Any transmission techs on the board ?
I would like to pick someones brain on a soft 1-2 shift on a C4
I am changing the vac mod and doing a trans service
I am doing a trans service and what to see if there is anything
I should do while the pan is off.

 

Doesn't the Ford C4 use a servo/piston for the 1-2 shift? Superior makes a heavier apply servo for it as does someone else I think. From my memory it uses the forward clutch pack for 1st, then forward+band for 2nd, and forward and direct for 3rd. It's a very basic design just like the TH350 (what it's similar to somewhat)

Do you have a built valve body in it? Manual...automatic...reverse manual?

 

No - stock trans - 81k - I got a new vac mod to put in - is adjustable
I plan on dropping the pan Tues night
While I was in there .....??
It has an soft 1-2 shift - but doesnt do it all the time.
Most of the time it is slight, easy take offs.
On more aggressive take offs - most of the time shifts OK - but not always.
Any suggestions.
Thanks for the repsonse Hit

 

Oh wow a stock C4! LOL I hardly ever seen one not behind a Fox framed Ford now that's fully built.

I think that vac modulator should allow you to set shifts...

If you're feeling up to it, a TransGo is only like $55 for the C4. http://cgi.ebay.com/ws/eBayISAPI.dll...sPageName=WDVW

That will get your shifts as firm as you want them.

Also it could be the band is getting old and worn...

 

I wanted to do something - if poss with out blowning it apart

Yep bone stock

 

Oh well all you'd do is drop the valve body and swap a few springs and open the feed holes in the seperator plate. Valve bodies on 3 speeds are laughablly simple. Tranny stays in the vehicle so there's not a whole lot of tearing down. I believe that the TransGo has some way to raise WOT shift points...at least in their AOD kits they have that.

Where are ya located?

 

Thanks Hit
I am West of Chicago in the burbs.
I will check into the transgo kit - kinda of what I was thinking...

 

Oh well you're a bit far for me to assist in the install! LOL

Lemme know if you have any more problems.