high performance to no perforance 125 miles.

[cathynkeith]

Well I lost reverse and first gear, it never shifted right, even manual shifting I had to back off the gas to let it shift.
While calibrating the dakota digital speedometer, I ran 25 miles on the interstate at 70-115 (115 is top with the 4.11 gears and 6k rev limiter does it too easy) When I stopped I noticed it would take off in second, would not let me shift it down either and there was no reverse, removed the pan today (pics attached) small shaving in bottom of pan, but I think this is normal?
anyway will have to call art carr monday, I hate to pull it out but I see that comming soon. They are 4-5 hours away from me so I think I will just take it to them.
Should get better service being in their face.

I had very little vacumme, but should it not shift manual correctly? also could not vacuume "burn" it up? I shifted 1,2,3 real fast on normal take off. I do not have the kickdown installed (550hp, 4.11 gears who need passing gear). The converter is a 2800 rpm stall but when hot it seems to slip way abouve 2800.

[cathynkeith]

forgot the pics

[averagef250]

Almost sounds like time for a 4 speed! Sorry to hear you're having so much trouble with the tranny.

[390Nut]

Metal shavings inside an engine or tranny are never normal, nor are they a good thing. Tiny specs showing up in the filter of an engine after run-in IS normal, hence the reason why you change the filter and oil after initial run-in (BEFORE it's driven) and again within a few hundred miles.

Those look a lot bigger than small flakes or specks. Got something seriously wrong going on in that tranny.

[cathynkeith]

I'm thinking of getting one of these.

Art Carr said they do not make an overdrive trans that can hold up to the motor, if I can I will return the art carr or sell it asis.

ever heard of these?
http://www.transmissioncenter.net/aode. ... 0Dominator

[Ranchero50]

Call Lentech or performance automatic for a built AOD. The Lentech has a switch for the overdrive and they work really well (got to drive one of them in a 10 second '87 mustang). Lentech did a lot of research to make the AOD survive. The PA setups are supposed to handle a lot of power too. There C4 setup is bulletproof.

Jamie

[68F250]

I hate to say it but looking at the bottom of your pan says the tranny is toast.

Two more things, low vacuum and no kickdown linkage both screw up a tranny. The kickdown boosts the line pressure so it don't slip and they should have given you a modulator calibrated for lower vacuum.

[rjewkes]

that is what i've been told the kickdown help with then shifting plus the passing gear.

[Jake11]

Art carr, huh?

[71 LONG BED]

...Art Carr said they do not make an overdrive trans that can hold up to the motor...

Sounds like they didn't make a 3 speed that can hold up to the motor either.

[averagef250]

This may be completely off topic, but having a few friends in the transmission and gear industry as well as tinkering with them myself quite a bit, I've noticed a huge trend towards big tranny shops sending a lot of junk out the door.

There's a big tranny builder here in the northwest that the vast majority of chain and independant tranny shops get there reman trannies from. This shop does OK on the real common stuff, but really scores low in the pickup manual transmission department. I personally know guys that are on thier 5th warranty NV4500 in a year. They use chinese parts and unskilled labor and I really think that some transmissions they send out the door were just bought as cores and powerwashed.

To give an idea how bad it is around here, I have two good friends, one owning a manual transmission and gear shop and the other owning a performance diesel shop and both of them are coming to me, the backyard transmission tinkerer, to build thier ZF's, M5R2's and NV4500's. They tell me "yours haven't broke yet, which is a h*ll of a lot more than can be said for alltrans". It may sound like a shady deal for a transmission shop to farm out his ZF's and NV4500's to me, but he doesn't have the time to do them himself and he can't afford to keep using the big guys garbage.

Another sad side note is I can track down american and japanese transmission parts and pay full retail price for them and get paid good for my labor and still beat the prices of the big guys that are sending out junk.

My best suggestion is find a real good local transmission builder. You might get some real good leads by asking around at the local dragstrip. Transmissions are very simple creatures. There's nothing magic in an AOD or C-6 that makes it so you have to buy one from a huge name company, the local guy that's been building them in his garage for the last 40 years can build the same tranny and you'll probably get better service if it breaks.

[cathynkeith]

I picking up one of theses today, shop is 75 miles from me, they say they stand behind it 100%, tech there drives a blown bb 78 ford swb, runs 9's with this transmission also runs it in his 77 dd, 450hp 351 lwb.
http://www.transmissioncenter.net/aode. ... 0Dominator
I will work with art carr to fix the c-6 and use it in something else....nothing like haveing a $1500.00 transmission sitting around.

[19674x4]

i got two words for ya:


AUTOMATICS SUCK

They can't handle torque, power and fast shifting, steal power and drop mpg's. i don't care if they are "bullit proof" The only real tranny for hi-po engines is a manual. get a 4-speed in that puppy and all your troubles will be gone

just my 2cents

[BobbyFord]

i got two words for ya:


AUTOMATICS SUCK

They can't handle torque, power and fast shifting, steal power and drop mpg's. i don't care if they are "bullit proof" The only real tranny for hi-po engines is a manual. get a 4-speed in that puppy and all your troubles will be gone

just my 2cents

I have to disagree with you about autos not being to handle power or torque. I know of guys that are running 500-800 HP through a C4.

You could by a book, an overhaul kit and enough tools to overhaul a C6 for about $350.
Probably one of the easiest transmissions there is to overhaul.

[averagef250]

Easy is a relative term. Most are scare petrified to open up a transmission. If people only new all you need is a clean bench, a solvent washer and a few snap ring pliers transmission shops would be out of business.

You don't need a manual. Assembly is the exact reverse of disassembly. If something's really screwed up, you'll notice it. Buy another core C-6 for $20 and start over.

You can rebuild and screw up a C-6 atleast several times by yourself for less than buying a super dooper race ready unit that's not much different from a stock one. Atleast the parts to make it fully race ready don't cost anything. Buying an expensive name brand transmission, most of your money is going towards advertising overhead, not into the quality of parts in the tranny.

I put a '68 TH400 together when I was 15 for next to nothing that held up for several years behind several high horse engines and a 3000 stall. It would darn near snap your neck each shift with slicks and break street tires loose. The tranny would still cost less than $200 to duplicate today plus the cost of the converter. I buy stall converters used for peanuts.

When you build an auto for racing you actually remove half the parts inside. You end up with a good pile of leftovers that make you wonder how it even works when in reality, you're just simplifying all the crap the factory put in there to make the shifts smooth.