Ford c6 transmission differences. Here's how to modify and identify a C4.

Ford c6 transmission differences The case is in great shape. The Ultimate Ford Transmission Torque Converters Guide by DIY Ford Covering Ford C4 and C6 Automatic Transmissions process in detail. The Ford Motor Company has a series of transmissions. Mar 21, 2002 · I was lucky enough today to score a c5 trans out of an F100. I have been told that some of the early 92's had AOD's before ford made the swap to E40D. Sep 12, 2008 · 1961 - 1966 F-100 & Larger F-Series Trucks - C-6 vs AOD - can any one tell me the pro's and' cons of the C- and AOD trannys. also how do they compare in size with each other and then the 4EOD tanny. The arrival of the '70s met Ford with a respectable lineup of great and modern lightweight automatic transmissions. Similar in name, there are differences in the two transmissions that can be important if you are considering a transmission for your vehicle. this means that dimension "C" is usually longer than dimension "B". We’ll show you what to look for in this buyer’s guide. I don't know if C4 or C6 or what transmission it has. 1969 Fastback, 408ci, 5 Speed. The most common transmission swap with older Fords is from a C4, C6, or FMX to an AOD or manual 5-speed. Upon inspection the c6 I rebuilt a year ago has a totally different mount. Im running a ford 9 inch with a 3. i also have a late model ford aode\w a guy The C6 was replaced in Ford vehicles by the E4OD 4-speed automatic overdrive transmission in 1989, which has internals very similar to the C6 and an added overdrive unit. May 10, 2009 · This is something that I have been curious about for a long time, when looking for parts, there is always a difference in transmissions around 1976. And my 67 Galaxie briefly had a small block C6 from an 82 F150 in it behind a 69 351W. I have two C6 trannies. Thanks for any help you can give with this. Based on core components of the C6, this transmission was used in many light and heavy duty vehicles including the Bronco, F-150, F-250, and F-350. So please tell me if I got this right: There are 4 critical features for a small block Ford flexplate. Apr 16, 2012 · Literally millions of Ford cars and trucks were equipped with C4 and C6 automatic transmissions between the introduction of the C4 in 1964 and the replacement of the C6 in the 1980s. This article will take a good, hard look at Ford's offerings on the slush-box front. Nov 27, 2006 · The early C6 66 to 71 trans has a 1/4" x 18 NPS threaded fitting for the cooling lines. com So you're looking for a C4 for your vehicle, but you don't know what type you need or don't know how to identify the one that you do want? This article should give you a better grasp on the different types and uses of C4 transmissions. This guide Dec 8, 2006 · There are also C6 cases for the FE (332-428) style engines. It was marketed as the "SelectShift Cruise-O-Matic. the original c6 went bad so another was put in used out of a vehicle. 2 days ago · The C6 transmission with the stock pan requires 7 quarts of oil, while an extra 2-4 quarts is commonly required, based on the torque converter being used. 1971 Mach 1, M code, ram air, 4 speed, loaded. The C6 is largely considered the best automatic transmission ever built by Ford. Oct 5, 2002 · What is the difference (if any) between a FMX and a C6? Which is more desirable? How do I tell which I have?? Thanks, Randy Dec 9, 2016 · 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - C6 trans ? 4wd &2wd - Hi there guys I have a question, is there a difference between a c6 trany in a 4X4 and a 2wd. I do know that I had my good PI C6 rebuilt by a different shop here in town after My Black retired. Sep 28, 2016 · Originally Posted by dazedandcofused i have a 69 f-250 camper special. Information on the Ford C6 Transmission Rebuilding Video from Technical Videos. There are a lot of parts that swap between full-size cars and full-size The C6 was made in five different bell housing varieties. The easiest way to tell what fluid you should be using is to check the dipstick. As such, Type F is a much grippier fluid than Dexron. Sep 21, 2007 · The Ford C6 transmission has been in production since 1966. Aug 15, 2011 · Pre-Power Stroke Diesel (7. I was woundering if there were any other major differences between the early and late C6 cases. What is the difference between C4 and C6 transmission? The C4 can be split into three sections, which are the transmission case, bell housing, and the tail housing. Aug 14, 2012 · Clutch, Transmission, Differential, Axle & Transfer Case - Difference in C6 years - I am trying to buy a rebuild kit for a C-6 that I have. late model) - I was successful in ID'ing my trans in the 70 F100. Known for its robust construction and ability to handle high torque, the C6 remains a favorite among classic car and truck enthusiasts. 