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Atlas T-case

But I thought dana 300 the world ! :stirthepot::lmao:
 
Sean said:
When I was looking at picking up another Atlas, I was only really looking at race cases just b/c they were billet and only like $200 more...but being able to swap drive sides is a huge benefit IMO....a case like this could be used in multiple rigs if you could swap the output sides and would be totally worth it.
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Are the race cases actually billet? Mine I'm 95% certain is a race case (I can't find the invoice from ~5 years ago though) and it has the same big flange to be reversible but is not a billet case. I remember thinking the race case was billet also and disappointed when it showed up looking cast:

1729100914272.png
 
Grendel said:
Y'all are really making me like my billet TMI case, when talking about switching sides, etc. Can put it together with the same tools.
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Since I read you went new across the board care to share your total cost on said case?

Atlas race case with a bunch of ratio selections fully built is $3400-3800. I'm still not sold that a Dana 300 with one ratio selection and a bunch bling parts thrown at it is worth $4500+.

Size, weight, strength all being similar said 300 needs to more competitively priced.

I'd like to be there but I'm still not sold on this.
 
Wuz-A-zuk said:
Since I read you went new across the board care to share your total cost on said case?

Atlas race case with a bunch of ratio selections fully built is $3400-3800. I'm still not sold that a Dana 300 with one ratio selection and a bunch bling parts thrown at it is worth $4500+.

Size, weight, strength all being similar said 300 needs to more competitively priced.

I'd like to be there but I'm still not sold on this.
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Less than what you think.

I also went 4:1 in the case and I am sticking an underdrive in front of it... and will still be under your 4500.00 And it's all billet and I can switch sides. I can also get it in less than 6 months.
 
snivilous said:
Are the race cases actually billet? Mine I'm 95% certain is a race case (I can't find the invoice from ~5 years ago though) and it has the same big flange to be reversible but is not a billet case. I remember thinking the race case was billet also and disappointed when it showed up looking cast:

1729100914272.png
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Apologies....thought I read it was billet.
 
Grendel said:
Less than what you think.

I also went 4:1 in the case and I am sticking an underdrive in front of it... and will still be under your 4500.00 And it's all billet and I can switch sides. I can also get it in less than 6 months.
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Unless you get some sort of discount or something for buying the complete case then your math doesn't add up?

$1900 TMI case+ $900 JB gears+ $800 JB outputs puts it at $3600 for that alone. No other components or shifters. To top that JB? built yours too, So labor to boot.

I'm obviously missing something here...
 
Atlas race case with shifters, yokes, trans adapter, oil. was $3946. Tax+Shipping put it up to $4380
 
Grendel said:
Less than what you think.

I also went 4:1 in the case and I am sticking an underdrive in front of it... and will still be under your 4500.00 And it's all billet and I can switch sides. I can also get it in less than 6 months.
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I bought an atlas 4 speed earlier this year and wait was 91 days. And I think the vendor forgot to put the order in right away. Two speeds were a month or so quicker.

I still think there is inherent problems with the Dana 300 with popping out of gear that aren’t solved with the billet case.

I think for the buggy guy where space is a concern or someone who has a built 300 this might be the recipe. I personally wouldn’t do it again after my midnight metalworks fiasco. I’m not sold on the 300 being stronger than an atlas. The atlas is just physically larger in almost every way.
 
Bebop said:
It isn't
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What's the weak point of a D300 with 4:1 low max gears, billet case and 32sp in and out then?

Do you compare it to a race case or trail case?

What ratio in the atlas?

I just don't see how you can definitively say that one is stronger than the other.
 
YotaAtieToo said:
What's the weak point of a D300 with 4:1 low max gears, billet case and 32sp in and out then?

Do you compare it to a race case or trail case?

What ratio in the atlas?

I just don't see how you can definitively say that one is stronger than the other.
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There aren't 300M shafts not REM polished gears that exist for the D300.
Main cluster shaft is smaller as well.
 
Bebop said:
There aren't 300M shafts not REM polished gears that exist for the D300.
Main cluster shaft is smaller as well.
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Fair enough, so fully built, atlas wins. Not just on paper, but reputation also.

But what about just a standard trail series vs a billet D300? Seems like they would be very comparable in similar ratios?
 
Bebop said:
But the D300 is more expensive, no?
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Yes, but is it a worse case? It's billet and has the same size components?

I'm not trying to win an argument here, just curious if it's as cut and dry as one is better than the other. Both have a spectrum of options.
 
