Problems installing a 4-core! Help!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Tim Christian** · 09-04-2004, 10:08 PM

Hey guys, I am working on my truck(1967 GMC) again a little anyway! LOL The problem I am having is when I install the radiator(4-core) with the 4-core brackets and rubbers the radiator sits up to high and the top mounts will not work when I take the bottom brackets off and use the rubbers only it is still to high the thickness of the rubber. I can remove the bottom bracket and rubber then it sits prefect and the top mounts are fine. I know I have the right brackets, rubbers, and radiator. Whats the problem????

Please Help!

Tx Firefighter · 09-04-2004, 11:02 PM

Mine was the same way. I just used a little longer bolts on the upper retainers and tightened them down evenly. They tightened down against the core support like they're supposed to. Basically, I squeezed the rubbers into shape by torquing the bolts.

cableguy0 · 09-04-2004, 11:27 PM

yup what he ^^^ said i had the same problem when i converted to a 4 row they settled in nicely with a little persuasion

**Tim Christian** · 09-05-2004, 12:10 PM

So when I tighten everything down it will find its self!

Thanks Guys

walker · 09-05-2004, 09:31 PM

Ditto, did the same thing. I was using the old rubber pieces too. You might try putting some soap on the rubber parts, make 'em slip on a little easier.

Fred T · 09-05-2004, 11:13 PM

Don't know if it's right, but on a support I bought they had flattened the flange on the support so the brackets were at the right height.

72C203503ONTHETREE · 09-06-2004, 09:39 AM

Yes, you will have to flatten the raised edges where the lower mounts go in. I had to do that on my 72, nmo big deal. Actually, I used a hand grinder to grind it smooth and painted the bare metal to prevent rust. I didnt mount the lower mounts since I couldnt get under the radiator support unless I removed it. I just layed the mounts on the support and carefully put the radiator in and tightened it all down, no problems.

09-04-2004, 10:08 PM	#1
Tim Christian Senior Member Join Date: Dec 1999 Location: TN/VA Posts: 6,388	Problems installing a 4-core! Help!!! Hey guys, I am working on my truck(1967 GMC) again a little anyway! LOL The problem I am having is when I install the radiator(4-core) with the 4-core brackets and rubbers the radiator sits up to high and the top mounts will not work when I take the bottom brackets off and use the rubbers only it is still to high the thickness of the rubber. I can remove the bottom bracket and rubber then it sits prefect and the top mounts are fine. I know I have the right brackets, rubbers, and radiator. Whats the problem???? Please Help!

09-04-2004, 11:02 PM	#2
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Mine was the same way. I just used a little longer bolts on the upper retainers and tightened them down evenly. They tightened down against the core support like they're supposed to. Basically, I squeezed the rubbers into shape by torquing the bolts. __________________ I'm on the Instagram- @Gearhead_Kevin

09-04-2004, 11:27 PM	#3
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	yup what he ^^^ said i had the same problem when i converted to a 4 row they settled in nicely with a little persuasion __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

09-05-2004, 09:31 PM	#5
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	Ditto, did the same thing. I was using the old rubber pieces too. You might try putting some soap on the rubber parts, make 'em slip on a little easier. __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold

09-05-2004, 11:13 PM	#6
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	Don't know if it's right, but on a support I bought they had flattened the flange on the support so the brackets were at the right height. __________________ Fred There is no such thing as too much cam...just not enough engine.

09-05-2004, 12:10 PM	#4
Tim Christian Senior Member Join Date: Dec 1999 Location: TN/VA Posts: 6,388	So when I tighten everything down it will find its self! Thanks Guys

09-06-2004, 09:39 AM	#7
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	Yes, you will have to flatten the raised edges where the lower mounts go in. I had to do that on my 72, nmo big deal. Actually, I used a hand grinder to grind it smooth and painted the bare metal to prevent rust. I didnt mount the lower mounts since I couldnt get under the radiator support unless I removed it. I just layed the mounts on the support and carefully put the radiator in and tightened it all down, no problems. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.



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