Author Topic: 727 questions  (Read 791 times)

Offline Nate10

  • Jr. Member
  • **
  • Posts: 20
727 questions
« on: July 28, 2007 - 03:25:26 PM »
I know this sounds like a newbie question but I am new to the mopar and need some help.

Are all 727 trannys the same?

I am putting a 6.1 hemi in my 70 challenger and want a 727 auto which one should I be looking for?  Any and all help is appreciated.  Thanks.




Offline tactransman

  • Sr. Resident
  • ******
  • Posts: 5401
  • 1973 Challenger- Member here since April 14, 2006
Re: 727 questions
« Reply #1 on: July 28, 2007 - 03:44:21 PM »
I believe the 6.1 has the same bellhousing as a small block. If so,you need a small block 727 with a 4 clutch direct drum and a regular car tail housing. Do you want a Lock Up or a Non Lock Up?.
Terry-tactransman 
Torqueflite/Automatic Transmission Specialist
Union, Mo.
Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.

Offline Nate10

  • Jr. Member
  • **
  • Posts: 20
Re: 727 questions
« Reply #2 on: July 28, 2007 - 03:48:33 PM »
what is the difference between the two

Offline tactransman

  • Sr. Resident
  • ******
  • Posts: 5401
  • 1973 Challenger- Member here since April 14, 2006
Re: 727 questions
« Reply #3 on: July 28, 2007 - 04:04:26 PM »
Lock up's have a clutch in the torque converter that locks up and takes the fluid coupling part of it out .(makes it direct,no slippage)

727 - Non-lock-up 24 spline 1967+

727 - Non-lock-up 19 spline up to 1966

727 - Lock-up 23 spline 1978+
Terry-tactransman 
Torqueflite/Automatic Transmission Specialist
Union, Mo.
Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.