Radiator recommendations ? - ZR-1 Net Registry Forums

ZWILD1 · 01-28-2019

My son and I plan on making the trip to BG this year and I plan on installing new hoses and was thinking about replacing the factory radiator with a larger aluminum one. Who makes a good radiator to drop in? I replaced the radiator on my first ZR1 and my 96 LT1 car with a factory style but not worried about the car looking original.

secondchance · 01-28-2019

I installed Dewitt Pro Series which has two rows 1" pipes. Much better quality and no longer worried about plastic side tanks busting on OEM radiator.

https://www.dewitts.com/collections/...minum-radiator

GOLDCYLON · 01-28-2019

Dewitt

Jagdpanzer · 01-28-2019

Dewitt has their annual 15% off sale still going on until February 2nd.

Sent from my iPhone using ZR-1 Net Registry

Karl · 01-28-2019

I purchased a DeWitt radiator on sale over the holidays along with silicone hoses and a new heater core.

RussMcB · 01-28-2019

I went with Dewitt, too. I'm happy with the end result but it was more work than I expected. Afterwards, though, you'll have great peace of mind, especially if you plan to do some laps at the track.

Maybe budget extra time in case you need to walk away from it for a while and take a break.

In other words, don't do it on the Wednesday night before you leave for BG. :-).

Dynomite · 01-29-2019

Ron Davis, Fluidyne, Other Multicore Aluminum......Just to add some choices

All perform perfectly

ZWILD1 · 01-29-2019

As I remember the OEM style went in pretty much straight forward. Is the Dewitt more difficult? The thing I hated was changing out the hoses going to the thermostat. I ended up going to Sears back in the day and buying a remote hose clamp tool to make dealing with the factory style clamps easier but it was still a pain.

ZR1North · 01-31-2019

I too went with the DeWitts that others mentioned. Marc did the replacement when he did the 510 pkg. I know he used my original GM hoses. The unit comes with a spacer bar that must be installed because of the rad thickness, but it is easy to install and does not diminish the underhood appearance. That's where my research led me, and I am extremely happy with the product some five years in.

BlackZR1 · 02-02-2019

Quote:

Originally Posted by Jagdpanzer

Dewitt has their annual 15% off sale still going on until February 2nd.

Thanks for the tip, just placed my order.
Plastic tank is weeping at the crimped joint.

01-28-2019	#1
ZWILD1 Join Date: Aug 2004 Location: Spring Grove ,Pa. Posts: 256	Radiator recommendations ? My son and I plan on making the trip to BG this year and I plan on installing new hoses and was thinking about replacing the factory radiator with a larger aluminum one. Who makes a good radiator to drop in? I replaced the radiator on my first ZR1 and my 96 LT1 car with a factory style but not worried about the car looking original. __________________ 91 Turquoise Metallic Haibeck 525 #0134

01-28-2019	#2
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,719	Re: Radiator recommendations ? I installed Dewitt Pro Series which has two rows 1" pipes. Much better quality and no longer worried about plastic side tanks busting on OEM radiator. https://www.dewitts.com/collections/...minum-radiator

01-28-2019	#3
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,120	Re: Radiator recommendations ? Dewitt __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

01-28-2019	#4
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,646	Re: Radiator recommendations ? Dewitt has their annual 15% off sale still going on until February 2nd. Sent from my iPhone using ZR-1 Net Registry __________________ Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake

01-28-2019	#5
Karl Join Date: May 2013 Location: Chicago Posts: 982	Re: Radiator recommendations ? I purchased a DeWitt radiator on sale over the holidays along with silicone hoses and a new heater core. Last edited by Karl; 01-28-2019 at 05:22 PM.

01-28-2019	#6
RussMcB Join Date: Jan 2015 Location: Marietta, GA USA Posts: 1,148	Re: Radiator recommendations ? I went with Dewitt, too. I'm happy with the end result but it was more work than I expected. Afterwards, though, you'll have great peace of mind, especially if you plan to do some laps at the track. Maybe budget extra time in case you need to walk away from it for a while and take a break. In other words, don't do it on the Wednesday night before you leave for BG. :-).

01-29-2019	#7
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,809	Re: Radiator recommendations ? Ron Davis, Fluidyne, Other Multicore Aluminum......Just to add some choices All perform perfectly __________________ Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS

01-29-2019	#8
ZWILD1 Join Date: Aug 2004 Location: Spring Grove ,Pa. Posts: 256	Re: Radiator recommendations ? As I remember the OEM style went in pretty much straight forward. Is the Dewitt more difficult? The thing I hated was changing out the hoses going to the thermostat. I ended up going to Sears back in the day and buying a remote hose clamp tool to make dealing with the factory style clamps easier but it was still a pain. __________________ 91 Turquoise Metallic Haibeck 525 #0134

01-31-2019	#9
ZR1North Join Date: Feb 2007 Location: Komoka, Ontario, Canada Posts: 597	Re: Radiator recommendations ? I too went with the DeWitts that others mentioned. Marc did the replacement when he did the 510 pkg. I know he used my original GM hoses. The unit comes with a spacer bar that must be installed because of the rad thickness, but it is easy to install and does not diminish the underhood appearance. That's where my research led me, and I am extremely happy with the product some five years in. __________________ 1991 ZR-1 (SN666) - Haibeck 510; 410s, Corsa, SW Headers; Hurst SS; DeWitts Rad; RC Injectors; LEDs throughout; `93 MF Sawblades 2016 Z06 - Stock 1971 Stingray 454 LS5 - Sold

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