Data Plate and Differentials

[Stubs68]

General Question about Data Plates and (SPEC) equipment listed. This first data plate shows a standard W100 with Spicer (Dana) 60 rear axle. The second data plate shows "SPEC" in the same field but then list the axel front and back as a number? Does this annotate that the owner ordered a non-standard option axle or an axle different than the standard option as it is annotated as "SPEC"? Anyone know what these AXLE FRT / REAR AXLE numbers are? Thanks.

[soopernaut]

The second data plate shows "SPEC" in the same field but then list the axel front and back as a number? Does this annotate that the owner ordered a non-standard option axle or an axle different than the standard option as it is annotated as "SPEC"?

Yes.

[Stubs68]

So, where would one look up those numbers to see what the "SPEC" axel is?

[soopernaut]

The build sheet would tell you, but I'm guessing you won't be able to find it. The other option would be trying to compare to another truck. There is a SERT book, but it really doesn't have much of a description beyond what you have now.

[Kaegi]

does it mean they limited slip front and rear?

[Stubs68]

Hummmmm. Not looking good to find out what those numbers equate to? I thought I ran across a mention of a business that you could send in your data plate info and they would decode it for you. Maybe like a Galen Grovier tag service for Sweptlines? I have had the front diff cover off and it did not look like anything special. Had 3.54 gears. Will keep this post out for a while to see if anyone throws me a bone. Thanks.

[PwrWgnDrvr]

Hummmmm. Not looking good to find out what those numbers equate to? I thought I ran across a mention of a business that you could send in your data plate info and they would decode it for you. Maybe like a Galen Grovier tag service for Sweptlines?

No such thing for swepts and no ref info anywhere to decode SERT tags. Ben Simons has a partial book that gives minimal info for the ones that are in it.

[dodgeboykim]

Eric Bannerman is VIN Tag Guru. He's on a number of Sweptline based and Power Wagon Facebook pages.

[PwrWgnDrvr]

If you just want to decode the VIN, that's simple. Its available at the sweptline registry, here on this site, and multiple others. Its the SERT #'s that are unknown.

[Stubs68]

Update - Eric Bannerman was able to help me out. Eric has a wealth of of information on SERT numbers. Thank you Eric!

Apparently my W100 was ordered with upgraded axels [SERT code (04542) is a the number for a heavy-duty non-standard axle]. Most likely a 3500lb front axle (Dana 44), 1 Ton U-joints and yokes, NP435. The 3500lb axle has the 7” ball. Most W200’s have these but was not standard equipment on the W100. Rear Axle – Dana 60 (06221), NPROC 435D3, 4SYN = synchronized 4-speed transmission ? Heavy Duty Cooling (larger radiator / fan shroud) = 17347
Winch BRA = 25817 (Braden Winch), SP WHL CA = 42406 (spare tire carrier), SHK AB G3 = 07597 (? Possibly heavy duty shocks). Hope this information helps others.

[swptln]

Update - Eric Bannerman was able to help me out. Eric has a wealth of of information on SERT numbers. Thank you Eric!

Apparently my W100 was ordered with upgraded axels [SERT code (04542) is a the number for a heavy-duty non-standard axle]. Most likely a 3500lb front axle (Dana 44), 1 Ton U-joints and yokes, NP435. The 3500lb axle has the 7” ball. Most W200’s have these but was not standard equipment on the W100. Rear Axle – Dana 60 (06221), NPROC 435D3, 4SYN = synchronized 4-speed transmission ? Heavy Duty Cooling (larger radiator / fan shroud) = 17347
Winch BRA = 25817 (Braden Winch), SP WHL CA = 42406 (spare tire carrier), SHK AB G3 = 07597 (? Possibly heavy duty shocks). Hope this information helps others.

Did he tell you how he got this info? because none of these SERT's are listed in the Parts Manual..

The 435D3 does not mean synchronized 4-speed, it means it was ordered with the close ratio 4-speed, this was a standard option for 1968 and would not be associated with a SERT.

