C4 ffford question

goinbroke2 · 12-11-2023, 07:30 PM

I have a truck c4 (pan fill not case fill) and I want to order a converter, question is, are all pan filled c4’s 26 spline or did they vary between 24 and 26 depending on year?(like the case filled ones do)
I have a 3000 stall in it now, but that was put in, in 1994 or so and I don’t remember what I installed. (Thinking 26 but I’m not ready to rip it apart yet)

Thanks

1347 · 12-11-2023, 08:07 PM

In 1970, Ford went from a 24 spline to a 26 spline. Do you know what year the trans is?

jmantle · 12-11-2023, 09:18 PM

24 spline 64 to 69 transmissions have a vent tube attached to the rear servo, 70 and up have the vent on top of the extension housing. This works except for some 70 transmissions, usually just Falcon ones.

goinbroke2 · 12-11-2023, 11:57 PM

I don't know the year but it would be in the 70's I'm pretty sure. Sounds like it is 26 spline then and I think that's what I remember too.

Thanks guys, I'll check the other c4 I have too, I think it's a 1980 case fill buried somewhere under a snow covered tarp, lol.

12-11-2023, 07:30 PM	#1
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 750 Likes: 724 Liked 201 Times in 76 Posts	C4 ffford question I have a truck c4 (pan fill not case fill) and I want to order a converter, question is, are all pan filled c4’s 26 spline or did they vary between 24 and 26 depending on year?(like the case filled ones do) I have a 3000 stall in it now, but that was put in, in 1994 or so and I don’t remember what I installed. (Thinking 26 but I’m not ready to rip it apart yet) Thanks

12-11-2023, 08:07 PM	#2
1347 Member Join Date: Aug 2007 Location: Monroe Twp NJ Posts: 456 Likes: 942 Liked 934 Times in 243 Posts	Re: C4 ffford question In 1970, Ford went from a 24 spline to a 26 spline. Do you know what year the trans is? __________________ Duane Hoven 1342 SS/GT

12-11-2023, 09:18 PM	#3
jmantle Member Join Date: Feb 2008 Location: Black Creek, BC Canada Posts: 312 Likes: 62 Liked 137 Times in 67 Posts	Re: C4 ffford question 24 spline 64 to 69 transmissions have a vent tube attached to the rear servo, 70 and up have the vent on top of the extension housing. This works except for some 70 transmissions, usually just Falcon ones. __________________ Jim Mantle V/SA 6632

12-11-2023, 11:57 PM	#4
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 750 Likes: 724 Liked 201 Times in 76 Posts	Re: C4 ffford question I don't know the year but it would be in the 70's I'm pretty sure. Sounds like it is 26 spline then and I think that's what I remember too. Thanks guys, I'll check the other c4 I have too, I think it's a 1980 case fill buried somewhere under a snow covered tarp, lol.