Flywheel and clutch - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 05-14-2019, 08:36 AM Thread Starter
 
Join Date: May 2019
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Flywheel and clutch

I am putting a 1971 400 with muncie four speed in a 1967 gto the muncie is a 1967 yr what size clutch and flywheel would i need to get how many different sizes came in 1967 ?
Joseph Emmett is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 05-14-2019, 09:12 AM
 
dcoydad's Avatar
 
Join Date: Sep 2017
Location: Oklahoma
Posts: 31
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Garage
I'd go with Hayes 11"
dcoydad is offline  
post #3 of 5 (permalink) Old 05-14-2019, 02:09 PM
 
BLK69JUDGE's Avatar
 
Join Date: Jun 2010
Posts: 409
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
they had 10.5 and 11" ..

not all ORIGINAL flywheels are drilled for the 11"
most were 10.5

most all aftermarkets are drilled for both sizes

some original HIGH horse big cube were just original PONTIAC flwheels were 11" only

go with a diaphram clutch cover ... I like Center force ..

Scott
BLK69JUDGE is online now  
 
post #4 of 5 (permalink) Old 05-14-2019, 07:02 PM
 
Join Date: Dec 2012
Location: Gastonia, NC - Born & raised in Connecticut - 31 years
Posts: 3,330
Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 324 Post(s)
Garage
The Hays flywheel is drilled for both 10.5" and 11".

Use an 11" diaphram style pressure plate along with a matching 11" disc. Bigger disc provides more surface area to grab and you can benefit from a lighter spring pressure which makes your pedal pressure better.

Most clutch manufacturers have listings which will tell you what to expect from the pressure plate/disc set-up. There are different clutch materials to consider as well, some better for street while others are best for racing.

Where most get into trouble is to make sure you get the correct matching throw-out bearing not only for the set-up, but for your car. Often when you buy a kit, you get a Chevy application throw-out bearing which is too short in most instances. Then you push in the clutch and you can't get a clean release........then you have to pull everything apart again to install the correct length bearing. I have enclosed a photo as an example only, so you can see what I mean.
Attached Thumbnails
Click image for larger version

Name:	Long vs Short.jpg
Views:	20
Size:	31.8 KB
ID:	118947  
PontiacJim is offline  
post #5 of 5 (permalink) Old 05-15-2019, 07:42 AM
 
Join Date: Oct 2017
Posts: 570
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 123 Post(s)
I just went with a McLeod 11" flywheel and clutch. The pedal is very easy for every day driving. I am still breaking in the clutch (gently), so I cannot comment on how well it holds, but I am sure it will do just fine.

1965 GTO Convertible 3 speed tri-power drum brakes originally

Current setup:
400 cu in with tri-power
4 speed Muncie
cij911 is online now  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 2004-2006 GTO > Drive train, suspension, alignment and brakes.

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)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
LS3 Clutch and Flywheel upgrade Bryce108 Drive train, suspension, alignment and brakes. 0 05-29-2017 08:17 PM
fidanza twin clutch and flywheel? banshee 2004-2006 GTO General Discussion 4 07-29-2008 09:24 PM
Clutch / flywheel opinions sdgoat Service, Maintenance and Technical Discussion 2 05-11-2006 07:27 PM

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