summit radiator - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Pont406 · 05-31-2009, 03:44 PM

Before I was running a 4 row radiator. Nothing was wrong with it and I had it boil out. Around town it was running at 175-180. On the freeway it was running hot 210-220. 4 row radiaotor just wasn't getting enough air through it at high speed.
I installed a summit universal 2 row radiator and aux trans cooler rated at 17000 GVW. With no other changes now it runs at 165 and 175 on the freeway. Fans only come on when idling for 15 min or more and temperature comes right down to 160. So far I am happy with it.

68gmsee · 05-31-2009, 03:50 PM

Do you know what brand of 4 row radiator you had?

A lot of people recommend them to keep the engine running cooler, but as you mentioned, there's also air movement restriction to consider.

I wonder if it's true of all 4 core or just certain brands? Maybe someone else can post their experience since I had been thinking of getting one.

Pont406 · 05-31-2009, 03:55 PM

It was a harrison(sp?) 4 row radiator out of a 70 firebird. A little bigger compare to a stock 4 row. My car and truck both had the same problem with running hot on the freeway with 4 row.

Arad68 · 05-31-2009, 04:11 PM

That aluminum radiator is far more efficient. I have aluminum radiators in everything I own with similar results.

I ran a Desert cooler 4 row copper radiator in my Trans Am for a while and it struggled to keep the temp down with my A/C on. I bought a BeCool 2row aluminum radiator for it and it dropped the temp about 15 degrees from 220 in the same conditions.

The key is airflow

petey-pablo · 05-31-2009, 10:15 PM

Quote:

Originally Posted by Pont406

Before I was running a 4 row radiator. Nothing was wrong with it and I had it boil out. Around town it was running at 175-180. On the freeway it was running hot 210-220. 4 row radiaotor just wasn't getting enough air through it at high speed.
I installed a summit universal 2 row radiator and aux trans cooler rated at 17000 GVW. With no other changes now it runs at 165 and 175 on the freeway. Fans only come on when idling for 15 min or more and temperature comes right down to 160. So far I am happy with it.

How did that summit universal 2 row radiator Fit What size motor do you have? Did you have to modify anything to make it fit did you come across any problems installing it, Whats the Summit Part #? That summit radiator Looks good I have been thinking of buying one myself and those summit brand universal 2 row radiators have a good price...

jim zag · 06-01-2009, 05:47 AM

Aluminum radiators do a GREAT JOB!!!!

05-31-2009, 03:44 PM	#1
Pont406 Registered User Join Date: Aug 2007 Location: West Hills, California Posts: 679	summit radiator Before I was running a 4 row radiator. Nothing was wrong with it and I had it boil out. Around town it was running at 175-180. On the freeway it was running hot 210-220. 4 row radiaotor just wasn't getting enough air through it at high speed. I installed a summit universal 2 row radiator and aux trans cooler rated at 17000 GVW. With no other changes now it runs at 165 and 175 on the freeway. Fans only come on when idling for 15 min or more and temperature comes right down to 160. So far I am happy with it. Attached Images

05-31-2009, 03:50 PM	#2
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: summit radiator Do you know what brand of 4 row radiator you had? A lot of people recommend them to keep the engine running cooler, but as you mentioned, there's also air movement restriction to consider. I wonder if it's true of all 4 core or just certain brands? Maybe someone else can post their experience since I had been thinking of getting one.

05-31-2009, 03:55 PM	#3
Pont406 Registered User Join Date: Aug 2007 Location: West Hills, California Posts: 679	Re: summit radiator It was a harrison(sp?) 4 row radiator out of a 70 firebird. A little bigger compare to a stock 4 row. My car and truck both had the same problem with running hot on the freeway with 4 row.

05-31-2009, 04:11 PM	#4
Arad68 Trucks N Tranzams Join Date: Dec 2002 Location: North Las Vegas, Nevada Posts: 816	Re: summit radiator That aluminum radiator is far more efficient. I have aluminum radiators in everything I own with similar results. I ran a Desert cooler 4 row copper radiator in my Trans Am for a while and it struggled to keep the temp down with my A/C on. I bought a BeCool 2row aluminum radiator for it and it dropped the temp about 15 degrees from 220 in the same conditions. The key is airflow __________________ Don '68 Chevy LB 383 TH400/GV/373 posi '56 Chevy 4WD SWB '64 Chevy short stepside '79 Trans Am 455/TH2004R/12blt/4whldisc 95 Kia (Wifes car) 2002 S-10 extended cab pickup "God punishes small sins immediately"

06-01-2009, 05:47 AM	#6
jim zag ENGINE BUILDER Join Date: Apr 2006 Location: Shortsville n.y. Posts: 344	Re: summit radiator Aluminum radiators do a GREAT JOB!!!! __________________ JIM ZAG



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