need C6 help, advice

[66sevets]

I bought this 460 C6 Fairlane on eBay almost a year ago. I took it to the track for the first time yesterday. I drove it around the pits to warm it up and play with the line loc and trans brake buttons. Everything seemed fine so I to it for a run. Went off the trans brake everything went fine shifting at 6000 and ran 11.30 at 116. Turning off and heading up the return road I noticed the trans felt like it was slipping, by the time I got to the ticket booth I had nothing but park. Seems strange to me any ideas?

[Falcon67]

Nothing sounds like I'd start with a pump issue.  No line pressure = nothing works.  The direct clutch (IIRC) is engaged in all forward gears so if you have any line pressure you should at least have one gear.  Also lose valve body, loss of fluid and such.  Park is strictly a mechanical linkage and does not depend on hydraulics. 

[BigBlueIron]

Have you tried it since? Could be crap in the filter happened to me awhile back on a C6. Worked fine for few miles then nothing but park next day same thing. Cleaned the filter and pan all has been well for the last 1100 miles. Truck had sat quite awhile.

[66sevets]

I haven't tried it yet today its still in the trailer, it would be nice if it went into gear I need to get it out and in the garage! thanks for the things to check

[gt350hr]

  +1 on checking the filter first , had it happen to me too.

[e philpott]

Check for Filter fell off or loose bolts on the Filter and Valve Body assembly

[66sevets]

moved some stuff around so I could back my trailer to the garage and push the car in, started it up and it went right into gear and backed out on its own. Put it into first and went right in. need to pull the pan.

[Falcon67]

If there is a "deep"pan on it, make sure it has a matching filter.  Not sure on C6 but we have those available for a C4.  That said, in all my years of building and racing automatics I have never had 1) filter come loose or 2) filter "clog".  Good that it moves on it's own, pull the pan and see whats up.  Don't be afraid to call Broader, he's a good vendor and could give you some specific things to look at.

[thatdarncat]

Ford had a factory deep C6 pan on the ‘70’s 4x4’s, and used a special filter with a hole & grommet and a push in extension. I use these myself. Chris makes a good point, I’ve seen people on the internet claim they don’t use the special filter & extension with their deep pan C6, it would be a good thing to check if you have a deep pan. Here’s a picture of the filter & extension. The extension is obsolete from Ford, but there are new replacement versions available.

[427mach1]

If there is a "deep"pan on it, make sure it has a matching filter.  Not sure on C6 but we have those available for a C4. 

Deep pans are available for the C-6.  I installed a TCI deep pan on mine and it came with a new filter, filter extension tube, and gasket.  A quick check on Summit Racing and it appears that all the deep C-6 pans come with the extension tube.

[66sevets]

It has a deep pan on it, need to pull it and see what's inside but it will have to wait. Nostalgia drags this weekend at the local track, going with some gasser friends. Spent the day switching cars in the trailer and getting ready. Thanks for the advice I know where to start looking now!

[manofmerc]

All good responses about pulling the pan .But before doing why not check your pressures ? You will need a gauge designed for such a job .I mean one that is designed for the high pressures a transmission has .The fitting I use is located on the drivers side right above the pan I believe it takes a 3/8" socket .Move your shifter from 1-p that will tell you where you are losing pressure .Nothing wrong with pulling the pan beforehand .But if you have to refill with fresh fluid and you have low pressures most likely your transmission has to come out any way .Just trying to save you some $$$$.Doug

[hbstang]

i had a similar problem,on a car that sat for 10 years.you could get 5-6 miles down the road perfectly and then nothing.when i dropped the pan the filter was packed full of what looked like spider webs!it worked perfect after cleaning it.by the way it was a 70 AMX !
nice fairlane ,and if dont want to fix it just sell it to me!!!!!