Another Kablooey 727

That your old motor Andy? Looks familiar.

Drama Queens.

Shakes head.... walks away. That guy makes chevy owners look smart.

Any one who laughs and fist bumps over tearing up parts and making a mess like that is an idiot who I try to avoid. Just sayin'.

Still in gear? Jacks 4000# car up with old jack and crawls under it with no jack stands?

no bueno

Uncle Baloney........

Drunkle Tony.

It's sad how much of a hack that guy is.

That's what I was thinking, you have to be an idiot to crawl under a car on a floor jack without putting a jack stand under the car.

I wonder how long that sprag had been hurt, or if he did the damage on the first burnout in 1st gear where it seemed like he pedaled it and also shifted to second.

That's my worst nightmare with a non-LBA valve body. I don't do first gear burnouts but it still worries me.

Can a non-LBA valve body be replaced with an LBA valve body without any other changes, or is it best to pull the trans when you swap them?

I have never watched him but I will have to watch this one. I know Kristen and Cody from racing Drag Week.

I have abused a non LBA manual shift 727 in so many ways it is not even funny. Now that I know better I try to be smarter, by switching to a 904 haha.

I know turbo 400's can explode too but you definitely don't see it with the same frequency as 727's. 904's don't do it at all?

904 drums are smaller in diameter so the max speed at the outside of it during an overrun event is slower than the 727 drum is how people on here have described it when this topic comes up.

TH400 can blow themselves apart as well and not even under race conditions. My brother ballooned one real good years ago when it went into passing gear under full throttle. Bellhousing full of cracks and missing pieces and the middle of the case split horizontally upwards towards the trans tunnel so you could see straight thru it to the other side, It happened on a narrow two lane road in the middle of nowhere and some parts of the bellhousing shot out into a field and he never did find all of it.

the first thought i had when seeing that, after backing up, i always drove the car ahead at least 10 feet or so to set the sprague. [over running clutch ?]
i didn't see that on the video when it went boom. did i miss that, or am i just crazy in my thinking ?

This is a prime example of someone who didn't know how to build a 727 correctly to make sure it didn't fail after they worked on it
Aluminum or steel drums are your friend

400's like to blow up on the big end... Advantage Chrysler... LOL

As long as you use a OEM drum in a 727, this is the risk you take.

Useless Trashy Garbage with another unique video I won't click on... What's next? "Frame connectors" on a Mopar are bad? Nevermind, he already did that one.

listening to the guy it sounded like he saw he put it into manual low and shifted to second , at least he thought he did that .

I'm still trying to figure out how the trans shifted it self into park after it went boom with the shift linkage ripped off.

Probably dinged the roller clutch on the first burnout. Didn't sound like the RPMs were really up when it broke. She's lucky the stuff didn't get through the floor.

In 2023, this should not happen. It ain't hard to avoid. LBA VB helps and they work well now so why not. Otherwise, a billet drum. Get the OE grenade out of it.

I made a guy pull a 904 and bring it to me once. He had broken a rear, fixed it, and was driving the car around on the street. Everything seemed okay and it was going to the track. I insisted he pull it.

Half of the springs were mashed flat by the rollers when the rear broke. The rollers were loose in the assembly. The other half were still functioning enough to drive the car around. It would not have survived the first hit.

Maybe I'm strange but I don't find these people entertaining nor do I find the destruction of a 727 entertaining.

Nice.

Knowledge is lacking in today’s world, people wrenching on a car-trans and can’t tell a 9/16” wrench from a 1/2” then blame it on the front drum.

You need a high rpm engine to blow up an OEM 904 drum. It's a non issue.

How high is high RPM?
I'm getting ready to build a 1965 Valiant SB stroker turbo car with a 904 in it, I'll probably have Pro Trans build a 904 tranny for me, but it would be nice to know what RPM the 904 drums are sensitive to

I've never heard of it happening. But I also want to avoid breaking a trans on the starting line.

You should be able to swap a non LBA valve body with a LBA valve body with no other changes.

71Demon- thanks. I need to start collecting 727 parts, have seen too many of these and I'm worried about mine.

Crackedback.... LOL! good point, at least ours scatter when the car isn't going to end up in the wall.



That makes sense, the manual low burnouts seem like bad news, especially with that stock drum!

Maybe when parts scattered, the drum hit the shift linkage just right and pulled it?

A manual low burnout with a stock type valvebody will apply the low band so it technically should not hurt the sprag because the sprag isn't really holding the rear drum from spinning ... if the band is adjusted properly ...


With that in mind when the trans in manual low it is the furthest from being in park but the explosion probably ripped the park rod off the VB and with it pulled out of position into park the trans will go ...

as far as parts you need to be safe , it's really just 1 , but I would spend the extra and get 2 ...

Billet front drum is a must , and an A+A SUPER Sprag , it has more rollers and can't easily be rolled over , if at all.

