ZZ4 engine..What flywheel/clutch???
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 2,527
Likes: 1
From: St. Petersburg, Fl///Columbus, Ohio
ZZ4 engine..What flywheel/clutch???
I just rebuilt a 350 "R" motor from a '97 suburban
dropped in a ZZ4 cam and a few other minor changes, so I pretty much have an Iron Head ZZ4 engine
What flywheel/clutch do I need to bolt up to my 1973 Trans???
dropped in a ZZ4 cam and a few other minor changes, so I pretty much have an Iron Head ZZ4 engine
What flywheel/clutch do I need to bolt up to my 1973 Trans???
Instructor
Joined: May 2004
Posts: 199
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From: Santa Monica CA
Sounds like the setup I've got... I just dropped a ZZ4 in my 73 last weekend. I couldn't figure out for sure if the stock clutch can handle the power of the ZZ4 - some people said yes, some said no - so I decided to put in a performance clutch. I went with the Hayes 11" street clutch and the stock 168-tooth flywheel. You may have to upgrade your starter as well.
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 2,527
Likes: 1
From: St. Petersburg, Fl///Columbus, Ohio
Originally Posted by humiliategravity
Sounds like the setup I've got... I just dropped a ZZ4 in my 73 last weekend. I couldn't figure out for sure if the stock clutch can handle the power of the ZZ4 - some people said yes, some said no - so I decided to put in a performance clutch. I went with the Hayes 11" street clutch and the stock 168-tooth flywheel. You may have to upgrade your starter as well.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
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From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
You cannot use the old flywheel because it is for a two piece rear main seal. You need to purchase a new flywheel for a one piece rear main seal engine. I believe when I put the zz4 in my 71 I use flywheel GM#10105832. I also used a Hayes street strip clutch when I put in the ZZ4. The clutch from Hayes works really great.
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 2,527
Likes: 1
From: St. Petersburg, Fl///Columbus, Ohio
Originally Posted by Sigforty
You cannot use the old flywheel because it is for a two piece rear main seal. You need to purchase a new flywheel for a one piece rear main seal engine. I believe when I put the zz4 in my 71 I use flywheel GM#10105832. I also used a Hayes street strip clutch when I put in the ZZ4. The clutch from Hayes works really great.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
The clutch was a 26 spline diaphram style frm Hayes. It was the clutch they recommend for a 71 vette with a 14 inch flywheel and a 26 spline input shaft.
Instructor
Joined: May 2004
Posts: 199
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From: Santa Monica CA
Originally Posted by jcswm
So you were able to (or could have) used your old flywheel????
Dave
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Le Mans Master
Joined: Apr 2001
Posts: 5,941
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From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
The zz4 comes with a flexplate which is for an automatic transmission. Normally is not as thick as a flywheel and has holes in it to reduce weight. A flywheel is for a manual transmission and is a solid wheel with a surfaced side for the clutch.
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 2,527
Likes: 1
From: St. Petersburg, Fl///Columbus, Ohio
I'll be at Jeg's next weekend.... Is there a kit???
IT'S 1:07am 8/28/04
I'm about to become a grandpa .... So I'm flying home to see my little girl this weekend.. sept 2-7th.... Hopefully the little **** is born by then!!!! LOL..... just kidding..... kinda!
Anyway..... Jeg's is 5 mles away..... what do I need to put this killer engine in my car??????? '97 Vortec into a '73 4-speed
flywheel GM#10105832 is currently on backorder!!!
IT'S 1:07am 8/28/04
I'm about to become a grandpa .... So I'm flying home to see my little girl this weekend.. sept 2-7th.... Hopefully the little **** is born by then!!!! LOL..... just kidding..... kinda!
Anyway..... Jeg's is 5 mles away..... what do I need to put this killer engine in my car??????? '97 Vortec into a '73 4-speed
flywheel GM#10105832 is currently on backorder!!!
Last edited by jcswm; Aug 28, 2004 at 01:11 PM.
