Ford C4 Transmissions The Good The Bad and The Ugly 

I appreciate you sharing your knowledge. I bought a wide ratio and rebuild kit from you for my C6 19-20 years ago (before you moved to Texas). You also rebuilt the factory 10” converter (351CJ). Trans and converter are still doing great.

I love C4s. Can't wait for your series. Thanks.

Thanks Jay . Summed up the C4 very well. They have their limit but built right & treated right they last well Love the C4 & C6 content . Still very popular here in Australia . Looking forward to getting the C4 valvebody kits I've ordered :)

Appreciate you, your work\knowledge and your time. Just got some parts from you for my C6 build in the 79' Bronco. Also have a 65' Mustang with a C4, so interested to see the upcoming C4 series. Keep the C6 stuff coming as well. As you have time. I know how it is to have lots of work, so again, we appreciate you brother.

Great Videos Jay. Thank you for taking your time to produce these. I would LOVE to see some tips on the old Cruise-O-Matics. NO transmission shops will touch them anymore. :(

G'day Jay Rob here from Australia. Looking forward to this series for the C4. I bought a DIY transbrake valve body kit from you, great bit of gear! Auto is built, and I'm looking forward to testing it out... And really looking forward to hold onto that tbrake button and sending it 😅

Thanks for the C4 information. Could you do a video comparing the C6 to the TH400?

Hi Jay, Great series. I have one of your C4 valve bodies ( down here in New Zealand). Regularly check you shop for build parts. Keep them coming.

Thanks for your thoughts. Great videos.

302 DOWN, C-4 WAS A GREAT TRANS, CHEAP TO REBUILD AND EASY TO MAKE SHIFT GOOD. NEVER BROKE ONE DRAG RACING EVEN IN 351W PINTOS WITH 400HP. 351 UP IS C-6 TIME. A GUY FROM COTTMAN HAD AN AWSOME C-4 BEHIND A 70 351C THAT NAILED SECOND LIKE A STICK BACK IN THE 80S. GOOD TRANS!

I always loved the C4 and the C6

I appreciate you doing these videos maybe I can learn something

I mainly build 3 speed Chryslers for drag racing and consider the 904 one of the quickest automatic transmissions that was mass produced. The design carried over to stock, super stock and comp eliminator categories with 904 internals being put into 727s, T350, etc. I consider the C4 a great, lightweight and very quick transmission and rank it up there with the 904. I am of the same thinking, and only recommend the C4 for lighter, naturally aspirated small blocks making 800-1000hp. And we've published that information on our website for years.

So if I’m shooting for building a 302 stoker to get 400 and 400 a decently built c4 should be fine

Rebuilt C6 behind a 351W skips 2nd in drive, manual shifting everything works as should. Any ideas?

New subscriber from Motown/Dearborn. Had to sub after The Speedmaster fraud. Running a built 460 BBF and a built Manual Valve body C-6. Have an oil cooler but that dang C-6 runs on the hot side.

In the junk pile is a C5 out of 1986 3.8L Cougar. I don't hear too much about this box, but I am of the impression that the oiling system and other parts are updated from the C4, and thus would be a better choice. I believe that the 3.8 V6 bell bolt pattern is the same as the pushrod 302/351W, so it should be easy to swap in. Feedback is appreciated.

What are your thoughts on TH350?

I don't doubt your knowledge, but you talk around the directness that some people need The right application removes Frustration more than anything. Accept knowledge.

I wish you would stress application. I do air conditioning. And I have people put 5 ton units on a 3 ton house and they just throw stuff at it when you don't need it Say understand the application for what you're doing or what you wanna do.

Please build mine on video!!!lol