3L IDI & 6. Seeing as we don't know a heck of a lot about Ford automatics, we abducted a variety of transmission experts and interrogated them for the following information. Within its case are a one-piece casting and a bell housing. What are the pros Feb 12, 2012 · I didn't realize that there were shift kits for a transmission that uses an electronically controlled valve body. When I Sep 16, 2021 · Clutch, Transmission, Differential, Axle & Transfer Case - Differences in C6 internals? - OK, I'm going in. It even has a 'H' servo,the first i have ever seen. 20@131. My 400 79 F150 currently has the C6 from a 460 74 Country Squire. They specify between those for 66-76 and 77-93. Problem is though I saw some people mention there are differences in starter location on C6 transmissions depending on if its a 157 or 164 tooth flex plate. 59MPH, best 60 ft: 1. And the Sep 25, 2020 · The Ford C6 automatic transmission is a great example of this in the automotive world because it’s also the foundation of newer automatics in Ford trucks. It was in production from 1966-2004 and has been used as a replacement for the COM transmission in 1958-1966 Tbirds and beyond. The way to pick a c5 from the outside is Deep pan(2. From its debut in 1966 to its decades-long service across everyth C4 Identification and Selection By: Paul Pearson e-mail: paul_pearson@hotmail. There can be difference in gear settings but what you are referring to is the selector arm. Feb 29, 2012 · Most transmission builders agree that Ford's C4, C6, and FMX transmissions are not only rugged and dependable, they're also simple to identify, rebuild, and service. Sep 26, 2006 · The C6, in stock form, is a stronger transmission than the C4 in stock form. Ford introduced the automatic overdrive (AOD) in 1980, which was the first of its kind. While physically too large for use in most passenger cars, these Apr 24, 2024 · From the November 1969 issue of HOT ROD: How to "trick-up" a Ford C-6 automatic transmission—make it live is the problem. Among these transmissions, the C-series are unique and serve as the gold standard for Ford vehicles. The C4 was Ford's first company designed and built automatic transmission Jul 11, 2023 · The C-6 transmission is a heavy-duty three-speed automatic transmission manufactured by Ford Motor Company. The C4 and C6 were transmissions that were manufactured and used by the Ford Motor Company in certain vehicles. RT-12609A), and other transmission identification information, are stamped on the transmission tag which is attached to the side of the transmission. 428 powered Fairmont drag car, Best ET: 10. Introduced in the mid-1960s, it quickly became a popular choice for heavy-duty applications in Ford trucks, as well as performance cars. Ford's C4 and C6 3 speed automatic transmissions are similar in operational characteristics; however, there are still unique differences between the C4 and C6 transmissions. The non ribed cases are from cars/vans with low floors, hence interference. Oct 4, 2014 · I am posting this as info the the Ford public at large. Don't know if thats right thats just what I've been told. I've heard Jun 21, 2013 · Prior to 1964, Ford fitted most of its vehicles with Borg-Warner designed two- and three-speed automatic transmissions. i have a c5 that i want to put behind a 351w that i am going to put in my 54 f100 would this be a good move or do i need to get a c6. Feb 17, 2007 · I was wondering if anyone could let me know which one of these transmissions is a better performer? I have heard varying opinions and was hoping to get it cleared up so I can decide whether to rebuild my fmx or move to a C6. I have pulled it down to do a real comparison of the improvements + differences. I bought the later C6 for the case to use it my 428 Mustang. Type F is a non-friction modified fluid. Please note that there is no "dash" between the "C", and the "6". The AOD transmission was introduced in Ford automobiles in 1985 and eventually replaced the C4 and C6 transmissions. e. Some C6's have a slightly longer tail. Some models include fluid pickup extension and gasket (or require a 4wd filter). It is esoteric, but I could not find a simple photo or thread showing the differences in Valve Body design for the C6, relative to the detent for maintaining shifter position inside the transmission, which occurred in the early '70s. Although the C6 has a completely different case and internal components