Rearend id in fender tag?

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mostrood

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I just bought a 75 Duster, no motor or trans but i know it had /6. I havent picked the car up yet, was wondering if anyone can help id the rearend it has off the fender tag? Is that possible? Thanks

20230521_142729.jpg
 
Not possible to tell what ratio (ie: 2.45, 2.76 or 3.21) or size of rear end (7 1/4 or 8 1/4) from the fender tag. The build sheet would tell you though.
 
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Some A code designate axle ratio and size with options such as a performance axle code or a tow package code. You tag doesn't have any of those code so in your case, no.
It probably has an 7.25 rear with either 3.55 or 3.91 gears. Can't remember what ratio came standard in /6 cars. In /6 trucks it was 3.91
 
moparmarks said:
Some A code designate axle ratio and size with options such as a performance axle code or a tow package code. You tag doesn't have any of those code so in your case, no.
It probably has an 7.25 rear with either 3.55 or 3.91 gears. Can't remember what ratio came standard in /6 cars. In /6 trucks it was 3.91
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Uhhh, this was after the fuel crisis! The highest ratio was 3.55 by then according to the 1974 dealership data book. And the 3.55 was only available with a sure grip which is code D91 (high isn’t on the fender tag).

The standard ratio on 225 Duster with a torque flight was 2.76 with the optional ratio being 3.23.
 
3.23 was highest ratio in 75 2.45 was another optional ratio

standard was 2.76 with an /6 auto
 
H22A4 said:
Uhhh, this was after the fuel crisis! The highest ratio was 3.55 by then according to the 1974 dealership data book. And the 3.55 was only available with a sure grip which is code D91 (high isn’t on the fender tag).

The standard ratio on 225 Duster with a torque flight was 2.76 with the optional ratio being 3.23.
Click to expand...
The GG white book shows a 7.25 3.55 for 72 but not for 73-4, just 3.23 and 2.76
Wish I had a 75-78 book. Wonder what gears came in the 76 A /6 833OD? First American car to get 31 MPG hwy.
I had a 75 Dart Sport /6 3 on the floor but don't know what gears it had. Felt like 2.76 as it was slower than frozen snot.
I've had /6 trucks from 73-87 with /6 and all had 3.91 gears in either a 8.75 or 8.25.
 
moparmarks said:
The GG white book shows a 7.25 3.55 for 72 but not for 73-4, just 3.23 and 2.76
Wish I had a 75-78 book. Wonder what gears came in the 76 A /6 833OD? First American car to get 31 MPG hwy.
I had a 75 Dart Sport /6 3 on the floor but don't know what gears it had. Felt like 2.76 as it was slower than frozen snot.
I've had /6 trucks from 73-87 with /6 and all had 3.91 gears in either a 8.75 or 8.25.
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Trucks were exempt from fuel economy standards that were coming in so that’s why they were still available with 3.91 gears!

That’s the loophole AMC used when they came out with the 4WD Eagle.
 
What came with the 833OD? I can't see using 3.23 with an OD especially behind a /6 and a 55 mph speed limit. Those cars have 7.25 rears.
 
H22A4 said:
Trucks were exempt from fuel economy standards that were coming in so that’s why they were still available with 3.91 gears!

That’s the loophole AMC used when they came out with the 4WD Eagle.
Click to expand...
Yes I was just making a useless point that they still made a 8.25 3.91 after 72, just not available in cars?
 
My late build date 1973 Dodge Dart Sport 340 (low compression 340) 727 column shift, deluxe bench (bucket seat top arm rest center deluxe bar at pattern sewed up) A/C -heat. AM all black insides with full interior in trunk since had a fold down seat, and the 8 1/4 321 sure grip. Gave it away when I put the 8 3/4 in.
I do not think they had 323 were 321
 
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Thanks everyone, such knowledge. I peeked under(its surrounded by junk) looks small- best hope is its an 81/4. Guy i bought it from swears its both wheels spin the same way when its up on a jack.? Not sure I believe him.
 
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