[Whistling Blower]

I have a 2019 Red-eye wide body. Was looking at doing a 3.09 diff (as it has a 2.62 in it now) when putting the diff brace and all the aad arms ect on it. found two part number and cost with this diff on East coast Moparts website. #68427796AA for about $950 and the #68427799AA for $1450. Can anyone advise me if they are basically the same or if there are something different between them and worth the extra cost. They are on back order and might be awhile before I get one.

 

[onewidecat1]

I have a 2019 Red-eye wide body. Was looking at doing a 3.09 diff (as it has a 2.62 in it now) when putting the diff brace and all the aad arms ect on it. found two part number and cost with this diff on East coast Moparts website. #68427796AA for about $950 and the #68427799AA for $1450. Can anyone advise me if they are basically the same or if there are something different between them and worth the extra cost. They are on back order and might be awhile before I get one.

Yes there are two different 3.09 rear ends you can purchase. The more expensive one, for lack of a better word is beefier and is found in the demon and redeye. The cheaper one was found in scatpacks. To my knowledge both would work, but I advise you go for the more expensive one because they were designed for the redeye (your car). I put a oem demon rear end in my WB hellcat and I ultimately went back to the 2.62. Hope this helps!

 

[Whistling Blower]

Yes there are two different 3.09 rear ends you can purchase. The more expensive one, for lack of a better word is beefier and is found in the demon and redeye. The cheaper one was found in scatpacks. To my knowledge both would work, but I advise you go for the more expensive one because they were designed for the redeye (your car). I put a oem demon rear end in my WB hellcat and I ultimately went back to the 2.62. Hope this helps!

Why did you stay with the 2.62?

 

[Whistling Blower]

When people say stronger, had there been any comparison side by side of the two differentials?

 

[Slidd]

When people say stronger, had there been any comparison side by side of the two differentials?

The case is beefier and hardened and Dodge claimed a 20% greater strength.

The gears are also shot peened for strength, they felt it was needed because there's less teeth on the 3.09 than the 2.62.




Sent from my SM-N960U using Tapatalk

 

[onewidecat1]

Why did you stay with the 2.62?

The biggest reasoning is the shifting. When the 3.09s were in the shifts going down were very sluggish and sloppy and sometimes violent I have a post with videos showing specifically what I mean if you want to check it out!. Also I do a lot of highway for work so I spent a lot more on gas for having the rpms so high all the time. Finally, the car was completely useless in 1st or second gear I would spin all day, even at the track. If your looking to go faster in your stock cat the 3.09s do help, it just wasn't worth all of the effects that came with it for me because I daily drive mine.

 

[GOING TO HELL 19]

The biggest reasoning is the shifting. When the 3.09s were in the shifts going down were very sluggish and sloppy and sometimes violent I have a post with videos showing specifically what I mean if you want to check it out!. Also I do a lot of highway for work so I spent a lot more on gas for having the rpms so high all the time. Finally, the car was completely useless in 1st or second gear I would spin all day, even at the track. If your looking to go faster in your stock cat the 3.09s do help, it just wasn't worth all of the effects that came with it for me because I daily drive mine.

Isn't that odd? For the reasons you don't like the 3.09 is why I love it! Except for the gas mileage part of course. Chocolate and vanilla.

 

[Whistling Blower]

With all the information I now have a question. Should I put in the 3.09 or just keep the 2.62 gear? Plan is to 90% be a street car but do want to do some roll racing and drag racing. Build the power to 850-950whp but not sacrifice it as a street/daily take a trip in it car. Does this 3.09 really make a big difference in drag racing these?
Your options matter so please give sound advice with some personal knowledge of your results. Appreciate your advice.

 

[Reaperhwk]

With all the information I now have a question. Should I put in the 3.09 or just keep the 2.62 gear? Plan is to 90% be a street car but do want to do some roll racing and drag racing. Build the power to 850-950whp but not sacrifice it as a street/daily take a trip in it car. Does this 3.09 really make a big difference in drag racing these?
Your options matter so please give sound advice with some personal knowledge of your results. Appreciate your advice.

