clutch Size and model
Thread Starter
Intermediate
Joined: Nov 2006
Posts: 48
Likes: 0
clutch Size and model
Hey guys and girls maybe you can help me .How do i find out what size clutch i have in my 1974 with the 4 speed.I would like to order it soon but i dont have the engine out to see what size.
Also what clutch are most of you guys using
I like a hard pedal myself
Also what clutch are most of you guys using
I like a hard pedal myself
Instructor
Joined: Mar 2006
Posts: 127
Likes: 0
From: Miami FL
good luck with this one, i asked the same thing last week and not only could no one give me a straight answer but i got flamed.
never heard of something more retarded then the same car having 4 different clutch combinations, and people telling me to crawl under the car to figure out which one i have
never heard of something more retarded then the same car having 4 different clutch combinations, and people telling me to crawl under the car to figure out which one i have
Drifting
Joined: May 2005
Posts: 1,629
Likes: 4
From: Somers CT
Well, you'd be better off waiting to see exactly what's under the bellhousing before you spend $$. There are 2 different size flywheels that were used for your car, 12 3/4" dia having 153 teeth and 14" dia having 168 teeth. The 168 tooth wheel used 10 1/2" or an 11" clutch while the 153 tooth only used a 10 1/2" clutch.
You can generally determine the size of the flywheel by looking at the starter bolts, if they're offset at an angle you'll have the 14" flywheel if they are in line you have the 12 3/4".
There are two spline counts on the transmission, 10 and 26. So make sure you not only get the right diameter clutch but also the right one for your transmission. Usually the 10 spline was for light duty and the 24 for heaver duty. When first got my car it was an L48 but someone had replaced the transmission and installed a 26 spline Muncie so you never know.
I have a Centerforce II clutch behind my ZZ4. It's a good clutch but probably more than I need. If I did it again I'd get a GM OEM type.
Bill
You can generally determine the size of the flywheel by looking at the starter bolts, if they're offset at an angle you'll have the 14" flywheel if they are in line you have the 12 3/4".
There are two spline counts on the transmission, 10 and 26. So make sure you not only get the right diameter clutch but also the right one for your transmission. Usually the 10 spline was for light duty and the 24 for heaver duty. When first got my car it was an L48 but someone had replaced the transmission and installed a 26 spline Muncie so you never know.
I have a Centerforce II clutch behind my ZZ4. It's a good clutch but probably more than I need. If I did it again I'd get a GM OEM type.
Bill
Last edited by TopGunn; Mar 1, 2007 at 06:58 PM.
Drifting
Joined: Sep 2006
Posts: 1,259
Likes: 2
From: MS
Don't know any 10.4 inch clutch application for 1974, all should be 11 inch with the 168 tooth flywheel.
Last 10 spline tranny was 1970 so if original tranny, it will be 26 spline with no differentation between LD and HD. All 64-70 Muncies were 10 spline and all 71-74s were 26 spline. Even if you have the Warner T-10 in your 74, it will be 26 spline.
Last 10 spline tranny was 1970 so if original tranny, it will be 26 spline with no differentation between LD and HD. All 64-70 Muncies were 10 spline and all 71-74s were 26 spline. Even if you have the Warner T-10 in your 74, it will be 26 spline.
