cooling a zz4
Thread Starter
Racer
Joined: Jun 2003
Posts: 405
Likes: 0
From: Long Island NY
cooling a zz4
Any zz4 owners out there..I was wondering how do you keep it cool?Electric fan..if so what size and cfm's? standard 4 blade fan? flex fan? do they run hot ..like some of the old engines in traffic?
Racer
Joined: May 2002
Posts: 280
Likes: 0
From: Poughkeepsie New York
Re: cooling a zz4 (newbe60)
I installed the ZZ4 in my 79. I did replace the radiator with a 4 row. Other than that, using stock configuration. Engine runs at 180 degrees, never have had a problem with running hot.
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
Re: cooling a zz4 (newbe60)
I installed a Stewart stage 2 water pump and ran the stock fan with the stock radiator in my 71 for a while. I just recently installed a 16 inch SPAL fan and I love it. It really cleaned up the engine compartment, and the only draw back is the power it took so now I upgraded the alternator.
Team Owner
Joined: May 2001
Posts: 29,745
Likes: 3
From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Re: cooling a zz4 (Sigforty)
I have the ZZ4 in my 1980. I have the stock type radiator, an Edelbrock aluminum water pump. I have run with the stock belt driven fan and now have the dual 11" Spal's. Both cooled the motor just fine.
Pro
Joined: Apr 2000
Posts: 625
Likes: 0
From: The Villages FL
Re: cooling a zz4 (newbe60)
We built a new crate ZZ4 to ax. 430 HP and cooled it with an aluminum radiator and a set of GM fans from a 1990 Corvette. We sourced them at a swap meet and replaced both motors with new ones from a Chevy dealer.
The ZZ4 was sold when we decided to use the LS6, but we are keeping the same cooling system.
Spike
The ZZ4 was sold when we decided to use the LS6, but we are keeping the same cooling system.
Spike
Team Owner
Joined: Dec 1999
Posts: 26,555
Likes: 257
From: Florida
2021 C2 of the Year Finalist - Modified
C2 of the Year Finalist - Modified 2020
C2 of Year Finalist (performance mods) 2019
St. Jude Donor '03 thru '26
Re: cooling a zz4 (spikezz4)
No ZZ4 here, but always ran at 210. Installed a "Super Kool Waterpump" and consistently stay at 180 now. Something to think about just in case. :)
Melting Slicks
Joined: Apr 1999
Posts: 3,264
Likes: 3
From: Toms River NJ
Re: cooling a zz4 (Sigforty)
zz4 with hotcam...
stock radiator
stewart stage II pump and dual 11" spal fans kit
No problems!! Runs between 175-200..fluctuating as the fans turn on nad off...
stock radiator
stewart stage II pump and dual 11" spal fans kit
No problems!! Runs between 175-200..fluctuating as the fans turn on nad off...
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