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Old 09-16-2015, 10:40 PM   #43
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Originally Posted by Cummins12V98 View Post
HOLD THE BUS!!!

Are you talking DRW or SRW??? The 3:73 is ONLY available with the DRW. Make sure the pucks for the hitch and get the B&W RVK3600 with either truck.
I confirmed on the build sheet SRW with 3:73 rear end.

Because of the short box, I'm gonna get the Pull-rite 2900 18K hitch.
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Old 09-17-2015, 05:23 AM   #44
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I confirmed on the build sheet SRW with 3:73 rear end.

Because of the short box, I'm gonna get the Pull-rite 2900 18K hitch.
So you are going with the 68RFE and 3:42's?

I had that combo pulling 28-30K combined for 65K with no problems!

Not calling you a liar but all SRW RAM trucks come in one rear axle configuration, 3:42.

Was the build sheet accepted by RAM for the 3:73's or was it something a dealer wrote up?
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Old 09-17-2015, 07:50 AM   #45
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So you are going with the 68RFE and 3:42's?

I had that combo pulling 28-30K combined for 65K with no problems!

Not calling you a liar but all SRW RAM trucks come in one rear axle configuration, 3:42.

Was the build sheet accepted by RAM for the 3:73's or was it something a dealer wrote up?
I'm dealing with the Sales Mgr direct. He pulled up the build sheet on the truck from Dodge on his screen. Apparently, you must be able to get different options when you get the Aisin trans. They tune the 6.7 to 385 HP because of the heavier trans and can also change the rear end. This truck was full set up for towing with auto level rear end and 5th wheel prep with cargo camera. He said it has a 3:73 gear rear end. It's an SRW.

I'm only going by what he said.
If it really comes with a 3:42, I'd buy it as its the lower gear rear that changed my mind for a daily driver and fuel economy in mind. Overall, my payment only goes up $57 a month for the term. Not a big deal in the grand scheme for a more powerful truck with more options.
I'd rather have the higher hp and torque.

Either way, it's a gorgeous, well appointed truck.

As an aside, I spoke with my diesel mechanic on what's better, the F350 Powerstroke or the Ram 3500 Cummins. He said Ram 3500 Cummins hands down!
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Old 09-17-2015, 03:53 PM   #46
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Les,
I do not think the sales manager is reading the screen correctly. Per Ram all SRW trucks will be equipped with the 3:42 gear ratio and the 68RFE 6 speed auto when equipped with a 6.7L Cummins. This AISIN and 3:73 /4:10 gear ratios only come with the DRW set-up. Please see the Ram Body Builder's Web Site under towing guide lines. You will see that all SRW trucks are equipped with the 3:42 gear set when ordered with the 6.7L Cummins engine.

Now the 3:73 gear sets are available in SRW trucks with a gas engine!

Jim W.
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Old 09-17-2015, 06:32 PM   #47
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I'm dealing with the Sales Mgr direct. He pulled up the build sheet on the truck from Dodge on his screen. Apparently, you must be able to get different options when you get the Aisin trans. They tune the 6.7 to 385 HP because of the heavier trans and can also change the rear end. This truck was full set up for towing with auto level rear end and 5th wheel prep with cargo camera. He said it has a 3:73 gear rear end. It's an SRW.

I'm only going by what he said.
If it really comes with a 3:42, I'd buy it as its the lower gear rear that changed my mind for a daily driver and fuel economy in mind. Overall, my payment only goes up $57 a month for the term. Not a big deal in the grand scheme for a more powerful truck with more options.
I'd rather have the higher hp and torque.

Either way, it's a gorgeous, well appointed truck.

As an aside, I spoke with my diesel mechanic on what's better, the F350 Powerstroke or the Ram 3500 Cummins. He said Ram 3500 Cummins hands down!
YUP, Cummins is a true medium duty engine also the Aisin is a true medium duty trans! Slice it how you want their claims are being backed up by SAE J2807.

Your mechanic KNOWS!

Fact the 13-15 SRW 3500's ALL came with 3:42's, even with the Aisin.
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Old 09-17-2015, 08:56 PM   #48
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You guys are correct!

I went into the dealer today and confirmed its the 3:42 rear end with the H/O 6.7 Cummins and Aisin in the SRW.

It's decision time. However I have to wait to see what they'll give me for my 2013 F150 Platinum 4x4.
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Old 09-18-2015, 11:27 AM   #49
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You guys are correct!

I went into the dealer today and confirmed its the 3:42 rear end with the H/O 6.7 Cummins and Aisin in the SRW.

It's decision time. However I have to wait to see what they'll give me for my 2013 F150 Platinum 4x4.
It really does not matter! Just go there bend over get it done and be happy!
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Old 09-18-2015, 02:22 PM   #50
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It really does not matter! Just go there bend over get it done and be happy!
My butt is already puckering with anticipation LOL!
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Old 09-18-2015, 03:19 PM   #51
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I've read in Cummins forum that with the Aisin transmissions gearing, the 3.42 rear differential is more like a 3.73 ratio or higher. They say it tows heavy just fine. Not sure about that, but You might check into it.
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Old 09-18-2015, 04:06 PM   #52
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I have a 14 with 342 and a 68rfe total weight with truck and trl loaded is 23000 .
It pulls that wt just fine 18 inch wheels.. Got about 4500 towing miles this trip avg fuel 11.5 towing.
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Old 09-18-2015, 05:18 PM   #53
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I've read in Cummins forum that with the Aisin transmissions gearing, the 3.42 rear differential is more like a 3.73 ratio or higher. They say it tows heavy just fine. Not sure about that, but You might check into it.
My 2011 HO Dually did fine with the 3:42's and 68RFE where it did not shine is getting the load rolling. With the Aisin the starting gears are lower. I towed 28-30K combined for 65K with zero problems.

Running in 5th with 3:42's is the same as running in 6th with 4:10's.
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Old 09-18-2015, 05:21 PM   #54
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Better look at your numbers 65000 lb ?
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Old 09-18-2015, 05:22 PM   #55
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My bad l thought you meant wt not miles.
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Old 09-18-2015, 07:09 PM   #56
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I guess my only question is do I need it for the added $5,000? The more horsepower (15 more hp) truck with Aisin (65lbs more torque) also comes with 5th wheel prep, auto level suspension and cargo box camera.
Everything else is the same Lariat package with 6.7 Cummins except with 68RFE trans.

What would you do? Like I said, only an added $57. per mo. over the full term.
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