I totally understand I would say try to pick up a nv3550. It has some noise issues but it is a stout transmission and is rated for a good amount of power. As for everything else I should prob wait till I'm not as buzzed as I am now to respond. Have a good night.

McSaK 02-16-2013 06:36 AM

Quote:

Originally Posted by 00tj2 (Post 3375454)
Well if your dead set on stick which I totally understand I would say try to pick up a nv3550. It has some noise issues but it is a stout transmission and is rated for a good amount of power. As for everything else I should prob wait till I'm not as buzzed as I am now to respond. Have a good night.

Yea, getting a transmission is part of it, so you would choose that over an ax15? Haha enjoy your Friday night guy!


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