Trans fluid?

[70bigblockdodge]

Your torqueflight wasn’t designed for type F, and it still doesn’t need it to work great for years

My 440 was not designed to work with .600" lift camshaft either but it works.

There are no trans failures from type F, dexron, or ATF+4, it all works fine. Some lubricate better. Pick your poison. All this bickering and they still keep on working

So what should I use?
You need to stop listening to wives tales, and go read some engineering manuals.
Stock 4 plate clutches in a 727 will handle 500hp. A stock 2 ND gear band will not stay in adjustment (wearing badly) in 1/2 a season of racing. That's why Hemi and 440hp cars came with a wider solid band. It's not a failure rate for the band, it is why put fluid in that does not make the bands life any easier. Type F will make it grab the drum quicker/ faster/ harder, with less slippage.
Your high gear clutch is crapping out due to line pressure not fluid type. The type F you so much want to berate will actually help in this instance.
Yes it all works. 85w140 works to quite loose rod bearing clearances, doesn't mean it is correct.
F works period

 

[413]

The wide band is for the 5 disc front drum in the Hemi trans. Ever pick one up, they weight plenty. Same for the 5:1 band lever, it all for that heavy drum. A 440 HP didn’t come with the wide band, but the 6bbl did.

You obviously don’t know much about 727’s other than what you read online. If you think second gear is the problem that. You need to upgrade The valve body, or find a different trans shop.

I just stated to use you favorite fluid, that’s not what’s failing your trans. So the opposite is true, the fluid isn’t helping it any Perceived problems either.
My hi gear clutch is fine, but the overall TF weak link is the hi gear clutch.

70 BBdog If you want to be nasty then go beat on the Family or the dog and leave me alone. In done with your **** Attitude and lack of knowledge.

 

[70bigblockdodge]

The wide band is for the 5 disc front drum in the Hemi trans. Ever pick one up, they weight plenty. Same for the 5:1 band lever, it all for that heavy drum. A 440 HP didn’t come with the wide band, but the 6bbl did.

You obviously don’t know much about 727’s other than what you read online. If you think second gear is the problem that. You need to upgrade The valve body, or find a different trans shop.

I just stated to use you favorite fluid, that’s not what’s failing your trans. So the opposite is true, the fluid isn’t helping it any Perceived problems either.
My hi gear clutch is fine, but the overall TF weak link is the hi gear clutch.

70 BBdog If you want to be nasty then go beat on the Family or the dog and leave me alone. In done with your **** Attitude and lack of knowledge.

Yep, you changed my mind type F is awful stuff, I don't know why, but just awful.

 

[68plymouth383]

You sound like a ***** who whines and moans cause he didn't get the assembly to buy into your stupidity.

The wide band is for the 5 disc front drum in the Hemi trans. Ever pick one up, they weight plenty. Same for the 5:1 band lever, it all for that heavy drum. A 440 HP didn’t come with the wide band, but the 6bbl did.

You obviously don’t know much about 727’s other than what you read online. If you think second gear is the problem that. You need to upgrade The valve body, or find a different trans shop.

I just stated to use you favorite fluid, that’s not what’s failing your trans. So the opposite is true, the fluid isn’t helping it any Perceived problems either.
My hi gear clutch is fine, but the overall TF weak link is the hi gear clutch.

70 BBdog If you want to be nasty then go beat on the Family or the dog and leave me alone. In done with your **** Attitude and lack of knowledge.

 

[cantflip]

@bluefury361 just dump whatever is the cheapest on the shelf and be willing to change it once in a while... worked on all our other ones.

Type F has been a long time solution for many, and I see logic in Dave's argument (no personal drag racing experience to support him), I hear lots of guys with more transmission experience than me recommend various synthetics (413). I'm half tempted to try my stock of 722.6 fluid (NAG1), which was claimed to be backward compatible with DEX II when it came out, on my next one... but I don't want to marry into an expensive, not so readily available fluid. If I sell it at Carlisle, problem solved... otherwise at least one of my cars will get be my guinea pig.

 

[70bigblockdodge]

bluefury361 just dump whatever is the cheapest on the shelf and be willing to change it once in a while... worked on all our other ones

Best advice yet, cheap is good.

 

[70bigblockdodge]

You sound like a ***** who whines and moans cause he didn't get the assembly to buy into your stupidity.

I am a truck driver. Not happy unless whining about something. LOL

 

[commando1]

Walmart. Seriously.
Super Tech gets consistently good reviews.

Like I said.

 

[73Coupe]

"Fluid" discussions always bring out the best in us....

Keith, the 727 Specialist who supplied my rebuilt 727 w/ his shift kit, recommended ATF+4. So that's what I be using. It works fine...no issues yet. My only complaint about the 727 is converter drainback which causes slow shifts when cold. But that's a design thing....

I will repost here when the trans explodes due to fault of the fluid....

 

[bronze turbine]

First off, I'm no expert, but here are some of my experiences. My Chryslers with Torqueflite 727's always shifted great with the Dexron. My brother put a shift kit in one, and the maker of the shift kit recommended Type F for faster shifts. They also recommended disconnecting the shift pressure lever and fastening it in the fully down position, which would basically make every shift as quick as possible. I tried putting Type F in a GM transmission one time and while it did shift OK, it made the transmission bang horribly when shifting into gear from park or neutral which probably didn't do the transmission any good. ATF +4 is recommended for ALL Chrysler transmissions of any year, but I'VE HEARD (again, I'm no expert) that it is incompatible with Dexron or Type F and should NEVER be mixed. That's just my 2 cents.

 

[300C]

Been using F in my '57 300C, '68 300, and former 60 300F, for years.....never an issue. (I don't beat the cars.....) It also firmed up the shifting, esp. on the C. To each his own? Maybe?

 

[Nadir Point]

You guys must be bunch of old farts like me. But seriously, if you want the best fluid currently available for your old 727, DexVI is the way to go. The semi-syn basestock alone makes it far superior to the older conventional fluids. Put a shift kit or a better valvebody in it if you want firmer shifts.

 

[cbarge]

The Boab has el cheapo Dexron/Mercon fluid.
Why?
I can get it anywhere when traveling 1500+ miles in one weekend!!

It all boils down to the overall condition of the trans.
If and when it gets rebuilt,the person rebuilding it should know there ****.
I had other 727's rebuilt and used ATF+4 and the shift quality was...meh.
What is also important is the proper adjustment of the bands and kickdown lever.
As most of you know,the kickdown rod regulates line pressure. That is key.
I dont care if you put type F or ATF+4 in it,if the kickdown is not adjusted properly,the trans will not work the way it should.

The BoaB's 727 is well thought out;part throttle 3-2 kickdown installed,shift kit installed and one step up from stock stall convertor. Plus the line pressure has been turned up a wee bit more than stock.

There are members here that either rode or driven the BoaB that can attest the performance of her transmission--using cheap tranny fluid.

 

[commando1]

I can get it anywhere when traveling 1500+ miles in one weekend!!

Thank you. Once again, it's a Canadian that uses common sense.