Transmission- Need Info - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Bronco Forum Forum for discussion of the Ford Bronco

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 12-21-10, 06:18 PM Thread Starter
Registered User
Join Date: Dec 2010
Posts: 1
Transmission- Need Info

I recently purchased a 1984 Full sized bronco. 351w with 4 barrel holley. I noticed on the way home it was running about 3000 rpms and only going about 60-65 mph. Due to other circumstances I have pulled the motor and am fixin to rebuild. new bearings rings, ect. in the process of pulling the motor the tranny bell housing broke all across the top. now the question I would like to run a lower rpm at that speed, say maybe 2100 or so. is there a swap tranny i could use. Without purchasing a new one or stuff. something i could find at a junk yard. like the AOD or something?
shnively is offline  
Sponsored Links
post #2 of 4 (permalink) Old 12-21-10, 08:32 PM
2002 F150 XLT
Bert's Avatar
Join Date: Nov 2008
Location: Oregon
Posts: 10,238
Re: Transmission- Need Info

Send a PM to this member. Don't just post a visitor message. Do a PM. He's very knowledgeable on the Broncos.

Bert is offline  
post #3 of 4 (permalink) Old 05-06-12, 07:57 PM
Registered User
Join Date: May 2012
Posts: 3
You need to change your gear ratio in your diffs.
OhNoBronco85 is offline  
post #4 of 4 (permalink) Old 05-08-12, 10:01 PM
87_Crown_Vic's Avatar
Join Date: Apr 2009
Location: Omaha, NE
Age: 35
Posts: 374
Re: Transmission- Need Info

the RPMs will be lower and get better fuel economy but you will lose the take off speeds... my car i feel is geared a lil low and wanna bump to 3.27 or 3.55 trac-lok... your Bronco probably has 4.10s in it

my 1986 Grand Marquis LS... Rose...
87_Crown_Vic is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Bronco Forum
Gear in this thread - Powered by O'Reilly Auto Parts

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome