Moparchat - Home of MOPAR enthusiasts worldwide!



Go Back   Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Performance Talk

Click here to search for Mopar cars and parts for sale.


Reply
 
Thread Tools Display Modes
  #1  
Old 02-15-2012, 08:01 PM
dodgecharger71 dodgecharger71 is offline
Inactive User
 
Join Date: Jan 2011
Location: BAY CITY MI
Posts: 26
Default Transmission ?

Okay so I have a 75 440 which was out of a motorhome. I have an automatic tranny for it but would like to switch it out for a 4 speed instead. Now will a 68' 833 bolt up to the 440? It may be a stupid question but its for my 71 charger im restoring with my dad. Im not the most knowledgeable about stuff like this so any input will be appreciated!
Reply With Quote
  #2  
Old 02-16-2012, 02:12 AM
cudabob496 cudabob496 is offline
Inactive User
 
Join Date: May 2007
Location: Richland, WA
Age: 71
Posts: 2,018
Default

you'll be faster on the street with a quick shifting automatic (shift kit or manual valve body, high stall converter). don't really see
regular 4 speeds at the drag strip.

At launch, a high stall converter can double the rear wheel torque, so you blast out of the hole.

I had my 727 torqueflite rebuilt about 10 years ago. Upgraded a few parts. It has a 3500 stall and reverse manual
valve body. Got a good size tranny cooler up front. Also a finned deeper dish alum tranny pan. Has, thankfully, performed flawlessly,
through 10 years of street abuse! I also use synthetic tranny fluid, which may be helping.
Reply With Quote
  #3  
Old 02-16-2012, 05:33 PM
John Kunkel John Kunkel is offline
Registered User
 
Join Date: Nov 2001
Location: NorCal
Age: 80
Posts: 10,059
Default

The '75 440 will most likely have a cast crankshaft, these weren't drilled for a standard transmission pilot bushing. The way most folks handle this is to install a pilot bushing in the torque converter register but the 833 input shaft pilot is too long and will bottom out in the crank if the pilot isn't shortened by cutting the tip off.

When installing a manual trans bellhousing on an engine that never had one it is essential that the bellhousing bore be checked for runout with a dial indicator....failure to do this will cause all kinds of problems later if not immediately.

The page in the link below outlines what's needed to swap to a 4-speed from an auto.

http://www.darklair.com/727-to-833.html
Reply With Quote
  #4  
Old 02-16-2012, 06:10 PM
440roadrunner 440roadrunner is offline
Inactive User
 
Join Date: Feb 2008
Location: N Idaho
Posts: 831
Default

Quote:
Originally Posted by John Kunkel View Post
When installing a -- EDIT ANY EDIT -- bellhousing on an engine................. it is essential that the bellhousing bore be checked for runout with a dial indicator....failure to do this will cause all kinds of problems later if not immediately.

The page in the link below outlines what's needed to swap to a 4-speed from an auto.

http://www.darklair.com/727-to-833.html
Hope you don't mind my trashing your post. EVEN FACTORY original installations can be misaligned. My original 70 sixpack Road Runner / 4 speed had that STUPID 10 7/8 clutch they used, and it was VERY difficult to keep the clutch releasing correctly. After a period of time, it became obvious that the pilot bearing wore excessively, and that the bearings in the 4 speed failed early, along with ALWAYS being much harder to shift than my '69 383 car, or my '64 426.

FINALLY it was discovered that the bell -- FACTORY ORIGINAL--was misaligned.

And check an automatic, as well. They can be off which can certainly cause problems. I don't believe TF's are quite as critical as a manual box.
Reply With Quote
  #5  
Old 02-17-2012, 05:46 AM
Ray Bell's Avatar
Ray Bell Ray Bell is offline
Registered User
 
Join Date: May 2005
Location: Dalveen, Queensland
Posts: 3,236
Default

You don't mention whether or not the 727 is from a motorhome as well...

If it is, it's almost undoubtedly shorter than a standard 727 from a car.
Reply With Quote
  #6  
Old 02-17-2012, 06:53 PM
John Kunkel John Kunkel is offline
Registered User
 
Join Date: Nov 2001
Location: NorCal
Age: 80
Posts: 10,059
Default

Quote:
Originally Posted by 440roadrunner View Post
Hope you don't mind my trashing your post. EVEN FACTORY original installations can be misaligned.
Highly unlikely, the bellhousing was align bored with the block and stayed with that block throughout the build process; it was even painted while installed on that engine.

Unless you drove a particular brand new car off its transporter and have owned it ever since it's hard to say what parts were replaced along the line...dealers were notorious for using their new car inventory as a source of parts when the normal parts sources came up empty.

Automatics are more forgiving of misalignment because a "flex" plate drives the converter.
Reply With Quote
  #7  
Old 02-21-2012, 11:00 PM
dodgecharger71 dodgecharger71 is offline
Inactive User
 
Join Date: Jan 2011
Location: BAY CITY MI
Posts: 26
Default

@ Ray the reason I didnt mention it is because im not 100% sure. The guy I bought it from got in from his buddy but he never mentioned if it was from an rv or not. So i dont really know
Reply With Quote
  #8  
Old 02-22-2012, 01:45 AM
Moparmatt72 Moparmatt72 is offline
Inactive User
 
Join Date: Aug 2011
Location: Riverside, CA
Posts: 31
Default

Well you can always get a bellhousing made and put a 618 4 speed auto to your motor, or you can get one of those gear vendor overdrive units for on back of your 727.
Reply With Quote
  #9  
Old 02-28-2012, 08:31 PM
dodgecharger71 dodgecharger71 is offline
Inactive User
 
Join Date: Jan 2011
Location: BAY CITY MI
Posts: 26
Default

Yeah I mean im open to all options its just the $$$ thats the determining factor. Im 19 and make good money for my age but am still not going crazy with everything lol. Thanks for all your input you guys! Im going to have to do some more research and look into the things you guys suggested
Reply With Quote
  #10  
Old 05-12-2012, 01:30 PM
dodgecharger71 dodgecharger71 is offline
Inactive User
 
Join Date: Jan 2011
Location: BAY CITY MI
Posts: 26
Default Made a decision

Hey guys, I've decided just to go with the auto. I figured if I have a tranny, why bother spending the extra money to convert it. Down the road I'd like to swap in a 4 speed if possible. I just like the feeling of driving a manual. But money and performance wise, I think the auto will do just fine for now.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Transmission ID Help als426hemi Vintage MOPAR chat 1 01-29-2006 06:02 PM
transmission dodger34 Performance Talk 9 09-28-2003 09:20 PM
transmission, what's next? 7yr Vintage MOPAR chat 2 09-16-2003 02:29 AM
3.0 V6 Transmission cmick085 Front Wheel Drive - Parts for Sale 0 11-03-2000 12:49 AM
Ram Transmission dragracer Ram Truck Chat 3 08-23-2000 06:46 PM




All times are GMT -4. The time now is 03:13 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
. . . . .