than the C4, it is virtually the same internally to the C4—on a larger scale for heavy-duty use. Read this article for maintenance and upkeep advice to increase lifespan on your Ford C6. For instance, while C4 transmissions may have been launched and For 1966, Ford introduced its own heavy-duty C6 3-speed automatic transmission for high torque applications behind large displacement big-block V-8s. You are correct, the rods and shifters are different. The C6 was almost exclusively used for high performance vehicles and trucks. Sep 9, 2010 · hey everybody Ive got a friend whos running a bronco 302 with a c6 transmission. I didn't have access to my C6's and couldn't easily mesaure the OAL of one, so I posted a picture. The transmission works great and shifts perfectly. Dec 1, 2023 · After I struck out on the 67 MEL transmission purchase & then missed an affordable 429PI/CJ transmission with cast iron tailshaft housing before prices went nuts and Searchtempest was castrated, I changed directions to go with a WR Toploader. I've heard outrageous claims of an improvement of 4 tenths of a second switching from a C6 to C4. well we found out that there is a difference between the bellhousings for big block and small block Sep 11, 2017 · Ford Truck Enthusiasts Forums Older, Classic & Antique Trucks 1948 - 1956 F1, F100 & Larger F-Series Trucks c-6 Transmission shift pattern Jun 16, 2017 · 1973 - 1979 F-100 & Larger F-Series Trucks - Shift linkage differences - I swear I have seen this discussion about 2WD and 4WD C6 linkage before but can't find it. Jul 30, 2008 · 1987 - 1996 F150 & Larger F-Series Trucks - E4OD vs C6 - pros and cons of each or why one is better than the other Feb 24, 2006 · How can you tell the difference between FMX and C6 tannies? Are there markings or different characteristics of the bellhousing? My buddy bought a 71 and the paper says FMX and he thought it was a C6 1971 Spring Sport Special. The other one is later (I don't know the year) with the small bell housing to fit my 300 six. 20% power loss vs 25% power loss for the entire drive train). Ford needed a gearbox that could handle the muscle of their big V8s like the 429 and 460, and the C6 stepped up to the plate. Power steer, AC, etc will require different brackets to fit 460. The C4 and C6 are held in higher esteem by automotive enthusiasts than the C3 and the C5 for their durability and simple designs. Ford Transmission Dimensions Dimension "C" is the distance from the bellhousing to the center of the transmission mounting pad. Internally all C6's are brutes. " Compared to its predecessor MX transmission, the C6 offered lower weight, less complexity, less parasitic power loss, and greater torque capacity for larger engines. Just wanted to be sure that if I got one for a C4 it would match the characteristics of the one I have now, but was unsure of how the stripe differences affected performance, if at all. Thanks. Apr 5, 2004 · Clutch, Transmission, Differential, Axle & Transfer Case - C6 Vacuum Modulator: Which One?? - Hi All, I have a 1987 E350 w/460 and 4BBL. 5"deep) Fine thread on fr band adjuster Large Jun 11, 2010 · Depends on the year of each vehicle and the wheel bases. May 22, 2024 · Where is the transmission identification? Transmission model designation (i. Nov 5, 2019 · Differences Between the C6 and AOD The C6 transmission is a three-speed that appeared in most Ford trucks between 1960 and 1997. the servo comes on at different pressures they have Jan 13, 2006 · C6 and AOD Automatic transmissions, made my choice Jump to Latest 11K views 5 replies 4 participants last post by saf-t scissors Jan 14, 2006 Landslide Discussion starter Oct 19, 2004 · Clutch, Transmission, Differential, Axle & Transfer Case - difference between c5 & c6 - can anyone tell me the difference between a c5 and c6. Mar 23, 2014 · The same C6 shift lever is used on '66-'69 Fairlane/Torino, '67-'69 Mustang/Cougar and '67-'68 Galaxie all with floor shift. We found that like GM, Ford also made a number of trannies capable of fulfilling the needs of the weekend warrior, class racer, heavy hauler, and Aug 9, 2023 · The transmission is one of the most vital parts of any car. Sep 23, 2018 · In situations where your Ford, or any other engine has had performance improvements, it makes sense to also upgrade the transmission’s performance. The rebuilt unit's mount straddles the bottom of the t/shaft and has three studs protruding from the bottom. Over the summer he bought a 70 something ford torino with a 460. If it is on the driver’s side of the Oct 9, 2011 · 1987 - 1996 F150 & Larger F-Series Trucks - AOD or E40D How do you tell the difference? - Hey