I think the transmission bought the farm...

"TheElephant" (426cubicinches) 02/18/2015 at 21:09 • Filed to: None

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Help me diagnose this, Oppo:

The Challenger runs the good old NAG1 5-speed auto. It's really taken a tremendous amount of abuse. It has a high stall torque converter, a shift kit and upgraded solenoids. I routinely do massive burnouts and other stupid things. It never misses a beat.

Well, it never missed a beat.

When using the auto-stick, you're not supposed to manually engage fifth gear at full power. Something about it not being able to take the pow-ahhhhh.

I've had instances in the past where I have done that, and the result was the car "falling out of gear". I would have to stop, shut it off and restart it and everything would be just fine.

But then, the other night, as I was doing huge smokey burnouts under the full moon with the dumps open, it happened: the engine was spinning about 5,500; smoke was billowing from the car and then WAHHHHHHHH crack bang pop as it slammed into the fuel stop at 6,750.

The transmission popped out of gear. And then kind of smelled a little... toasty. No CEL, no warning lights, nothing abnormal besides the smell and the inability to go... anywhere.

A quick restart and she fired right, plunked into gear and trundled home. And I beat on it during the drive home, too (I mean, hey, if it's already shot may as well enjoy the ride down).

No leaks in the last couple days while she's been parked, and I have pulled her out and wandered around with no problems.

My question is this: do I chalk this up to an anomaly, or do I sack up and drop a Stage 4 Arrington unit in there and avoid the risk of being stranded on the side of the road?

Sportwägen, Driver Of The Red Sportwagen > TheElephant 02/18/2015 at 21:15

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*cough* MANUAL *cough*

joking aside, I vote you get a Lenco...

505Turbeaux > TheElephant 02/18/2015 at 21:16

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bone up on your AAA, grab that stage 4, and fucking hoon the everloving piss out of it until she blows. And take some video for fun

jkm7680 > TheElephant 02/18/2015 at 21:17

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Yup, something is fucked.

Arch Duke Maxyenko, Shit Talk Extraordinaire > TheElephant 02/18/2015 at 21:19

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Yeah, you killed it, time for the TR6060.

Ramblin Rover - The Vivisector of Solihull > TheElephant 02/18/2015 at 21:26

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Egad, sir. Egad. If your trans isn't boned it'd be the greatest Mopar auto that ever lived.

TheElephant > 505Turbeaux 02/18/2015 at 21:31

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Oh, there is (and will be) video .

TheElephant > Arch Duke Maxyenko, Shit Talk Extraordinaire 02/18/2015 at 21:31

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How do you know that? It runs fine 99.9% of the time. What makes you think it bought the farm?

aberson Bresident of the FullyAssed Committe > TheElephant 02/18/2015 at 21:34

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i would be amazed if my transmissions could buy farms

TheElephant > aberson Bresident of the FullyAssed Committe 02/18/2015 at 21:36

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We'd be rich! Rich I say!

Arch Duke Maxyenko, Shit Talk Extraordinaire > TheElephant 02/18/2015 at 21:37

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I can't say, but a TR6060 is the only cure.

TheElephant > Arch Duke Maxyenko, Shit Talk Extraordinaire 02/18/2015 at 21:40

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Do you know how great it is to have a beefy auto backing up this motor? Rush hour traffic doesn't bother me; I can take it out to dinner and let the little lady drive it home if I drink too much; burnouts are two pedal presses away...

Old-Busted-Hotness > TheElephant 02/19/2015 at 05:37

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You're not doing it any favors. It's pretty hard to kill a NAG1, but it sounds like you're trying.

I'd go for the upgrade.

Tohru > TheElephant 02/21/2015 at 13:51

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If there's one thing Chrysler has always been terrible at, it's transmissions. My Dad had a mid-70's D100 with a beast of a 360 in it and he'd routinely have to replace the A-727 automatic in it. His record was replacing the transmission twice in a weekend - Drive went out on Friday, got a used one from the salvage yard, put it in Saturday morning, 1st went out of it within a couple hours, returned it under warranty for a different one, put it in Sunday.

I don't suppose going for something like a TCI SuperStreetfighter 700R4 is an option?

Tohru > TheElephant 02/21/2015 at 13:51

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... but Chrysler's never made a beefy automatic...

TheElephant > Tohru 02/21/2015 at 14:09

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Eh... the NAG1 is used in some high-torque AMG units and is pretty dependable up to about 750 HP with the right upgrades.

JGrabowMSt > Tohru 02/21/2015 at 14:33

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NAG1 isn't actually a Chrysler unit. 722.6 Merc trans.

JGrabowMSt > TheElephant 02/21/2015 at 14:34

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While this is true, I'm still eventually going to drop my NAG1 for a TR6060...

Tohru > JGrabowMSt 02/21/2015 at 14:35

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That technically doesn't disprove my statement.

TheElephant > JGrabowMSt 02/21/2015 at 14:37

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I just can't bring myself to do it. To me, the American Muscle Car is a big ass, cammed up motor putting ludicrous power to the ground through a lazy, stout four or five speed slush box.

I think of it like a Heavy Weight fighter - the George Foreman of cars, if you will.