Did 3:91 gears come stock on any chargers?

[dodgechar]

           I thought that 3:91  never came in chargers, if true, why? I've seen them plenty in roadrunners from factory  but never saw them in any charger order paperwork.  Maybe in 4 speed vehicle?    Mine had 3:23 w/ 383hp.  Did they come w/440 cars?

[Dodge Don]

           I thought that 3:91  never came in chargers, if true, why? I've seen them plenty in roadrunners from factory  but never saw them in any charger order paperwork.  Maybe in 4 speed vehicle?    Mine had 3:23 w/ 383hp.  Did they come w/440 cars?

Option code D57 for 3.91:1 gears was an option in 1970 Chargers however was not available on R/T models.

[Ghoste]

However it was available in a lot of other Chargers.  What model year were you wondering about?

[69CoronetRT]

           I thought that 3:91  never came in chargers, if true, why? I've seen them plenty in roadrunners from factory  but never saw them in any charger order paperwork.  Maybe in 4 speed vehicle?    Mine had 3:23 w/ 383hp.  Did they come w/440 cars?

3.91's are not common in Chargers. They were available with the 383 only 69-71.

[Ghoste]

BUT, in spite of popular belief, they weren't all that common in any other Mopar musclecar either.

[69CoronetRT]

BUT, in spite of popular belief, they weren't all that common in any other Mopar musclecar either.

True. Only about 7-8% of the RR's and SBs got them. 3.91's in Chargers was less than that.

[Cooter]

I assume first and foremost, that fuel mileage was a concern, then would be the Charger was Dodge's "Upscale" musclecar. Kinda like the 1957-58 Chrysler 300 Letter series..."Bankers" hot rods.

[dodgechar]

  So special order only , code a31   hp axle package, 69-71,. a13  engine convertion pakage 69.   So   what the word  on use  in 69 charger  w/440 - 727?

[69CoronetRT]

  So special order only , code a31   hp axle package, 69-71,. a13  engine convertion pakage 69.   So   what the word  on use  in 69 charger  w/440 - 727?

No, they were not 'special order'. They were a regular option just like a radio, A/C, PDB, etc.

A13? Where'd that come from?

As stated above, they were only available with the 383-4bbl; auto or manual.

[gtx6970]

the most common place for 3.91's  is A100 trucks and vans

[dodgechar]

    Found  code a13- 69 , in ,chrysler corp. production option code book  69- 71,  4th printing 1/1996.  Still a good gear for this 440/727  69?  Where all 3:91  posi?  If they mostly in trucks for bottom end torque right.

[maxwellwedge]

You could also get a 3.91 in an M code 440 Dart/Cuda  -  1969

[69CoronetRT]

You could also get a 3.91 in an M code 440 Dart/Cuda  -  1969

That's the A13 package.

[Kern Dog]

Posi wasn't available in any Mopar.

[Cooter]

No, Not all 3.91 gear sets were Sure Grip....I have run up on a couple peg legs...MOST of the A100 Van 3.91 gear sets with the Sure Grip unit were of the lighter duty because most had the Leaning tower of power, Slant 6...(IE: "741")

[dodgechar]

  The only trouble w/ these is highway speed is somewhat limited of course, but light to light is always fun. Im thinking a overdrive  may be in the future.  Budget allowing.

[maxwellwedge]

You could also get a 3.91 in an M code 440 Dart/Cuda  -  1969

That's the A13 package.

Yessir  -  This one has the lowly 3.55's   

[dodgechar]

  3:55 would be a perfect  in between compromise alright. Probly alot cheaper then overdrive too.  SURE GRIP of course.  Nice ride

[morepower]

yeah I have 3.91's with 28 inch tall tires and im screaming in the BB 440 down the highway to barely keep up at 65. not recomend for heavy highway driving...now in town..oh boy its fun

[Brightyellow69rtse]

i run 4.10s with a 28" tire and i think its totally fine. switching from 26" tire to a 28" tire made a big difference imo.

[sportony]

My father has a 1968 H code 383 HP charger, and it has a 4-speed and 3.91 suregirp rearend in it (Tag on the pumkin says so).....  He bought it used at a Ford dealership in the summer of 1969, and has never done anything to the rearend.  It also came with a 67 steering wheel, so I gather it was an early production model.  Only other steering wheel Ive seen like it was on a 67 coronet.

Not sure if it was supposed to optioned that way, or even if it was a legitimate option, but all I can say is "thats whats on the car".... and its been on there ever since he bought it.

[twodko]

You could also get a 3.91 in an M code 440 Dart/Cuda  -  1969

That's the A13 package.

Yessir  -  This one has the lowly 3.55's   

That is the nicest Dart I've seen in ages. I'd love to see some more pix of it. Sorry to bogart the thread.

[morepower]

i run 4.10s with a 28" tire and i think its totally fine. switching from 26" tire to a 28" tire made a big difference imo.

it is totatlly fine for you. I don't like to tach that many rpms for so long that is why it isnt as fine with me 

[Ghoste]

Amen to that.  I fall into the 4:10 28 inch tire crowd but I dread the 5 hour drive to the Nats each year.