guys I have a 92 F-150 that was manufactured in 91. A later-model… Produced from 1966–1996, the Ford C6 transmission is a heavy duty 3-speed automatic gearbox that saw use in some of the Blue Oval’s most popular models. This was a Jul 31, 2017 · 1967 - 1972 F-100 & Larger F-Series Trucks - Is a C6 the same from a Car or Truck? - Are the C6 Transmissions the same for all years and makes? Is there different shaft sizes on the C6 or are there differences between the Cars and Trucks? Im Talking 2 Wheel Drive. Designed to be a lighter, more durable automatic than its predecessor, the Borg-Warner MX, was built to provide torque and speed control during lower gears. Jul 11, 2006 · Anyhow, the "made in india" transmission mount that came w/ the kit has three holes that bolt it to the tailshaft. One is the original one from my '72 F-250 Camper Special, and was behind a 360 FE. The Ford C6 is a heavy-duty automatic transmission built by Ford Motor Company between 1966 and 2004. Here are 3 types of Ford AOD Transmission Identification. These The C6 transmission is a three-speed that appeared in most Ford trucks between 1960 and 1997. Most column shift C6`s have the lever pointing downward, and towards the front, a little lower than the pan rail. Identifying this series can be done visually or by knowing their year of production. Dec 21, 2019 · Ratios more resemble those from the C6 and C4 allowing you to run your stock ration with no loss of acceleration on takeoff. Ford stopped using the C6 in most of its trucks, but the transmission is still commonly used in drag racers today. 32 59 Meteor 2 dr. IMO if you're going to go to the effort of doing a transmission swap put in a 4-speed, an AOD or 4R70W. I built the C6 that's in my truck about 10 years ago and it's a totally stock transmission except for having the "CJ" direct drum and a Transgo shift kit. Good vacuum down to the modulator first off, and the kickdown rod I have adjusted to match my '79 dually. These deep pans offter extra oil capacity, more cooling ability and no modification to the dipstick is needed. I've also heard of a 30-40lb weight difference and freeing up 40hp Nov 8, 2010 · Anyway, only 29000 miles on the truck, but the C6 ain't shiftin' into third, but has a great 1-2 shift. g. Would somebody be able to shed some light on the differences between pre 76 and 76 and up C6 differences? Nov 2, 2025 · Yes, a Ford transmission identification chart provides a detailed breakdown of the different identification numbers and what they represent for each type of Ford transmission. On the other hand, the C6 identification is the Borg-Warner flexible shift band and the Simpson planetary gearset it features. AOD, T-5, Ford transmission pan ID, Ford transmission installation tips and General Powerglide Info. Oct 15, 2003 · I know nothing really about either. C4's were produced and used in production cars and trucks from 1964 to 1981 The transmission tips and FAQ's are divided into sections: C4, C6, FMX. Join me, Ed, as we dive deep into one of Ford’s most legendary transmissions—the mighty C6. . 50 gear. I hate automatic transmissions, but I need to help a Bronco friend. Clutch, Transmission, Differential, Axle & Transfer Case C6 trans cases: are they the same? Oct 27, 2003 · Has anyone out there made the switch from a C6 to a C4? I'm trying to figure out the performance gain at the dragstrip in doing so. is there a difference between a car c6 and a truck c6? Yes, to what you are asking. How to tell the difference between a Ford C4 and C6 transmission? Determine where the speedometer driver gear is located. Type F is licensed by the Ford Motor Co. It is "C6", NOT "C-6". Oct 24, 2003 · Clutch, Transmission, Differential, Axle & Transfer Case - Choice of C6 Vacuum modulators? - I understand that there are several different kinds of vacuum modulators (different colored stripes) for the C6, but what are the differences? Apr 4, 2006 · The floor shift C6`s have a curved shift lever that points upwards, and is higher than it`s pivot point. These transmissions are still used frequently. BTW, the 351C bellhousing patern is the same as 302-351Windsor enginesit's the 351M & 400 that are odd in the motor mounts but have the 429/460 bellhousing patern. Here's how to modify and identify a C4. Jan 13, 2023 · Ford’s small block and big block engine families have their share of flexplate differences. The amount of power loss difference between the two is less than 5% (e. * Fits Ford C6, Also fits trucks (+2 quarts) * Extra oil capacity - more cooling ability * No Nov 20, 2002 · 1967 - 1972 F-100 & Larger F-Series Trucks - C6 identification (early vs. It is shifting very early under moderate acceleration and I decided to replace the modulator (first I adjusted the screw in the vacuum port fully in, with a small amojunt of The Ford C6 transmission first rolled out in 1966, replacing the older MX and FX automatics. Sep 14, 2009 · Read about the Ford automatic transmission and see pictures of the different options of transmissions from TCI, Gearstar, and Phoenix Transmission Products, inside Rod & Custom Magazine. The AOD transmission was introduced in Ford automobiles in 1985 and eventually replaced Feb 7, 2012 · The Ford C6 transmission would go on to enjoy a 30-year service life as Ford phased it out in 1996 to make room for overdrive versions of its big transmission line-up. Nov 22, 2023 · 68 C6 transmission differences Moderator: Dan Szwarc 20 posts 1 2 Next Mcdizzle83 Newbie Posts: 12 Joined: Wed Nov 22, 2023 9:10 pm Nov 16, 2018 · Enter the quantity for each item and then select Add to Cart Jun 26, 2024 · Ford’s C4 transmission was the first automatic used in the Mustang. And thanks to this shared foundation, Ford’s C6 is ready to upgrade to the refinements implemented in its successors. hes looking at putting the 460 into his TJ. Apr 4, 2023 · The Ford C6 Transmission (SelectShift Cruise-O-Matic) was a 3-speed automatic transmission with Ford Big-block V8s from 1964 - ‘96. These purely mechanical (no electronic controls) automatic transmissions are still popular with racers, hot rodders, and restorers today due to their simplicity and low cost. Apr 21, 2008 · There's no reason to prefer a C6 over an FMX unless you're making really big torque numbers. The C6 is often mistakenly identified as a C4 transmission, also manufactured by Ford. The Ford E4OD and 4R100 Transmissions E lectronically Controlled 4 Forward Gears OD = Over Drive Introduced in 1989, the E4OD was Ford's first electronically controlled transmission. Dexron, licensed by General Motors, IS a friction-modified fluid. Nov 15, 2016 · Do our Broncos running C6 transmissions come stock with the "deep" pan or do the deep pans I see advertised add an additional 2 quarts over what our stock (3" depth) 4wd pans add? Oct 11, 2021 · Clutch, Transmission, Differential, Axle & Transfer Case - C6 internal differences? - I've got two C6 apart on the bench, the one from my '72 F-250, and a later one (80's) with a small block bell housing. Ford part # C6OZ-7A256-B. I am looking for a c6 for my 84 f150 4X4 , but I want to know if a 2wd will fit? Jan 9, 2020 · Technical C6 Manual Valve Body? Discussion in ' The Hokey Ass Message Board ' started by Clay Belt, Jan 9, 2020. Aside from the C6, Aug 12, 2009 · Re: Differences in C6 transmissions Old blue Racin Team August 13th 2009, 9:00 am Welcome abaord man nice project you got there Old blue Racin Team Posts : 1579 Join date : 2009-07-03 Age : 35 Location : North Carolina Like Dislike Apr 29, 2018 · I figured I'd have to go with a C4 modulator because they and C6's are the only ones listed. It was called the “SelectShift Cruise-O-Matic” in the early days, and because of its ability to handle more torque than the C4 transmission, it was commonly used behind the big engines in full-size sedans and pickup trucks. Apr 6, 2022 · I dedided to make my own thread on Flexplates. Our goal here isn't to show The Ford C6 transmission stands as one of the most reliable and durable automatic transmissions ever produced. 9L) - c6 vs e40d - well i went to the doctor he in short my gear jaming day are coming to a end due to my knees breaking down so im not going to sell my truck so that leaves me two choise the built proof c6 or the wireing night where that is the e40d if i was going to do a c6 it i Mar 22, 2019 · How is the best way to tell what type of automatic transmission you have? My 71 Mach 1 originally had 302 V2, now has a 351W V4. Starting from the year they were produced, their specifications, as well as their applications, these two transmissions are worth comparing side by side. The reason I'm asking is Dec 31, 2000 · The first model year of the C6 transmission was 1966. Jul 4, 2010 · Lets talk a little about the confusing world of the C6 transmission and what Servos and Levers mean: I'm a transmission novice But i wanted to understand a little about why people want certain servos and levers inside their transmission. If you are interested in knowing the type of transmission in your Ford vehicle and its […] May 16, 2010 · I thought he was asking about passenger car short tail shafts or -7A039- extension housings. But the C6 has more rotating mass, which translates into more power loss. What's the difference between a Ford C4 and C6 transmission? Because