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Old 01-11-2008, 01:50 PM   #1 (permalink)
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I want to mate a Dana 300 to my T-18

I am looking for someone who has joined a Dana 300 and T-18 already. I have a Dana 20 on it right now and am wondering what it really takes to do this right. I know someone out there has done this before and might be willing to give me the 411 on this. Thanks ahead of time.

Last edited by Daves78JeepCJ7; 01-11-2008 at 01:51 PM.
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Old 01-11-2008, 01:57 PM   #2 (permalink)
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Novak or advance make the adapter but there is a factory T18 to Dana 300 adapter... it was used on 1980 Scouts....
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Old 01-11-2008, 02:58 PM   #3 (permalink)
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I have a T-18 to a Dana 300 right now in my 84' CJ7. The holes for the T18 mounting are already there almost-you only need to drill a few. The dana 300 connects right to the T18 with an adapter from Novak or Any other company. There isnt much too it really, just install the adapter and mate the Tranny to the Transfer Case. This combo works great for me.
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Old 01-11-2008, 03:06 PM   #4 (permalink)
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Originally Posted by CRO View Post
Novak or advance make the adapter but there is a factory T18 to Dana 300 adapter... it was used on 1980 Scouts....
The scout used a special case for the 300 with the texas style pattern & a bull gear- just like the 20. A scout D300 will bolt up to his tranny.
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Old 01-11-2008, 03:07 PM   #5 (permalink)
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Quote:
Originally Posted by PizzaFarno View Post
I have a T-18 to a Dana 300 right now in my 84' CJ7. The holes for the T18 mounting are already there almost-you only need to drill a few. The dana 300 connects right to the T18 with an adapter from Novak or Any other company. There isnt much too it really, just install the adapter and mate the Tranny to the Transfer Case. This combo works great for me.

This is the Novak where you change the output and backplate?? I emailed Novak about it couple months earlier... no reply from them yet. My question was will the kit fit a T98A, wich is the previous version T-18A and how much longer would it be compared to stock. How long is a Stak 300 with a tom woods flange?
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Old 04-01-2008, 01:06 AM   #6 (permalink)
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The scout used a special case for the 300 with the texas style pattern & a bull gear- just like the 20. A scout D300 will bolt up to his tranny.
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So if I got a D300 IH 6 spline it bolts on to a JEEP T18 witout any adapters?

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Old 04-01-2008, 04:50 AM   #7 (permalink)
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Quote:
Originally Posted by PizzaFarno View Post
I have a T-18 to a Dana 300 right now in my 84' CJ7. The holes for the T18 mounting are already there almost-you only need to drill a few. The dana 300 connects right to the T18 with an adapter from Novak or Any other company. There isnt much too it really, just install the adapter and mate the Tranny to the Transfer Case. This combo works great for me.
Wrong

You are going to need to change the output shaft inside the tranny. He has a Dana 20 mounted to the T-18. They use different shafts. Novaks kit comes with the shaft and the adapter. changing the shaft is not that hard.
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Old 04-01-2008, 04:51 AM   #8 (permalink)
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Originally Posted by Jimmy6.2 View Post
So if I got a D300 IH 6 spline it bolts on to a JEEP T18 witout any adapters?

Per
That is correct as the IH 300 is basically a Dana 20 case adapted to the Dana 300 internals.
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Old 04-01-2008, 04:53 AM   #9 (permalink)
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Originally Posted by CRO View Post
Novak or advance make the adapter but there is a factory T18 to Dana 300 adapter... it was used on 1980 Scouts....
That is wrong. The IH 300 does not use an adpater. it bolts directly to a Jeep tranny. both use the same pattern.

If you have a Ford t-18 you will still need an adapter.
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Old 04-01-2008, 06:22 AM   #10 (permalink)
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Why not go directly to novaks sight and look, http://www.novak-adapt.com/catalog/kit_183.htm

ur T18 to Dana 300 conversion makes for a strong, refined, compact geartrain assembly both on-road and off-road. It is one of the most persistently popular manual shift transmission conversions into Jeeps, providing a very compact geartrain, an excellent crawling gear, compatiability with several engines and simple installation.
Adapting the T18 & T19 to Jeep Transfer Cases
Kit 183, adapting the T18 or T19 transmission to the Jeep Dana Spicer Model 300 and FSJ New Process transfer cases
Part: #183
Weight: 17 lbs.
Price: $506.20
Options:
Options:
Buy:
Notes: Includes the adapter, transmission mainshaft, seal, gaskets, steel mount base, fastening hardware & instructions

The adapter kit is also desinged for compatibility with the Jeep NP208, 219 & 229 transfer cases as found in Full Size Jeeps, 1980-1991.