I posted a separate thread on this a few days ago(as well as searched tons of threads from over the years), you'll get tons of different opinions. But the common thing that most people agree on is:

1)At the track the 2.62 vs. 3.09 offers little difference in ET(60' doesn't improve that much if at all, and the 3.09 may have an extra shift on the 1/4 mile).
2)3.09 makes the car more punchy on the street and may be a better "street" gear if you like that
3)If your using street tires, the 3.09 really makes 1st/2nd useless, you'll need some sticky tires to take advantage.
4)At upgraded power levels(900+ or lots higher), the high HP guys seem to like the 2.62 because they can't get traction anyway with the 3.09's.
5)Gas mileage is better with 2.62 if you do highway
6)The DEMON uses the 3.09


I ordered 2.62's with my JB before I knew all this, and may upgrade to 3.09 one day but it's not high on the list right now. I'll see how I like the car and how I drive first.

 

[Whistling Blower]

1st purchase was the nitto 555 R2 and G2 for the front. Truly appreciate your very sound advice. I have a very high horse power Nissan GTR and do not want this car to become anything like that where it's constantly being worked on and living at a speed shop..

 

[Reaperhwk]

1st purchase was the nitto 555 R2 and G2 for the front. Truly appreciate your very sound advice. I have a very high horse power Nissan GTR and do not want this car to become anything like that where it's constantly being worked on and living at a speed shop..

My advice all comes from the keyboard, lol. I don't have my JB yet, on order. So you can say I just summarized other people's advice(after all I've read) in one post! Don't have first hand experience with either 2.62 or 3.09 myself. Hopefully in a few months I'll have some........still waiting..... and waiting..............

Also I've read that the fastest modified Red Eye is running 2.62's through several posts. But I haven't confirmed that myself.....

 

[Whistling Blower]

My advice all comes from the keyboard, lol. I don't have my JB yet, on order. So you can say I just summarized other people's advice(after all I've read) in one post! Don't have first hand experience with either 2.62 or 3.09 myself. Hopefully in a few months I'll have some........still waiting..... and waiting..............

Also I've read that the fastest modified Red Eye is running 2.62's through several posts. But I haven't confirmed that myself.....

I've barely driven mine as its winter and car is getting clear bra ceramic ect but I think you'll love it when you get it. These are such fun street cars..

 

[Reaperhwk]

I still think though, for all out drag performance if you run slicks/skinnies/drag suspension the 3.09 would be better, but you need to hook hard. That's the problem.......

 

[Whistling Blower]

I still think though, for all out drag performance if you run slicks/skinnies/drag suspension the 3.09 would be better, but you need to hook hard. That's the problem.......

The plan is to get some weld 17inch wheels for the rear and run my 305 45 17 rear drag radial tires at the drag strip.

 

[usmc341]

The biggest reasoning is the shifting. When the 3.09s were in the shifts going down were very sluggish and sloppy and sometimes violent I have a post with videos showing specifically what I mean if you want to check it out!. Also I do a lot of highway for work so I spent a lot more on gas for having the rpms so high all the time. Finally, the car was completely useless in 1st or second gear I would spin all day, even at the track. If your looking to go faster in your stock cat the 3.09s do help, it just wasn't worth all of the effects that came with it for me because I daily drive mine.

Isn't there a TCM tune that fixes the shifting issues? My factory 3.09 shows none of those issues.

 

[ScLeCo]

I have the "cheap" 3.09 and I'm putting down a little over 1K to the wheels and so far it's held up fine.
YMMV.

 

[HellishCat]

Stupid person asking a question here, if I had my dealership install OEM 3.09s say from direct connection or whatever, I would be able to keep my warranty right?

 

[NoScat]

Absolutely.

 

[HellishCat]

Absolutely.

I got 27.2mpg in full 700hp mode on multiple occasions driving from VA-NY and VA-TN. So I got the 2.62s thinking back to how easy it was to make my 315s turn to dust and figuring the Redeye will be a bigger monster so how could lower gearing not simply translate to CONSTANTLY spinning the tires.

 

[GOING TO HELL 19]

I got 27.2mpg in full 700hp mode on multiple occasions driving from VA-NY and VA-TN. So I got the 2.62s thinking back to how easy it was to make my 315s turn to dust and figuring the Redeye will be a bigger monster so how could lower gearing not simply translate to CONSTANTLY spinning the tires.

It's all about learning to drive the car, and of course some real good tires. But I don't race at the track.