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Old 08-03-2009, 06:24 PM   #1 (permalink)
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Default '73 Scout Engine Swap Suggestions

Ok my fellow IHers. I just bought my first Scout. 1973 Scout with 6 cylinder. It is currently running and debating about what to do with engine.

I want a daily driver that is a head turner. I MIGHT do some very EASY offroading, but not much at all.

What are you suggestions? 350? And once I decide on engine conversion...easiest place to go for adapt. I'm going to do a frame-off build so open to ideas.

Your Scout Newbie - pjmiller
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Old 08-03-2009, 06:47 PM   #2 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

If ur going a 350 might as well go with a th350 or th 400 this way no adapters are needed
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1972 international 1210 pu
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Old 08-03-2009, 07:47 PM   #3 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

would going with 350 make most sense as far as maintenance, part availability, cost, etc???
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Old 08-03-2009, 08:11 PM   #4 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

Thanks for signing up with IHON!

I'm moving this thread to a more appropriate sub-forum..."Chit Chat".

We want to keep the Tech Forum focused on specific topics and questions regarding IHC products and related issues.
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Old 08-03-2009, 10:13 PM   #5 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

i would think so, the 350 is a solid motor, and parts are easy to get a hold of
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1972 international 1210 pu
Cat 3116 250hp 600tq
Roadranger rt6610 ttansmission
Unknown axles
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Old 08-05-2009, 12:21 PM   #6 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

Regardless of which engine you choose for a swap, assuming you swap in something new or rebuilt instead of just a transplanted engine, it is going to be expensive. If you stick with an IH engine, rebuilding it will be expensive, more so than a SBC. I just rebuilt a 392 and it cost me more money than I care to admit...for the price of the rebuild I could have bought a new Chevy crate engine.

Of course, as I indicated above, if you find a good used running 304, 345, or 392, then transplanting that in will only require acquiring all the necessary parts out of the donor vehicle. (If you are interested, I have a 304 available.)

So, if you rebuild an IH, expect spending several thousand dollars to do it right. Or you could spend those thousands on a new crate SBC and all the necessary tranny and transfer case adapters and/or swaps. If I had to do it again, I would probably go with a SBC due to all the problems I have had getting quality work done on my IH engine and obtaining quality parts. Most of the components you buy today are just crap quality and you really have to be persistant to correct all the problems they create. Very often it seems that "new" parts just mean shiny. At least with a crate engine you get a 2 year, 50,000 mile warranty. My $0.02.
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Old 08-05-2009, 07:06 PM   #7 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

I appreciate that info........I've had people telling me to replace and I have had some telling me to keep the IH. I think I am convinced to buy 350 crate with th400 tran.

Is there an easy way to determine if I have dana 30 or dana 44s on front and back.....73 scout II
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Old 08-05-2009, 07:19 PM   #8 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

yes, for the rear clean off the passenger side fo the tube, there is some numbers on the axel housing, put those numbers up and someone here can tell you what you have along with the ratios.
Or you can look at the LSTon the back of the glove box that will also give you the same info
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Cat 3116 250hp 600tq
Roadranger rt6610 ttansmission
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Old 08-06-2009, 05:30 AM   #9 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

You don't need to find those numbers to figure out what you have in the front and rear. It could be a 30 or 44 in the front, if someone has swapped it, and a 44 in the rear. To verify go to the following link posted below and match the diff cover shape to the axle type.

Dana Spicer Differentials - Dana Spicer 44 Reverse Rotation,Dana Spicer D27,Dana Spicer D28,Dana Spicer D30 Crush Sleeve Design,Dana Spicer D30 HD,Dana Spicer D30 Rear,Dana Spicer D30 Reverse Rotation,Dana Spicer D30 Short Pinion,Dana Spicer D36-ICA,
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Jesse B.
Sacramento, CA
1975 Scout II
F.A.S.T. Fuel Injected IC392
TF 727, D300 (LoMax 4:1)
SOA, SpyderTrax Rear, Hi-9 and ARB
HP Dana 44 Front, Auburn Locker
IH Parts America RS
IHCustoms Full Cage

Last edited by Jesse B.; 08-06-2009 at 05:45 AM..
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Old 08-07-2009, 05:04 AM   #10 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

How about a 4.0 F.I. upgrade? Get a donor engine from a Heep Wrangler or Cherokee.

I would think that would be great for a DD. Plus lots of upgrades available.

My oldest Son has a 99 Cherokee Sport 4.0 It seems to be a great little motor. Good HP, and Torque and mileage is respectable.
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Old 08-07-2009, 05:37 PM   #11 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

I don' t think I want to mess with fuel injection........cost and the headache. Is it easy or is the computer stuff a nightmare?
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Old 08-07-2009, 07:31 PM   #12 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

I dont know much about the computer stuff but thr 4.0 is a bulletproof engine,the erlier models wernt as controlled, so you will have to do some resarch on the computer side
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1972 international 1210 pu
Cat 3116 250hp 600tq
Roadranger rt6610 ttansmission
Unknown axles
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Old 08-08-2009, 06:10 AM   #13 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

If you believe going to fuel injection is going to be too much trouble, then you probably shouldn't be swapping out the IH for a Chevy. Stick with the IH if that is the case.

Going with a Chevy is going to create a lot of problems, not beyond an experienced mechanic, but certainly beyond the capabilities of a neophyte. So if going to fuel injection scares you, going to a Chevy should scare the hell out of you.
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Jesse B.
Sacramento, CA
1975 Scout II
F.A.S.T. Fuel Injected IC392
TF 727, D300 (LoMax 4:1)
SOA, SpyderTrax Rear, Hi-9 and ARB
HP Dana 44 Front, Auburn Locker
IH Parts America RS
IHCustoms Full Cage
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Old 08-12-2009, 06:58 PM   #14 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

I actually will be having an experienced mechanic working on the project.
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Old 09-25-2009, 07:25 PM   #15 (permalink)
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Default Re: '73 Scout Engine Swap Suggestions

OK...I found the GM Engine Swap Mount for my 350 engine...shall I try to keep the existing 727 tran or go for the th 350......it seems that buying the adapter kit is almost as much as just rebuilding a td 350...

Any thoughts? And then what to do about transfer case
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