3 Speed Manual vs 4 Speed Manual - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 10-06-2018, 04:36 PM Thread Starter
 
Join Date: Aug 2018
Posts: 62
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
3 Speed Manual vs 4 Speed Manual

I would appreciate hearing any opinions and insight from anyone on the topic of the three speed manual vs the four speed. I have been searching for the right GTO for quite awhile and occasionally (not commonly) I see one equipped with the three speed. I guess I had always thought I would find a car with a four speed, but upon seeing some really nice GTO's with the three speeds, I am wondering if I should be open to checking them out further. I know "back in the day" there was a cost consideration to going with the four speed option, but maybe there were other reasons cars would have been ordered with the three speed other than just cost?? What say you? Thanks in advance!!
jayvee53 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 10-06-2018, 05:37 PM
 
PontiacJim's Avatar
 
Join Date: Dec 2012
Location: Gastonia, NC - Born & raised in Connecticut - 31 years
Posts: 3,646
Mentioned: 1 Post(s)
Tagged: 1 Thread(s)
Quoted: 390 Post(s)
Garage
Quote:
Originally Posted by jayvee53 View Post
I would appreciate hearing any opinions and insight from anyone on the topic of the three speed manual vs the four speed. I have been searching for the right GTO for quite awhile and occasionally (not commonly) I see one equipped with the three speed. I guess I had always thought I would find a car with a four speed, but upon seeing some really nice GTO's with the three speeds, I am wondering if I should be open to checking them out further. I know "back in the day" there was a cost consideration to going with the four speed option, but maybe there were other reasons cars would have been ordered with the three speed other than just cost?? What say you? Thanks in advance!!
The 3-speed manual was the base transmission on a GTO. The 4-speed & auto were extra cost options.

The HD 3-speed used for a number of years is the Ford Dearborn 3-speed fitted for GM application. It is pretty rugged and will take a lot of abuse. Difference is in the spread of the gears. 4-speed has its advantages and was the manual transmission of choice offering the M-20, M-21, & later the M-22.
PontiacJim is offline  
post #3 of 9 (permalink) Old 10-06-2018, 05:50 PM
 
11th Indian's Avatar
 
Join Date: Feb 2018
Location: Staten Island NY
Posts: 104
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
I have a 72 with the Heavy Duty Muncie 3 speed.
After having a few cars with 4, 5 and 6 speeds is took some getting used to. Its like driving a 4 speed with first gear missing.

After putting 1000 miles on my current GTO, I kind of like it. I am not racing around and itís a very clean shifting transmission if its adjusted correctly. (Shifter linkage)
There are 2 different 3 speeds, one has a 2.42 first gear and the other has 3.03. the GTOs got the B model with the 2.42. I am starting to like it as I can often just start in second gear or shift from first to third. Even with my low compression 400 its very easy to drive in traffic with a minimum of shifting. If I do want to run through the gears it still has that visceral feeling, all I miss is the gear whine from a M22.

I wouldnít be deterred from buying a car with a 3 speed manual.
11th Indian is offline  
 
post #4 of 9 (permalink) Old 10-09-2018, 10:17 AM Thread Starter
 
Join Date: Aug 2018
Posts: 62
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Thanks for your comments! Much appreciated.
jayvee53 is offline  
post #5 of 9 (permalink) Old 10-09-2018, 07:55 PM
 
RMTZ67's Avatar
 
Join Date: Mar 2011
Location: Albuquerque N.M
Posts: 260
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 77 Post(s)
Garage
I also have a 400 and a original 3 speed with 3:55 gears. never disappoints in get up in go in any gear.
RMTZ67 is online now  
post #6 of 9 (permalink) Old 10-09-2018, 10:46 PM Thread Starter
 
Join Date: Aug 2018
Posts: 62
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Quote:
Originally Posted by RMTZ67 View Post
I also have a 400 and a original 3 speed with 3:55 gears. never disappoints in get up in go in any gear.
Thanks for your reply as well!
jayvee53 is offline  
post #7 of 9 (permalink) Old 10-10-2018, 04:30 PM
64-67 Expert
 
geeteeohguy's Avatar
 
Join Date: Feb 2008
Location: Fresno, California
Posts: 8,541
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 117 Post(s)
Another thing I'll add: while the 4 speed is preferable to most, the 3 speed Dearborn transmission that came in these cars standard is actually stronger than the 4 speed. And, most, but not all 3 speed cars were not flogged as hard as the 4 speed cars, so they tend to be in better overall condition with their original engines still intact. I have never owned an original engine 4 speed GTO, and I've had a bunch! I have seen many original engine 3 speed cars, however. If I saw a nice 3 speed GTO, I would have no issues with buying it instead of a 4 speed car. Still a lot of fun to drive, and still way cool.
geeteeohguy is offline  
post #8 of 9 (permalink) Old 10-11-2018, 04:30 PM
 
Join Date: Dec 2008
Location: San Antonio, Texas
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have owned both and the three speed and the four speed both are an identical 1:1 ratio in high gear, so no difference once you get there. The four speed has more jump off the line than the three because of the lower gear ratio. But the main difference for me that is solidly in the four speed's corner is the three speed (on my 64) was not synchro-mesh between 2nd and 1st, which meant I had to come to a nearly complete stop to downshift the car into first gear. With the Muncie four speed there is complete synchro throughout and no gear crunching going back into first gear when rolling up to a red light.
Pecosbill is offline  
post #9 of 9 (permalink) Old 10-11-2018, 05:07 PM
64-67 Expert
 
geeteeohguy's Avatar
 
Join Date: Feb 2008
Location: Fresno, California
Posts: 8,541
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 117 Post(s)
By '65 the 3 speed was synchonized on every gear, so not an issue in this case.
geeteeohguy is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



Similar Threads
Thread Thread Starter Forum Replies Last Post
Swap transmissions: 6-speed manual 2002 Camaro SS / 4-speed auto 1972 GTO w/ 5.3 LS twig 1964-1974 Tempest, Lemans & GTO Exhaust, Suspension, Alignment, Fuel Tank and Brakes. 2 04-28-2015 12:11 AM
3.46 vs 4.11?? top speed vs 0-60???? QUIKSLVR04GOAT Drive train, suspension, alignment and brakes. 6 12-11-2008 06:38 PM
04 GTO Auto vs Manual power difference? joeyk97 Racing and Kill Forum 30 01-08-2007 04:13 PM
Manual vs. Auto shifting GTOTerp Service, Maintenance and Technical Discussion 17 01-31-2006 07:03 AM
Magnacharger vs. Procharger vs. vs. STS Turbo vs.SLP Parts StocktonRaider 2004-2006 GTO General Discussion 0 05-27-2005 11:24 AM

Posting Rules  
You may post new threads
You may 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