the C4 and C6 were developed at the same time, they're very similar; the only real differences are size and low-reverse function. sedan 332, Ford O Matic 74 F350 ramp truck 390 4speed Sep 23, 2023 · Uncover the secrets of Ford C4 transmission identification - Your ultimate guide to decoding and understanding the most iconic engine in automotive history! Feb 15, 2025 · Literally millions of Ford cars and trucks were equipped with C4 and C6 automatic transmissions between the introduction of the C4 in 1964 and the replacement of the C6 in the 1980s. The AOD family is based on the FMX design, which was in terms of shift quality and general flexibility was the best of the 3-speed Ford automatics. Jan 2, 2002 · Ford Truck Enthusiasts Forums Misc. Jun 30, 2010 · B&M's Deep Transmission Pans are made of cast aluminum and feature built-in drain plugs and mounting hardware. The focus here is putting a Ford AOD into a classic Mustang and other vintage Ford applications, which are the more common swaps. Not only do both transmissions have a similar Apr 14, 2021 · I have a small block C6 in my old truck that I am going to get a C6 built by Broader Performance to swap my old one out for reduced down time. It did this without exceeding the packaging dimensions of the MX. Is the following correct for STOCK configurations? In no particular order Sep 23, 2018 · Ford used type FA transmission fluid, which was specific to Ford transmissions until mid-1977 when C-6 transmissions were converted to Dexron/Mercon late in that model year. The picture caption related it to a funny car, and the 1970 C6 Dragster transmissions could of been used in a doorslammer or a funny car for that matter. I just happened to see an ad here locally where a guy was selling a 351Cleveland with an FMX, both from a 1970 Torino, and was wondering what differences in the two transmissions and if either one is thought to be better for the street? I do know that a C6 is Despite the arrival of the 4R100, Ford continued producing the C6 automatic transmission for industrial applications until 1996. Just in time, car craft had an article about ford transmissions and how to quickly ID them by the pan shape. These purely mechanical (no electronic controls) automatic transmissions are still popular with racers, hot rodders, C6 transmission differences? Outside of the output shaft are there any differences between a small block C6 based off when it was produced? I am looking at getting a C6 built by Broader Performance for my '82 F150 but afraid there might be some unseen issues if the C6 is a older or newer one. Note: The mounting pad is usually a part of the extension housing, but the graphic shows it on the maine case. The C6 was born using Type F fluid. For years, the Ford C-4 automatic was a reliable three-speed automatic transmission for many Ford products, and is fine for most 289, 302 or 351 engines that have received modest modifications. Feb 28, 2012 · I'm putting a 302 sbf in my 1950 mercury, and I'm not sure what transmission is better. But most of them have no difference. I have a 76 C6 that has 1/8" x 27 NPS fittings for the cooling lines. Oct 21, 2004 · No, C6 transmissions are engine family specific as the bellhousing & trans are a one piece casting ie, small block C6 will only fit Cleveland or Windsor, FE (390 etc) will only fit FE, & 385 series (429, 460 etc) will only fit these engines (but will also suit 351M & 400M). Aug 14, 2002 · Clutch, Transmission, Differential, Axle & Transfer Case - Difference between C4 and C6? - What is/are the difference (s) between the C4 transmission and the C6? May 4, 2015 · 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - Ford C4 & C6 Automatic Transmissions - Question what is the difference between the Ford C4 & C6 Automatic Transmissions based on dimensions In this video Jay Robarge of Broader Performance will show the main difference between 1966-1971 and 1972-1996 valve body and case design changes in the Ford I get many questions from customers and people on Ford forums asking about how to tell the difference in C4 year model, case and pan fill, styles of bellhousings etc. Dec 5, 2021 · Clutch, Transmission, Differential, Axle & Transfer Case - Difference in C6 years - I am trying to buy a rebuild kit for a C-6 that I have. Lots of choices for controlling the transmission via aftermarket shift controllers like the ones from US shift. The "C" family of Ford transmissions was one of Ford's most popular class of transmissions for more than three decades, and includes the C3, C4, C5 and C6. osxltlb pkmv dcsdeuxh azrxs sbem mkgxp rjzhioj gxnuqem ekp rio edlmvz xdmd dajy gmkn cuuw