COPO Chevelle radiator

**Alss** · #1 05-21-2005, 02:35 AM

What is the correct radiator set up....3-core or 4-core? tank codes etc. I have a used Harrison radiator I bought for the tanks..is a three core out of a 69 wagon. Not sure of the tanks codes but will check later. Thanks

ALbert

**micky69396** · #2 05-23-2005, 07:02 AM

A BO code radiator is what I have had in the 4 speed COPOs we have had in.

Keith Tedford · #3 05-25-2005, 09:34 PM

Our 4 speed car also came with the BO rad.

**Alss** · #4 05-26-2005, 02:00 AM

Thanks guys...but is it a 4 or 3 core? I'll have a Harrison rad when I'm done but it may not have the correct code. Would be a difficult piece to find...the correct code tanks. Thanks

Albert

**Mr70** · #5 05-26-2005, 07:41 AM

The BO & BQ 1969 radiator is a 3 core.

**Alss** · #6 05-26-2005, 02:43 PM

Thank you Rick

ALbert

**9566 BA** · #7 05-30-2005, 01:15 AM

Albert
The radiator out of my 69 L/78 chevelle is a 3 core and marked BQ. There is also an XJ stamped in the tank.

**Alss** · #8 05-30-2005, 05:20 AM

Thanks Jeff

ALbert

Keith Tedford · #9 05-31-2005, 02:20 AM

Our rad has the same tag as Jeff's. I took it to be an "O" with a slash through it. Whatever, they are the same and are three core. We had the rad in our 455 Lemans done with a high density core and it is more than adequate in the cooling department. Our 427 never had a problem either. Mind you we don't get 120 degree weather here either. Low 90s at the worst.

L78M22Rag · #10 01-06-2016, 10:33 PM

Would a 3-core radiator also be correct for a TH400 automatic COPO Chevelle, and what markings and/or codes would be correct?

Tanks a-lot!

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