All 1968 W100's came with Dana 60's, so the (06221) does not mean Dana 60, this SERT has to do with the axle rating. A stock W100 had a 4500lb axle rating, W200's had a 5500lb rating. My opinion would be this was for putting a W200 5500lb axle in the truck.
The (04542) might be a 3500lb axle as it's for the axle rating, which would be the large knuckle Dana 44.
The (07507) most likely was just an upgrade to W200 shocks and would coincide with (06221) and (04542).
The (25817) was obviously the Braden LU2 Winch, which was not a standard option on W100's in 1968 with 1550lb front springs.
The (42406) would have been the rear fender mount spare as it was not available on short bed utiline as a standard option in 68.
The (17347) is a mystery. I can say with confidence, it's not associated with the cooling system as Dodge did not call it HD Cooling, it was called Increased Cooling. My thought or guess is, it was for the charging system, as the 60A alternator option was called Heavy-Duty.

[soopernaut]

Update - Eric Bannerman was able to help me out. Eric has a wealth of of information on SERT numbers. Thank you Eric!

Heavy Duty Cooling (larger radiator / fan shroud) = 17347

The (17347) is a mystery. I can say with confidence, it's not associated with the cooling system as Dodge did not call it HD Cooling, it was called Increased Cooling. My thought or guess is, it was for the charging system, as the 60A alternator option was called Heavy-Duty.

I'm pretty sure this number is for cooling. There is a SERT 17230 that is labeled "Cooling S" or "Cooling 8" and there is a SERT 17351 that is labeled "Inc Cooli". 17347 is between these two numbers so it should refer to the same component.

[Kaegi]

the 435 D3 is the close ratio trans. first gear is actually usable. real nice for towing

[swptln]

the 435 D3 is the close ratio trans. first gear is actually usable. real nice for towing

Sorry, I screwed up on that one and corrected it, it is the Close Ratio.

[swptln]

Update - Eric Bannerman was able to help me out. Eric has a wealth of of information on SERT numbers. Thank you Eric!

Heavy Duty Cooling (larger radiator / fan shroud) = 17347

The (17347) is a mystery. I can say with confidence, it's not associated with the cooling system as Dodge did not call it HD Cooling, it was called Increased Cooling. My thought or guess is, it was for the charging system, as the 60A alternator option was called Heavy-Duty.

I'm pretty sure this number is for cooling. There is a SERT 17230 that is labeled "Cooling S" or "Cooling 8" and there is a SERT 17351 that is labeled "Inc Cooli". 17347 is between these two numbers so it should refer to the same component.

I disagree, They never referred to the cooling system as Heavy Duty in any reference material, brochures, service manuals or Parts manuals it's all "Increased Cooling". The SERT numbers are not in any particular order either as they only refer to specific parts and or parts groups.
As an example: I have in group 7 for cooling, SERT's that range from 13852 to 31270 for the same part number. There is nothing in Group 7 SERT's listed as Heavy Duty.
The first thing you have to understand with SERT number's, it doesn't refer to one particular part. I have some SERT numbers that refer to over a hundred different parts and they can also go across multiple parts groups too. So, I wouldn't assume just because it's a 17*** it deals with Cooling.

[soopernaut]

I have SERT numbers and descriptions where they did refer to heavy duty cooling. One of them is a 173XX number and the others are from newer trucks.

It all depends on what someone typed to be put on the sticker/plate. They even forgot the i in the last one.

17385 H/D COOL I(or Cool 1)
HA8033 HD Cooling
HA8036 HD Cooling
HA8038 HD Coolng

In your example I doubt the SERT numbers are for the same specific part. 13852 is probably engine or carburetor related and 31270 is probably a SERT summary, which there is virtually no way to know what it covers without some kind of written documentation, plus it covers multiple parts.

[swptln]

I'd like to see photo's of those, if possible.
When you say newer, what years are you referring too?

[soopernaut]

I'd like to see photo's of those, if possible.
When you say newer, what years are you referring too?

I do not have photos.

The HAXXX SERTs listed above are from 1971 trucks. There is also a HA8032 from 1970 that is just labeled "Cooling". 17385 listed above was from a 1969 truck.

[swptln]

I'd like to see photo's of those, if possible.
When you say newer, what years are you referring too?

I do not have photos.

The HAXXX SERTs listed above are from 1971 trucks. There is also a HA8032 from 1970 that is just labeled "Cooling". 17385 listed above was from a 1969 truck.

Where are you getting all these SERT's from?
I'd really like to see them. My Special Equipment Sections and even the 71 Supplement don't show anything for HD Cooling. Cooling yes, but nothing HD.

[soopernaut]

Where are you getting all these SERT's from?

I got them off data plates on trucks.