The internet, youtube, etc. has brought about so many people who believe they have talent, are funny or have some entertainment value of some sort and need to put it out there for everyone to see. All these Roadkill, Last Stop Garage, Azz Monkey Garage etc. wannabes. This trans was probably rigged to do that for the video.

Did you see the hole in the floor and the trans fliud on the drivers side window ???? If it was rigged for that it would have had a blanket on it , only an idiot would rig something like that and then get in it and make it go boom.

World is full of idiots

Been racing my whole life since 16 and have never grenaded a torque flight. Yes, I have broken converters, front pump seals, lost second gear a couple of times but never had one explode. Just build them with good parts.

You can feel and hear a healthy sprag from a damaged one pretty easily by turning the driveshaft with your hands but if possible it's certainly a good idea to pull the trans.

I got my B&M LBA valve bodies back in 73 for pushbutton and the later. I tried the TA one for a year or so and damaged a sprag when I broke an axle, out it came and the old B&M went back in. A&A is going to make me one for my third car this year.

This method will certainly bite you in the a$$. Eventually.

There are a few failure modes - bad springs and rollers are one.

Awesome, thanks. I need to start ordering parts. I assume the higher the rpm that it lets go in 1st gear, the worse the shrapnel is!

Also agree, there is no way that was staged. And, at least Tony offered to help him rebuild his spare or use a trans he had in the shop.

Blowing up a 727 is kind of like shooting someone accidentally. A number of mistakes and broken rules have to happen first. But it happens,

Second gear burnouts. Take it out and look at it if something in the driveline breaks under power in low gear, regardless what kind of valve body is in it. Good front drum.

Miss one. Probably okay. Miss a few, better have a shield on it.

Broke sprag last September due to a worn out transmission case. Very fortunate I have a A&A aluminum drum, or it could have been catastrophic. Went right to the Rev limiter 6700. Dummy me tried it again on return road.
https://youtube.com/watch?v=WdgwaO7IK9I&si=EnSIkaIECMiOmarE

Driving it around, functioning and seeming to be okay is not a valid test.

Having half the springs smashed will certainly change how it feels when spinning the output shaft. But I'm not going to trust that one either. Take it out and look at it, or roll the dice.

Correct. The springs and rollers are only part of the equation. Propelling functioning and sounding on jack stands isn’t a test and driving seemingly ok isn’t either.

You said it not me.

I don't know. Like I wrote, I guess I'm strange. I'm also suspicious of most things internet and very tired of all the "car people" that have come out of the woodwork and found their way to the internet and tv. A great majority are not entertaining to ME. Fake drama, not funny as they seem to think they are, and just plain dumb. Maybe they did destroy a 727. That doesn't make it worthy of youtube or whatever. Hey, that's just ME and my opinion which is not worth a nickle.

I wish Wayne Carini did Mopars. I could watch him all day long.

The owners lack of basic wiring knowledge tells me everything I need to know. Accident on its way to happening.

I broke a case like that once. I was 18 and flying along manually shifting my moms fury and went from 2nd straight into reverse at about 50 mph, we drove the car like that for another year or so. I didn't know it was broke till I decided to take the trans apart after parting the car to see what the inside of an automatic trans looked like and when I flipped the case upside down the rear race, and part of the case, fell out onto the bench ...

Those bolt in sprags like you have there are only good for one thing , fixing a case where the outer race won't stay it , other than that complete waste of money because it won't stop what happened there the sprag rolling over.

Actually the biggest benefit of a bolt in ORC is to keep the cam tight in the case and keep the ramps, rollers and race parallel to the axis of the unit.
Another reason why the 904/998/999 units fail the orc much less, the cams are all riveted in.

Didn't break the case, no fluid leaking. case was just worn out in the sprag area from rebuilds and replacements over 20+ years. Several rearend failures, 8 3/4 then finally a dana 60. Probably over 2000 passes. Biggest thing was I had a an aluminum drum that prevented any catastrophic explosions.

I didn't watch the video, anything UT is involved is a cluster fork. I've done some pretty stupid stuff with a 727 when I was young and never exploded one. I do have a LBA trans brake and a steel drum in my current one.

I like Uncle Tony. I have to sigh when I see certain things. I don't know who placed the steel tools on the beautiful red paint on that Cobra kit car but I bet it was Tony. Hess not accustomed to working on beautifully painted cars. His flicking his cigarette but on to the ground made me sigh too. But he has fantastic knowledge that's easy to dismiss because of his appearance. His early videos on low budget engine/car setups and their proven unreliability- while good hearted miss the mark with most viewers.

U

Just watch an episode of Bad Chad on YouTube. His metalworking makes blacksmithing look hi tech. No offense to blacksmiths.

Uncle Tony is Formula 1 by comparison.

Kevin

Tony is a hack IMHO.

This is who I think of when I see Chad. LOL

Makes me happy with my choice of automatic...

Yea my trans broke!

I always get a kick out of that pic. And totally makes me miss the V-gate I had in the Charger!

That thing looks like it was made to remove fingers, love my pushbuttons.

Your'e holding it wrong if it removes a finger...

which "finger" does it remove ?