Who likes their C4?

[65stang311]

Just a few questions for those of ya with a C4 (1967 type)...

What are your experiences running 500+ horses thru a c4?

Who makes the best rebuild/shift kit for drag racing?

What torque converter do you use, and how high a stall?

and where to get a good driveshaft?

Im new to the automatic tranny, and for drag racing wanna try something new, tired of breakin t-5's and before that never used anything but a toploader so i dont really know squat about the c4.

Thanks in advance for all your thoughts.

 

[restomod]

you need to check out www.fordmuscle.com they have a c4 forum at the bottom of their forums page. check it out. you can learn alot just reading the forum. good luck

 

[rbohm]

the C4 can be built to handle up to 800hp at this point, though some tranny builders are working on getting 1200hp handling capability from it. B&M, art carr, performance automatic, and tci seem to be the best C4 builders around.

 

[trendkilllx]

i can tell you that what ever hp you have a place called www.sr7performance.com can build you a c4 for a very resonable price. They also do custom converters. They can probably build you a aod that will handle the power. They built my aod and it can handle 850hp and a 1 year warranty. really good service. tell them jason sent you.

 

[foghorn67]

c4's rule! can't say the same for stock though. there are some design flaws that these speed shops have to overcome.

 

[66coupe306]

the C4 can be built to handle up to 800hp at this point, though some tranny builders are working on getting 1200hp handling capability from it. B&M, art carr, performance automatic, and tci seem to be the best C4 builders around.

I have to diagree with the best builders. The one with most innovations is JPT in michigan, he invented some or most of the c-4 modifications readily used today. He also makes a beautiful custom valve body with transbrake. It is a real pain to get him to move quick though. The next, who I have no complaints about is dynamics up in connecticut. To get a good c-4, you need to go to someone who specializes in them and makes others as a side business. Most companies do chevy trannys but can build a c-4. Stay away from them, It'll only leave you with a box of broken parts.

 

[TheWolf]

I would step up to a C6

 

[FIRE14142002]

I have an art carr comp C-4 w/brake and custom convertor@3500. They make a really good product and stand behind thier work.

 

[allcarfan]

Too bad you dont live in GA, I have a guy that could build you a C4 that could take whatever you threw at it...for under $800!!

I like mine....even though I drove it in another car, its in my 66 now. Its a prepped C4, TCI 3300 stall, reverse manual valve body with transbrake, and a B&M hammer shifter. In a fox chassis the trans went 6.60s in the 1/8th - without the reverse manual valvebody and transbrake.

Do a search for Performance Automatic Transmissions Along with Mighty Might C4s

 

[D Durden]

My C4 hasn't given me a MINUTES problem in over 15 years. I grows some of the most beautiful roses you've ever seen and, in the summer, you can dig fishing worms underneath it.

 

[SuperDave]

Being the resident "fossil", I can tell you that my C-4's have been great. I like them. The only annoyance has been that they tend to leak fluid if they aren't "excercised" often.

I've also had numerous C-6's that have served me well.

 

[allcarfan]

SD brought up a good point about leaking if they are not run for a while.

 

[SuperDave]

Mine leaks during winter storage period. The seals have hardened but soon do these job when the car is driven a bit. It MIGHT leak a quart of ATF over the winter. I'm basically TOO LAZY to replace the front seal when the "fiX" is so simple: DRIVE IT!

 

[Fredo]

I would step up to a C6

A C-6 will not fit behind a 289/302 will it?

 

[TheWolf]

Yes it will

 

[allcarfan]

Yes, it will with the proper bellhousing

 

[3spd on floor]

yes a C6 will fit, but why would you do that? a properly built C4 will hold up just fine, and it robs less power than a C6.

 

[jcp123]

can't wait to get rid of the c4. it's a nice enough tranny with crisp shifts, and can be built for drag racing. but for my daily driver, i can't wait to drop an AOD and 3.73's in there.

but for drag racing, there's only 1 auto tranny i can think of that's any better: powerglide

 

[D Durden]

*cough cough* toploader *cough cough*

 

[Denny Wiedman]

c-4

got me a c-4 full manual from JPT and 10'' converter behind my 408w 69mach1, they are the best in the business, great service, great guys, love that little c-4, really bangs those gears.