440 Dart Carnage ! Bye Bye 727

https://youtu.be/nMexQELrHAw

Good Job. This is the 'peeling the onion' approach to finding the weakest part in the search for higher performance. More money and more muscular hardware is the solution but You know that. Good looking car. Keep Going!

Not good and it APPEARS the Dana was stock but still didn't make it yet my 8 3/4's been in the 9's and low 1.3 60 ft's for many years........... Hope it's an easy fix for you guys...........

Hey Thumper, what has been done to your 8-3/4 to make it live??
Thinking about ours, nodular, back brace, etc.?


Thanks, Joe

Just back-braced for around 15 years w/stock caps and 30 spline Dutchman axles but now I run the Nodular Dr.Diff 3 rd member w/forged caps and stepped up to his 35 spline axles..........1.33 best 60 ft. so far footin to 2200 rpm's then stomp..........

What "broke" on a Dana??

Ring gear...............

Where does it say he broke a Dana? It says bye bye 727.

The video shows the broken ring gear,
which helped to take out the trans.

I'd think the gear box took out the rear end. All I saw was a chipped tooth on the gear.

I would bet on the rear taking out the trans. Sudden rear lockup for an instant can strip the planetary splines, take out the sprag?

In the vid at the end it shows broken ring gears..........

Doh, guess I should watch the whole thing! lol

yup sprag was rolled

yeah we put used gears in the dana and didn't notice any stress fractures or cracks but they went. they were set up by a diff shop with a good rep. sometimes [censored] happens i guess. thats racing. she already back up and running. this was two weeks before MATS. we thrashed and made the race.

thank you ! happens in racing ! we'll keep after it !

Limit your track visits is the best insurance

Knock on wood I hold my breath every time my son leaves go of his transbrake in his Duster. We both know with 1.30 sixty foots and weekly Racing his 8 3/4 is being pushed.

That's what I do Jay

Glad you got it fixed Moparman619. Car sounds good.

John what spline axles do you run? We were twisting our 30 spline stuff pretty bad with our W5 mill.

two things to consider when thinking about a rear end horsepower and weight..

LOL, I was thinking the same thing.

Fact is I make more power and am faster that the above car from what I've seen in other videos and HE broke not me so whatever gets your goat guys and what used to bug me, now makes me laugh as my junk has outlasted LOTS of guys here and elsewhere............

How many 9 sec passes have you made in 15 years Dom?

In all fairness the car in this video isn’t running 9’s either

I don't keep track as I'm not a Pro drag racer or bracket guy but more than some slower cars who kill their 8 3/4's in short order and again, who cares and all good on my end cos I KNOW what I have and I've tested 100+ carbs on my car and drive it like at the track to properly verify afr's and power but must say, my motors tired and time for a freshening............

I don't want to sound like a jerk but if you have a car that can run in the 9's and use a transbrake at a track and the car hooks up, a 8 3/4" rear end will brake.

I'll even through out a number, whithin 15-20 launches.

Foot driving will keep them alive, Brett Miller is proof of that.

Totally agree and probably my saving grace as well as Bret and other FAST azz cars and a 9" will be the rear of choice when the time comes to step up............

Oh man that's ruff. Bummer your stuff went 'clunk'. Hope the fix is quick and good in time for your next run. That dana looked like an old hockey player missing all those teeth.

The worst beating happens in the first foot or two. I would have to think a very efficient converter behind a high torque bigblock is the toughest on the ring and pinion, if you don't use a brake and it hooks hard.

I might be wrong but looking at the ring gear, it looks like trans locked up first and that broke the ring gear.

hahahah yes we're back together now !

the blue duster we run still has an 8 3/4 in it

I've been running my 8 3/4 with a alum center
for years.. the car is light.. leave the line
at 5600 rpm shift at 8200.. I broke a totally
stock one when a cap broke(thats when I changed
to the alum center.. weight is the killer
EDIT
every launch running a trans brake

Keep it off the track, and a 8.75 will live forever.... here’s your proof!

8 3/4 have their places.. let's face it if you're making a fair amount of power in a heavy car it won't last very long on a decent track..💣

BS,Beat the hell out of em on the street AND the track in a slo azz mid 9 second car in the low 1.3 60's and IT will live for many, many happy years.................

Not worth my time.. I guess he built a tank and
the 8 3/4 broke.. my car is light and its holding
up fine with a back brace and the alum center

Posts like this could go on forever and are a waste of time. Some cars sit in the garage for years without hitting the tracks so unless you have some numbers on passes, et’s, weight, etc etc etc it’s “fake news”.

You got my numbers.. and your right.. its a waste
of time

No doubt about being light helping and of course foot-breaking helps a BUNCH............

It is funny how some go rounds for years and some break in the burnout box first time out......


I once saw a Falcon do a burnout and spit the pion and driveshaft from his 9" Ford twenty feet past the starting line. So I suppose all big pion 9" Ford's are junk all so?

I ran a 8.750 for a lot of years and everyone said that it won't hold and will break,,one year at Norwalk in the middle of eliminations it said good bye and spit a tooth out of the rear of the housing,, ruined my day, but they were right, eventually they will break, just a matter of when.

Myself.. I have never foot braked.. all the hits
on my car have off the trans brake since day 1

look what i started. lol

NAA.. you didnt start anything.. its all good

This one?

I've seen that mode of failure many times over the years. Nine-inchers love to do that.

Racers can break ANYTHING. Back when my Daytona was running 8.60's I lite both stage lights at Norwalk, floored it, and left go of the trans-brake button. The 9 inch rearend broke and never even moved out of the stage beems. I'm gonna say I had about 1100 runs on those gears and they were in the car when I bought it.

Most of the 9" I've seen do that didn't have a nodular housing in it.

I had a 31 spline Ford 9" in my 440 Demon. MILD engine.
I took out 5-6 rear ends before I gave up.

WAR cases, nodular cases, new gears every time, set up buy 4 different guys.

No Ford 9" rears for me.

I know they work for lots of guys. I'll pass though...

A good friend of mine raced a 64 300 K for 45 years, ran 11.0s @ 4100 lbs and only broke the 8 3/4 one time in the thirty years I knew him.

I ran the same 4:56 powerlock 8.75, with 4 wheel line locs and T/A 5400 flash at 3150 lbs, for 18 years and over 4,000 passes. I never tried it with a trans brake, too scared.

IT'S GROUNDHOG DAY!!!!!

Now let's talk about cast iron heads. Lol

I went 9.80's with them 35 years ago with 906's heads and pop-up pistons but I had a Dana rearend in the car so does that count?

It's not over until the fat lady sings !!!!!

https://youtu.be/mfQsngNoV7I

Done

Hahahahahahaaha…. How did I know you would have one for that.... LOL