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Unread 10-20-2013, 11:46 AM   #1
Bitty
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Suggestions on engine and drive train swap out

So I have a 1968 Gladiator with a 327 AMC engine. I have decided to swap it out with a newer engine and that is going to require swapping out the transmission and possibly the gear ratio in the front and rear axles.

I am new to the whole 4x4 world and I need some suggestions from some people that know there way around.

What I am wanting to do is make my Jeep truck more if a daily driver but still have the capability to off road when I want. I'm not looking to off road anything extreme. I want a nice truck with a powerful engine and still quite a bit of torque. I will be putting a 4 inch lift on it and adding bigger tires.

Your input on engine, transmission and gear ratios that will compliment each other for what I am looking for would be greatly appreciated. Thanks

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Unread 10-20-2013, 11:56 AM   #2
Bitty
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Quote:
Originally Posted by Bitty View Post
So I have a 1968 Gladiator with a 327 AMC engine. I have decided to swap it out with a newer engine and that is going to require swapping out the transmission and possibly the gear ratio in the front and rear axles.

I am new to the whole 4x4 world and I need some suggestions from some people that know there way around.

What I am wanting to do is make my Jeep truck more if a daily driver but still have the capability to off road when I want. I'm not looking to off road anything extreme. I want a nice truck with a powerful engine and still quite a bit of torque. I will be putting a 4 inch lift on it and adding bigger tires.

Your input on engine, transmission and gear ratios that will compliment each other for what I am looking for would be greatly appreciated. Thanks
I forgot to mention that I am wanting to swap my current engine out with a 6.0 liter full injected engine.
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Unread 10-20-2013, 12:08 PM   #3
jimbos76cj
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Im looking to do a chevy lq4 swap from a 2500 HD into a waggy. the 6.0 & 4l80E will be a good combo. With that being said I also have a 2500 HD thats my daily driver to use a donor vehicle. I will also be swapping over the Hydro boost brakes into it. Google LS wagonner swap and you can find quite a few threads on swaps. I get about 15mpg out of my 6.0 with 230k on the odometer and a few problems that need to be adressed a waggy weghs about 2000 lbs less the the truck so that is a instant increase in MPG. If you go ahead with it have the comp reprogrammed to remove the torque management and youll get even more of an increase in MPG.

A 5.3 or 5.7 is also a mighty good motor to swap into a waggy.
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Unread 10-20-2013, 01:25 PM   #4
Bitty
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Originally Posted by jimbos76cj View Post
Im looking to do a chevy lq4 swap from a 2500 HD into a waggy. the 6.0 & 4l80E will be a good combo. With that being said I also have a 2500 HD thats my daily driver to use a donor vehicle. I will also be swapping over the Hydro boost brakes into it. Google LS wagonner swap and you can find quite a few threads on swaps. I get about 15mpg out of my 6.0 with 230k on the odometer and a few problems that need to be adressed a waggy weghs about 2000 lbs less the the truck so that is a instant increase in MPG. If you go ahead with it have the comp reprogrammed to remove the torque management and youll get even more of an increase in MPG.

A 5.3 or 5.7 is also a mighty good motor to swap into a waggy.
Thanks. One question. Will I need to change the gear ratios in the axles?
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Unread 10-20-2013, 02:59 PM   #5
jimbos76cj
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That really depends on the tire size and gear ratio you have now. The good news is if you go with the over drive trans you can run a deeper gear. You need to figure out what your plan is for tire size. A 33" tire on 4:10 gears with over drive should give the best of both worlds.
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Unread 10-20-2013, 03:10 PM   #6
jimbos76cj
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I just looked at a gear chart. with a 33" tire in 3rd gear (1:1) doing 60 you will be turning 2720 RPMS. IF you have a over drive of say .75:1 like the 4l80E then your rpms will frop from 2720 to 2000 rpms. I think thats about the same range as my 2500 is in.
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Unread 10-20-2013, 06:54 PM   #7
Bitty
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Quote:
Originally Posted by jimbos76cj View Post
I just looked at a gear chart. with a 33" tire in 3rd gear (1:1) doing 60 you will be turning 2720 RPMS. IF you have a over drive of say .75:1 like the 4l80E then your rpms will frop from 2720 to 2000 rpms. I think thats about the same range as my 2500 is in.
Sounds good. I will start looking into my engine and tranny, find out what gear ratio I am running now and go from there. I will start a new thread when I begin work. Thanks.
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Unread 10-20-2013, 08:01 PM   #8
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So you have your mind made up on a certain displacement, but have no idea what make that engine is going to be?

I'm just curious how you can come to the conclusion that it will be a 6.0.

Gear ratio has more to do with tire size than engine/transmission.
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Unread 10-21-2013, 09:37 AM   #9
Bitty
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So you have your mind made up on a certain displacement, but have no idea what make that engine is going to be?

I'm just curious how you can come to the conclusion that it will be a 6.0.

Gear ratio has more to do with tire size than engine/transmission.
No that's just the size of the engine I would like to put in. 5.3 or 5.7 would be OK. I will be going up in size of tire as well. I also want to drive this truck daily if need be.
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Unread 10-21-2013, 10:07 AM   #10
jimbos76cj
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The 5.3 and 5.7 would be fine in a 4000 lbs waggy.. Most of the trucks they come I a re well over 5000 lbs. no mater which motor you go to if look for a 4l80e for the trans. They are a heavier duty trans.

If I didn't have the 2500 to use as a donor I'd be looking for a 5.7.
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Unread 10-22-2013, 12:35 AM   #11
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6.0 is thirsty like a 401 with Holley 4 bl.
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Unread 10-22-2013, 09:52 AM   #12
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I have a friend with a 6.0 Chevy in his YJ on 40" tires. It's a daily driver and he gets in the mid-20s for MPG if he keeps his foot out of the throttle, which is the key.
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Unread 10-22-2013, 10:05 AM   #13
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My 6.0 LS2 in the Vette is great on the highway gets around 28.8 cruising between 75-110. Over 110 it will dip into the low 20's so i figure that is where the Wagon would live based on wind resistance and the Wagon weighing in around 800 lbs more than a Vette. City is 17.5 with the occasional 1/2 throttle zip/zoom that it begs you to do.

I am installing a built 401 into the wagon. With perfect tuning, it might get 12-14 with the 727 but hoping I can find the high teens with an Overdrive. 17-19 hwy would be livable.
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Unread 10-25-2013, 04:35 AM   #14
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