C-6 vs. 727
Thread Starter
|
New User
Joined: Jan 2005
Posts: 20
Likes: 0
From: Chesterville, Ohio
C-6 vs. 727
Hey, just curious as to what's a better tranny. Ford C-6 or Dodge 727. It's not going to affect a decision or anything, but I have a 727 out back and I'm looking for a C-6 so it's a coincidence. I'm still stickin with ford though, the 727 is Dad's :-)
Posting Guru
Joined: Jun 1999
Posts: 2,404
Likes: 1
From: Everett, Wa
Both trannies are near indistructable for an auto. I'm not sure but I think the 727 may be a bit more effecient but its very easy to mob the C6 during a rebuild to be as effecient as any auto ever built.
Elder User
Joined: Aug 2002
Posts: 720
Likes: 0
From: South Dakota
I once heard that both were designed by the same person, who also designed the TH-400 for GM. They are both very strong trannies, but have disadvantages such as no overdrive, no lockup TC, and high 1st and reverse gears.
Laughing Gas
Joined: Oct 2004
Posts: 1,021
Likes: 0
From: Brandon Mb
They are equally strong transmissions, both are bulletproof. So is the Th400. What I'm suprised at is the strengh of a 904, which is equal to a C4 or TH 350, for those who don't know. I swap powertrains from car to car for my demolition cars, and have a 904 that has been through 4 or 5 derbies, and still works fine.
Trevor
Trevor
Posting Guru
Joined: Jul 2001
Posts: 1,914
Likes: 1
I've had both. The 727 in a 69 Charger, highly modded 440, 14/1 compression, cam, headers, 10" slicks, going thru the clocks in the high 9's. For the most part, the tranny stayed with the huge horsepower and torque of the 440. Second gear was a problem occasionally. I have a 74 F-100 in the garage with a modded 391 making a little over 500 hp with a C-6 behind it with a shift kit. It holds the old FE block quite well. Either tranny is the best of each manufacturer. But in my experience, the 727 will hold up a little better to abuse. Why is it I get the feeling this is the old Ford/ Dodge arguement?
Trending Topics
Elder User
Joined: Sep 2003
Posts: 785
Likes: 1
From: colorado
yep they're both stout.
i asked the guy where i had my C-6 built if it would handle the 460 i built for my truck. he just kind of chuckled and said it will handle just about anything you throw at it as long as you keep it cool. and it has so far.
i was able to kill a727 in my 70 super bee doing stupid kid stuff. had to drive home about five miles in reverse. good thing it was 2:00 am
i asked the guy where i had my C-6 built if it would handle the 460 i built for my truck. he just kind of chuckled and said it will handle just about anything you throw at it as long as you keep it cool. and it has so far.
i was able to kill a727 in my 70 super bee doing stupid kid stuff. had to drive home about five miles in reverse. good thing it was 2:00 am
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Senior User
Joined: Nov 2004
Posts: 156
Likes: 1
From: Georgia
I worked in my dad's transmission shop from the time I was 12 years old and ran it myself for a few years after he got to old to handle it. I have done work on a lot of both of these transmissions and saddly for me being a ford guy I have worked on a lot more C6 trannys than 727s.
They are both very solid as is the GM THM400 but the C6 and its little brother the C4 had chonic problems with the valves sticking in the valve body and govenor if they ever got any debri in them, causing problems with fluid pressure, poor or no shifting and sometimes no down shifting which would often lead to burned up clutches. The fact that they had a wire mesh filter was no help in keeping trash out of the valve body. The 727 used a felt filter which would sometimes clog if the fluid got really dirty but it kept the valvedbody clean and you could replace it and keep truckin with no problems.
They are both very solid as is the GM THM400 but the C6 and its little brother the C4 had chonic problems with the valves sticking in the valve body and govenor if they ever got any debri in them, causing problems with fluid pressure, poor or no shifting and sometimes no down shifting which would often lead to burned up clutches. The fact that they had a wire mesh filter was no help in keeping trash out of the valve body. The 727 used a felt filter which would sometimes clog if the fluid got really dirty but it kept the valvedbody clean and you could replace it and keep truckin with no problems.
Posting Guru
Joined: Mar 2004
Posts: 1,099
Likes: 0
From: Destin/Ft. Walton Beach,
Only problem I ever had with a TF 727, is when I didn't hook up the kickdown linkage. I didn't know that it needed to be there, to control line pressure. I had all Hemi 727 internals, and it still fried.
Senior User
Joined: Apr 2004
Posts: 345
Likes: 0
From: Hickory Tavern, SC
the 727 was a great tranny, but the later C-6's are just as tough or tougher. I rebuilt aC-6 with 165,000 miles on it behind a 460 with 250 H.P. nos system on it. It was the easier to rebuild than the C-4 or C-5.
Last edited by IB Tim; Jan 27, 2005 at 11:20 AM. Reason: SP
Senior User
Joined: Jan 2004
Posts: 113
Likes: 0
From: Jacksonville, FL
If you are looking for good info on the 727 check here:
http://www.allpar.com/mopar/torqueflite.html
I've read up on the C-6, but can't find a link now.
http://www.allpar.com/mopar/torqueflite.html
I've read up on the C-6, but can't find a link now.
Thread
Thread Starter
Forum
Replies
Last Post
hail destroyer
1973 - 1979 F-100 & Larger F-Series Trucks
17
Feb 14, 2017 12:14 PM
DIP51
1973 - 1979 F-100 & Larger F-Series Trucks
28
Nov 15, 2016 01:10 PM
William Mark Brown
1999 - 2003 7.3L Power Stroke Diesel
15
Oct 7, 2015 10:43 PM