YotaAtieToo said:
Yes, but is it a worse case? It's billet and has the same size components?

I'm not trying to win an argument here, just curious if it's as cut and dry as one is better than the other. Both have a spectrum of options.
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I think you're trying to look for something that isn't there.

A Trail Atlas is cheaper than a fully built D300. Get the trail case if you're under 500hp and no rock bouncing.
A Race Atlas is about the same price as a fully optioned out D300. Get the Race case because it's stronger.
Unless you need a physically smaller case (valid concern in a small/lightweight application), I see no point to a churched up D300.
 
I would buy an atlas over building a Dana 300. I have broken 4to1 gears(jb), stock gears and 3 cases in half. One of the cases and gear sets was with a 1.6 16v Suzuki
 
Tydes said:
I would buy an atlas over building a Dana 300. I have broken 4to1 gears(jb), stock gears and 3 cases in half. One of the cases and gear sets was with a 1.6 16v
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Tydes said:
I would buy an atlas over building a Dana 300. I have broken 4to1 gears(jb), stock gears and 3 cases in half. One of the cases and gear sets was with a 1.6 16v Suzuki
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The Internet can't be wrong.... :lmao:
 
Wuz-A-zuk said:
Unless you get some sort of discount or something for buying the complete case then your math doesn't add up?

$1900 TMI case+ $900 JB gears+ $800 JB outputs puts it at $3600 for that alone. No other components or shifters. To top that JB? built yours too, So labor to boot.

I'm obviously missing something here...
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I sourced my own internal parts (there have been less expensive sources, and I have 2 still on the shelf) , I had my shifters - Like Atlas in the beginning, the TMI solution replaced a D300 already in place. From what I've seen most D300 issues start with a cracked case, I have 3 D300 iron cases here and 2 are cracked. Also, Tyler@TMI worked on the D300 shift pop, so I can remove the turnbuckle I have on my firewall to lock the shifter in gear.

I originally looked at an Atlas and couldn't wait for them, my distributor was $3,597.41 for a "trail Atlas" and would take 6 months. I also wanted a billet case, which bumps the price up significantly. I also may swap my Chevy 60 for a Ford SD60, so wanted to be able to swap transfer case drops.

Hard to say that any transfer case can absorb neglect, poor installs, or age. So I wanted to start fresh, with the best of everything Dana 300, install it 100% per the manufacturer and let it rip.
 
Grendel said:
I sourced my own internal parts (there have been less expensive sources, and I have 2 still on the shelf) , I had my shifters - Like Atlas in the beginning, the TMI solution replaced a D300 already in place. From what I've seen most D300 issues start with a cracked case, I have 3 D300 iron cases here and 2 are cracked. Also, Tyler@TMI worked on the D300 shift pop, so I can remove the turnbuckle I have on my firewall to lock the shifter in gear.

I originally looked at an Atlas and couldn't wait for them, my distributor was $3,597.41 for a "trail Atlas" and would take 6 months. I also wanted a billet case, which bumps the price up significantly. I also may swap my Chevy 60 for a Ford SD60, so wanted to be able to swap transfer case drops.

Hard to say that any transfer case can absorb neglect, poor installs, or age. So I wanted to start fresh, with the best of everything Dana 300, install it 100% per the manufacturer and let it rip.
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I am sure the 300 will be fine for what you’re going to do with it.
 
Grendel said:
I originally looked at an Atlas and couldn't wait for them, my distributor was $3,597.41 for a "trail Atlas" and would take 6 months.
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Your distributor gave you the middle finger on that pricing.
Even at the height of covid, Atlas were about 3 to 4 months.
Now they're about 6 to 8 weeks.

Source: I'm an AA vendor.
 
Bebop said:
Your distributor gave you the middle finger on that pricing.
Even at the height of covid, Atlas were about 3 to 4 months.
Now they're about 6 to 8 weeks.

Source: I'm an AA vendor.
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Good, fast, cheap. I wanted good and fast. Too many variables drove up the time to build and costs.

To be clear, I have an Atlas in my YJ, so I get the love for them.
 
YotaAtieToo said:
What's the weak point of a D300 with 4:1 low max gears, billet case and 32sp in and out then?

Do you compare it to a race case or trail case?

What ratio in the atlas?

I just don't see how you can definitively say that one is stronger than the other.
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The weak link is the back gear teeth on the middle countershaft in the case.. they will always pop the case when they wash through. If the billet case lives through that, that'll be the win. You can just keep throwing new gear sets in.
 
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