The Adapter
The Novak T18 / T19 to Jeep transfer cases adapter is very compact at only 3.2" long for a combined transmission and adapter length of 15.2". The adapter itself is cast and machined of a high-grade aluminum alloy, featuring thick flanges, a heavy cross-section and strength-adding gussets.

T18 / T19 Versions
Any versions (Ford, Jeep, IH - 2wd or 4wd) and year of the Borg Warner can be adapted to these transfer cases.

Transmission Mainshaft Replacement
Included with the kit is a mainshaft for the Borg Warner transmission. Replacement is largely straightforward and instructions are included. We also recommend our basic gasket & seal kit, or our all-inclusive master rebuild kit, depending on your assessment of your transmission's condition. See our T18 parts page for information on these items.

Transfer Case Input Shafts
All Jeep Dana 300 (and FSJ New Process) transfer case input shafts / gears feature 23 splines. Our included mainshaft will spline in directly to these input shafts with no transfer case modifications required.
Urethan Rear Mount for the Adapter Kit
Mount, rear, transmission, polyurethane Chevy / Jeep / Novak style
Part: #RMU
Weight: 1 lbs.
Price: $36.80
Buy:

Transmission Rear Mount
This transfer case adapter's design is based on Novak's Universal Series adapters that feature a modular mounting and support system. Included with the adapter kit is a steel base that is a highly configurable mounting foot, and is ready to accept our industry standard urethane isolator mount, available for purchase (below). This is our preferred rear mount unit. Our kit is designed for it, and its usage is essential to protect powertrain components from the flex and jar typical of any automobile, but especially Jeeps.

Whether you are assembling onto a stock cross member / skidpan or if you are setting up a high-clearance skid plate, you will find it to be a clean and simple process.

Engine Crank to Transmission Pilot Bushing
Many manual transmissions will be married to stock as well as conversion engines, and a custom pilot bushing will be required in many instances. Some common choices with the T18 / T19 transmissions are listed below:
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Old 04-01-2008, 08:04 AM   #11 (permalink)
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One the one T-18/300 we did into a cj7, we just went with the t-18 from partsmike already rebuilt and set up for the 300. So, I cant really comment on whats involved in the rebuilding and changing the mainshaft.

The pair did mate up perfect, and the AA adapter had two sets of mounting holes, allowing us to clock up a few degrees further.

The adapter is a bit long, and did result in us using a super stubby 13" CV shaft in the back.

We recently stretched the rear out 4" to get a little driveshaft back.

In a 7 its not likely as much of a concern.
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Old 04-01-2008, 10:32 AM   #12 (permalink)
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https://eshop.advanceadapters.com/co...02-50-7502.htm
follow link, then
Scroll down and click on "click here for assembly instructions"
or follow this link:
http://www.advanceadapters.com/instructions/50-7502.pdf
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Old 04-01-2008, 01:41 PM   #13 (permalink)
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I got friend that sells a -80 IH 6 spline D300 for a fair price, is the D300 that much more fun than a D20?

my ratio would go from 67:1 to 86:1 that I understand but otherwise?

Sorry for hijacking the post.

Per
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Old 04-01-2008, 02:52 PM   #14 (permalink)
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I am getting everything together right now to do the same install.

If you want to go with the Scout setup, there is a guy in Oregon selling a T-19 and Scout Dana 300 for $750.00 obo.
Sounds like a decent setup
/forum/engines-trannys-t-cases-sale/670825-ford-t-19-dana-300-a.html
The T-19 is synchroed first.

I am going to go with the Advance Adapters setup and find a standard Dana 300 so that will give me the option of moving up to an Atlas or Stak later if I wanted.

