zz4 with 4spd
Thread Starter
Racer
Joined: Feb 2005
Posts: 399
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From: wharton tx
zz4 with 4spd
anyone know what flywheel i need to use to run my zz4 motor?
my car is a 78 4spd vette with a warner tranny,
can i use my existing flywheel and same clutch and pressure plate or is their some kind of conversion i have to do?
some research i've done says the flywheel has a weight on it,the one off my 78 doesn't have a weight on it,
is the zz4 motor an internally or externally balanced motor
any help would be grateful. thanks
my car is a 78 4spd vette with a warner tranny,
can i use my existing flywheel and same clutch and pressure plate or is their some kind of conversion i have to do?
some research i've done says the flywheel has a weight on it,the one off my 78 doesn't have a weight on it,
is the zz4 motor an internally or externally balanced motor
any help would be grateful. thanks
Race Director
Joined: Jun 2000
Posts: 10,045
Likes: 675
From: FL
You need the flywheel for a late model Gen I SBC with the one piece rear main seal. These have the balance weight and 3.00" bolt circle vice the 3.58" bolt circle for the older small blocks.
http://www.sdpc2000.com/catalog/3181...-Flywheels.htm
GM part number 10105832 is a 14" flywheel, 10105832 is a lightweight 12-3/4" flywheel. Edit to add 14088650 is the normal 12-3/4" flywheel.
You can reuse the clutch but a new one is cheap insurance while you have the drivetrain apart. You may need to change the clutch anyway based on what size you have for what flywheel. The 14" flywheel is drilled for an 11" or 11.85" clutch bolt circle. The 12.75" requires a 10.4" clutch and the lightweight flywheel requires a 10" clutch.
If you change flywheel size, you will need a new starter as well.
http://www.sdpc2000.com/catalog/3181...-Flywheels.htm
GM part number 10105832 is a 14" flywheel, 10105832 is a lightweight 12-3/4" flywheel. Edit to add 14088650 is the normal 12-3/4" flywheel.
You can reuse the clutch but a new one is cheap insurance while you have the drivetrain apart. You may need to change the clutch anyway based on what size you have for what flywheel. The 14" flywheel is drilled for an 11" or 11.85" clutch bolt circle. The 12.75" requires a 10.4" clutch and the lightweight flywheel requires a 10" clutch.
If you change flywheel size, you will need a new starter as well.
Last edited by SteveG75; Oct 8, 2006 at 05:20 AM.
Race Director
Joined: Jun 2000
Posts: 10,045
Likes: 675
From: FL
Originally Posted by garay77n84
thanks alot ,i have 26 spline on my tranny input shaft,i have only found clutch sets with 10 splines.
www.summitracing.com
www.jegs.com
