The Ford Barn

fordor41 · 09-11-2022, 10:46 AM

So after grenading our 1960 fordomatic , we're thinking of changing to a C-4. Adapter kits to a Y-block are available. so question is, from what I can find C-4's were used from '64-'81 in 6 cyl's and SBF. Is there a difference between a 6 cyl C-4 and a SBF C-4? bellhousing bolt pattern or strenght of the trans.

cadillac512 · 09-11-2022, 11:30 AM

Both. The c4 from the 144/170/200 "small 6" will have a different bolt pattern and lighter duty internal parts than one from a V8. Beware the earliest V8 versions that will have a 5 bolt pattern bellhousing rather than the later (1965 and up V8) 6 bolt pattern. The 240/300 six will also work since they share the SBF pattern. 1967 and up have a nicer valve body and are a good choice.

The V8 trans also came with two different sized bellhousings and flywheel tooth counts, and your adapter may require one or the other.

Terry

5851a · 09-11-2022, 01:32 PM

I have 3 1978 vehicles with the C4 302 Fairmont, a 302 F150 and 351W LTD. I believe the larger vehicle or heavier loaded C4's have more clutches in their clutch packs. Any C4 you find should probably be rebuilt since the last ones built are getting close to 40 years old. When you do find one don't remove and lose the id tag on the servo. It's the transmissions dna code.

flaw'd · 09-11-2022, 05:22 PM

Also be aware of the C3, which looks like a C4, but was used in pintos, mustang II's etc...

flaw'd · 09-11-2022, 05:24 PM

Oh yeah, there is also a C4 bell housing from the factory for a 400/460 application. Harder to find, but useful when you have a small trans tunnel.

poolplayer1 · 09-11-2022, 05:42 PM

Sponsored Links (Register now to hide all advertisements)

I don't know if you checked with this company on the Y-block adaptor kit for the C4 tranny but here it is just in case.
www.flat-o.com

paul2748 · 09-11-2022, 06:26 PM

I used the Flat- 0-Matic kit and it went very well. Recommended.

fordor41 · 09-11-2022, 10:22 PM

I've contacted 2 companies that make adapters. thanks for the info.

JeffB2 · 09-19-2022, 11:04 AM

Quote:

Originally Posted by fordor41

I've contacted 2 companies that make adapters. Thanks for the info.

The adapter to use the non-computer AOD will cost the same, having that .67 Overdrive makes for a lot better highway cruising over a C4, will drop RPM at 70 MPH about 1,000 RPM = more MPG too. Best AOD donor is 1989-93.

https://transmissioncenter.net/shop/...k-motor-fo301/ Thanks to this year's inflation prices are up a lot, eight months ago this was $995.

Ole Don · 09-20-2022, 08:00 PM

If you must spend money to get a transmission, go with an overdrive. You will never regret the OD.

09-11-2022, 10:46 AM	#1
fordor41 Senior Member Join Date: Oct 2011 Location: elmira,ny Posts: 1,518	ford C-4 transmissions So after grenading our 1960 fordomatic , we're thinking of changing to a C-4. Adapter kits to a Y-block are available. so question is, from what I can find C-4's were used from '64-'81 in 6 cyl's and SBF. Is there a difference between a 6 cyl C-4 and a SBF C-4? bellhousing bolt pattern or strenght of the trans.

09-11-2022, 11:30 AM	#2
cadillac512 Senior Member Join Date: Apr 2019 Location: Kansas Posts: 925	Re: ford C-4 transmissions Both. The c4 from the 144/170/200 "small 6" will have a different bolt pattern and lighter duty internal parts than one from a V8. Beware the earliest V8 versions that will have a 5 bolt pattern bellhousing rather than the later (1965 and up V8) 6 bolt pattern. The 240/300 six will also work since they share the SBF pattern. 1967 and up have a nicer valve body and are a good choice. The V8 trans also came with two different sized bellhousings and flywheel tooth counts, and your adapter may require one or the other. Terry __________________ "It don't take but country smarts to solve the problem" (Smokey Yunick) '41 Merc Town Sedan / 260" 8CM engine '66 Fairlane four door / "warmed up" 302

09-11-2022, 01:32 PM	#3
5851a Senior Member Join Date: Oct 2014 Location: NE Iowa Posts: 1,665	Re: ford C-4 transmissions I have 3 1978 vehicles with the C4 302 Fairmont, a 302 F150 and 351W LTD. I believe the larger vehicle or heavier loaded C4's have more clutches in their clutch packs. Any C4 you find should probably be rebuilt since the last ones built are getting close to 40 years old. When you do find one don't remove and lose the id tag on the servo. It's the transmissions dna code.

09-11-2022, 05:22 PM	#4
flaw'd Junior Member Join Date: Sep 2012 Location: Henry's home town, Dearborn Posts: 13	Re: ford C-4 transmissions Also be aware of the C3, which looks like a C4, but was used in pintos, mustang II's etc...

09-11-2022, 05:24 PM	#5
flaw'd Junior Member Join Date: Sep 2012 Location: Henry's home town, Dearborn Posts: 13	Re: ford C-4 transmissions Oh yeah, there is also a C4 bell housing from the factory for a 400/460 application. Harder to find, but useful when you have a small trans tunnel.

09-11-2022, 05:42 PM	#6
poolplayer1 Senior Member Join Date: Sep 2015 Posts: 399	Re: ford C-4 transmissions Sponsored Links (Register now to hide all advertisements) I don't know if you checked with this company on the Y-block adaptor kit for the C4 tranny but here it is just in case. www.flat-o.com

09-11-2022, 06:26 PM	#7
paul2748 Senior Member Join Date: May 2010 Location: Midland Park, NJ Posts: 3,982	Re: ford C-4 transmissions I used the Flat- 0-Matic kit and it went very well. Recommended. __________________ 48 Ford Conv 56 Tbird 54 Ford Victoria

09-11-2022, 10:22 PM	#8
fordor41 Senior Member Join Date: Oct 2011 Location: elmira,ny Posts: 1,518	Re: ford C-4 transmissions I've contacted 2 companies that make adapters. thanks for the info.

09-20-2022, 08:00 PM	#10
Ole Don Senior Member Join Date: May 2010 Location: St. Michael, Minnesota Posts: 1,713	Re: ford C-4 transmissions If you must spend money to get a transmission, go with an overdrive. You will never regret the OD.