/forum/motor-tranny-t-case-performance/616804-advance-adapter-blow-out-sale.html
Rockbuggy supplies has the best price on an adapter so far.
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Old 04-02-2008, 11:32 AM   #15 (permalink)
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That is correct as the IH 300 is basically a Dana 20 case adapted to the Dana 300 internals.
<Hyjack>
You wouldn't happen to know if that case has a different casting # or not? I pm'd a couple people about what casting # the Scout 300 case had, and no one had a case actually in their possession anymore or it was in deep storage.
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Old 04-02-2008, 11:51 AM   #16 (permalink)
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The fastest way to ID a Scout 300 is to look at the speedo cable attachment. On a scout 300 the speedo cable comes out on the passenger side. It also has an aluminum tail housing.

A scout 300 will bolt directly to any Jeep t-18 as long as the bull gear is 6 spline. There are some auto versions that I believe used the 10 spline bull gear- but they would have been bolted to a 727. Don't quote me on that part though......

These things are uber rare...why would someone want to run one and risk breaking it on the trail? Finding a replacement would be next to impossible and the 2.61 low range is not *that* much better than a D20. Anyways, you would probably have better luck rounding up the parts to convert a Jeep D20 to the 2.46 low range by sourcing the bronco D20 bull gear and Jeep D18 cluster gears. For the cost, it makes more sense to spring for an Atlas and be done with it.
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Old 04-02-2008, 12:19 PM   #17 (permalink)
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The fastest way to ID a Scout 300 is to look at the speedo cable attachment. On a scout 300 the speedo cable comes out on the passenger side. It also has an aluminum tail housing.
Because I know a yahoo that has a pile of disassembled IH parts and no memory, so I cannot use the output shaft/speedo or the shifter/front bearing retainer to see what is what.

I also have unanswered emails and pm's that are over 6 months old that are from people who take large dirty pictures of Scout 300's or clean satellite pictures......

I would assume the casting would start with D300..... but if it is actually a modded D20 casting...... It would be a shame to find out after the scrap truck shows up, which will be some day.
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Old 04-02-2008, 06:51 PM   #18 (permalink)
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For the cost, it makes more sense to spring for an Atlas and be done with it.

You still have to buy the same $500 plus adapter to put an Atlas behind a T18 as you do a Dana 300
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Old 04-03-2008, 09:39 AM   #19 (permalink)
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You still have to buy the same $500 plus adapter to put an Atlas behind a T18 as you do a Dana 300
true but you end up with a 1000% better t-case.
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Old 04-03-2008, 10:04 AM   #20 (permalink)
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true but you end up with a 1000% better t-case.
Not everyone has unlimited budgets.
I am doing engine and steering upgrades at the same time so my budget will be spent for a while.
I plan on running the 300 case for a season or two and then save up for an atlas or stak.
I should be able to get the money back out of the Dana 300 when I go to resell it.
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Old 04-03-2008, 10:09 AM   #21 (permalink)
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Not everyone has unlimited budgets.
I am doing engine and steering upgrades at the same time so my budget will be spent for a while.
I plan on running the 300 case for a season or two and then save up for an atlas or stak.
I should be able to get the money back out of the Dana 300 when I go to resell it.
nor do I. I am just at a different phase in my jeep evolution and bought an altas 4 years ago after breaking my 4th D300. An aftemarket t-case is spendy, but the investment is solid and it will reward you with reliable service and no worries of a broken output or case.

of course, there is always the automatic swap. It's possible to adapt a D300 with no aftermarket adapters
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Old 04-03-2008, 06:23 PM   #22 (permalink)
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<Hyjack>
You wouldn't happen to know if that case has a different casting # or not? I pm'd a couple people about what casting # the Scout 300 case had, and no one had a case actually in their possession anymore or it was in deep storage.

Yes it is a different case. I do not know the numbers.. You might try the Bender Bulletin board. they may be able to get you the numbers
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In what appears to have been an understatement, the plant operator described the situation at the Number 4 reactor as "not so good."

Super conversion calculator website

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Old 04-06-2008, 08:22 PM   #23 (permalink)
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Does anyone know if AA or Novak have a spud Shaft to go from the 6 spline of the t-18 to a 23 spline for the 300
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