6G72 tranny - Page 2 - TurboDodge.Com - Turbo Dodge forum for Turbo Mopars, Shelbys, Daytona, SRT-4, PT Cruiser, Omni and more!

Ondonti · 07-10-2006, 03:24 PM

I am getting tired of everyone saying "are you gonna make a hybrid tranny"

I only know of 1 person who has a project (his project isnt finished yet) that would need that setup.
I dont enjoy seeing rare parts wasted on cars that dont need it.

mwinkle353 · 07-10-2006, 03:31 PM

You talking about yourself on that one Brent?

Seems like you're going for about 100lbft more torque than I could ever imagine from my setup.

But then again, mine would be groaning harder lower in the rpms.

Ondonti · 07-10-2006, 03:33 PM

Quote:

Originally Posted by mwinkle353

You talking about yourself on that one Brent?

Seems like you're going for about 100lbft more torque than I could ever imagine from my setup.

But then again, mine would be groaning harder lower in the rpms.

Im not talking about myself.

I dont think i will make much torque.

Boogieman142 · 07-10-2006, 10:12 PM

but i still like that extra bit of satisfaction knowing the tranny will hold up to whatever i want to put thru it

Reaper1 · 07-11-2006, 12:46 AM

You won't have any issues with the A543 gearset. Provded that the rest of the tranny is in good shape and you drive it with some respect, you should see good service out if it. I think I've heard of only a couple of times where a GEAR failed in an A523 on a TD. I've heard of only a few input shafts snapping. Mostly it's diffs or bearings. I said it in before, I'll say it again, there are VERY few people that can actually use the strength advantage of the A568 gearset(especially V6 guys). If you're THAT concerned about it, get them cryo treated or shot peened and then have the tranny put back together with good bearings and such.

Just an added thought, the A568 gears weigh a little more than the A543 gears, and this diff is significatnly heavier. That is more mass to get moving in the drivetrain, wihich equals more power loss and sloer transient repsonse times...just something to chew on...

Ondonti · 07-11-2006, 02:20 AM

Quote:

Originally Posted by Reaper1

You won't have any issues with the A543 gearset. Provded that the rest of the tranny is in good shape and you drive it with some respect, you should see good service out if it. I think I've heard of only a couple of times where a GEAR failed in an A523 on a TD. I've heard of only a few input shafts snapping. Mostly it's diffs or bearings. I said it in before, I'll say it again, there are VERY few people that can actually use the strength advantage of the A568 gearset(especially V6 guys). If you're THAT concerned about it, get them cryo treated or shot peened and then have the tranny put back together with good bearings and such.

Just an added thought, the A568 gears weigh a little more than the A543 gears, and this diff is significatnly heavier. That is more mass to get moving in the drivetrain, wihich equals more power loss and sloer transient repsonse times...just something to chew on...

But i thought all 150-200whp 3.0's need 568 gearsets or the tranny blows up.

Egodriver71 · **Stop making it more than what it is**

Quote:

Originally Posted by Boogieman142

but i still like that extra bit of satisfaction knowing the tranny will hold up to whatever i want to put thru it

A568 syncros grind off just as easily ast any of the others. That is the issue more of these trannies have than any other, except A525 differentials.

You will not break the gears or the differential in any of the `87up style trannies unless you are doing something stupid.

Pegleg burnouts kill any differential, even RWD. The teeth on the gears will hold anything over 500hp without issue. The syncros will hold it too once they are engaged. It is that missed shift that kills syncros,

not excessive horsepower or torque.

You will be fine, even turbocharged, with a stock A543. Best thing you can do to help its life is balance the front end to equalize weight between the front tires and install even the cheapest of limited slip devices. And the best thing to do is learn how to shift so that you do not grind off the syncro dog ears on the gears.

Tom

Reaper1 · 07-11-2006, 11:43 AM

To prove this point I have in my posession a complete 1992 A568 gearset that not a singel gear or synchro is good in due to a BAD driver! There are hardly any dog teeth left on #2!!!

Boogieman142 · 07-11-2006, 08:15 PM

well, my 543 had the teeth half missing so i decided to put the 568s in it

Reaper1 · 07-11-2006, 10:06 PM

I can garranty you that it was NOT due to too much power! Maybe worn out parts, not enough lube, whatever. Do what you like, but there's NO advantage to ruining a rare tranny just for the sake of having its internals just to say you have them! I sure wish people would quit acting like there is and spreading false information. Not just in the 3.0 community bu in the TD world as well. People act like anything but an A555/A568 is crap and will blow apart. This is complete BS. I hope that the issue that casued the tteth to be missing in your origional tranny was fixed...otherwise you're going to make junk out of some rare parts!

Ondonti · 07-11-2006, 10:48 PM

Quote:

Originally Posted by Boogieman142

well, my 543 had the teeth half missing so i decided to put the 568s in it

Im pretty sure we already had your real reason

Quote:

Originally Posted by Boogieman142

but i still like that extra bit of satisfaction knowing the tranny will hold up to whatever i want to put thru it

Ondonti · 07-11-2006, 10:54 PM

I myself have found the only reason a 568 gearset would be useful, is if I need to instal a lower final drive with the taler 568 gears in order to prevent myself from having to shift in to 5th gear.

Technically even this is not an issue since with a 7000 rpm limit, 4th gear in my 3.5 543 will go 145mph, and if that was a problem, I could always go, 7200 rpms, or whatever.

after looking at some ratios just now, its actually a bad idea to use 568 gears unless I start stripping teeth.

No one is going to build a 3.0 that needs a568 "gearing" (not talking about strength) since if you build a car that fast, you arent going to have a 6000 rpm limit, and since you dont, the taller gearing will kill you.

Wormser · 07-13-2006, 01:33 PM

So will a a604 fit in a 96 grand caravan with no problems? Also is the a604 a 3 speed or 4 speed?

Egodriver71 · 07-13-2006, 01:41 PM

A604 is the 4spd Ultradrive transmission. It is the same designation whether it was behind a 2.4L, 2.5L, 2.7L, 3.0L, 3.3L, 3.5L or 3.8L in the transverse FWD applications.

A670 is the 3spd transmission. It is an A413 in a case to bolt to the 3.0L.

Tom

Ondonti · 07-13-2006, 05:53 PM

Quote:

Originally Posted by Wormser

So will a a604 fit in a 96 grand caravan with no problems? Also is the a604 a 3 speed or 4 speed?

Can we have a little more information what you are doing? The stock tranny should be a 4 speed ultradrive, but since you probably have a 3.3 it has a different number designation.