help, 4-core upgrade parts requirements - The 1947 - Present Chevrolet & GMC Truck Message Board Network

454HO · 01-31-2008, 05:48 AM

I have a practically brand new 4-core copper/brass radiator that I bought for my '77 454 that I now want to install into the '86 I have. The '86 is getting a 454 swapped in place of the stock 305.

I realized the rubber support pads were different, as well as the fan shroud, so I ordered those parts new from LMC. Now I just figured out the 2 upper mounting brackets that were on there originally do not work with the thicker radiator. I see LMC has an upper panel listed that appears specific to a 454 truck. Is this the last piece I need to order, or is there anything else I am missing????

Part I already oredered:
pads - item #10, p/n 32-0972, qty 4
shroud - item #3, p/n 32-2850, qty 1

Parts I still need:
panel - item #18, p/n 32-0988, qty 1
??????

Oh yeah, I intend to use the fan and clutch that came with the engine. It is a 2000 Vortec 7400. Any reason it would not work with this shroud?? The diameter appears okay. Not sure about the depth just yet.

**N2TRUX** · 01-31-2008, 02:13 PM

What about a fan shroud? They are different too.

gchemist · 01-31-2008, 05:09 PM

Part #18.
Order a zinc anode from www.summitracing.com.
The anode will help reduce corrosion.

Here is a picture.

454HO · 02-01-2008, 04:46 AM

Ken, I already got the fan shroud and support pads.

gchem, thanks for the confirmation. I will get the #18 panel ordered. Also, from your picture it looks like you put something between the panel and the core support. What is that?

Prerunner1982 · 02-02-2008, 04:10 AM

Here is a pic of my 4 core upper rad support. Not quite as pretty a G's...

Dean · 02-03-2008, 02:16 AM

I have repaced all the pieces with new on my 87 K30 also if you need pics or numbers. I got it all from GM but my discount helps that a little.

gchemist · 02-03-2008, 04:22 AM

Quote:

Originally Posted by 454HO

Ken, I already got the fan shroud and support pads.

gchem, thanks for the confirmation. I will get the #18 panel ordered. Also, from your picture it looks like you put something between the panel and the core support. What is that?

You need two upper rubber spacers. The spacers go between bracket and radiator. Two more spacers go on bottom too.

01-31-2008, 02:13 PM	#2
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: help, 4-core upgrade parts requirements What about a fan shroud? They are different too. __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

02-01-2008, 04:46 AM	#4
454HO Registered User Join Date: Apr 2005 Location: Austin, TX Posts: 1,223	Re: help, 4-core upgrade parts requirements Ken, I already got the fan shroud and support pads. gchem, thanks for the confirmation. I will get the #18 panel ordered. Also, from your picture it looks like you put something between the panel and the core support. What is that? __________________ - Greg

02-02-2008, 04:10 AM	#5
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,904	Re: help, 4-core upgrade parts requirements Here is a pic of my 4 core upper rad support. Not quite as pretty a G's... __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

02-03-2008, 02:16 AM	#6
Dean Senior Member Join Date: Jan 2000 Location: Cincinnati, Ohio Posts: 1,492	Re: help, 4-core upgrade parts requirements I have repaced all the pieces with new on my 87 K30 also if you need pics or numbers. I got it all from GM but my discount helps that a little.

01-31-2008, 05:48 AM	#1
454HO Registered User Join Date: Apr 2005 Location: Austin, TX Posts: 1,223	help, 4-core upgrade parts requirements I have a practically brand new 4-core copper/brass radiator that I bought for my '77 454 that I now want to install into the '86 I have. The '86 is getting a 454 swapped in place of the stock 305. I realized the rubber support pads were different, as well as the fan shroud, so I ordered those parts new from LMC. Now I just figured out the 2 upper mounting brackets that were on there originally do not work with the thicker radiator. I see LMC has an upper panel listed that appears specific to a 454 truck. Is this the last piece I need to order, or is there anything else I am missing???? Part I already oredered: pads - item #10, p/n 32-0972, qty 4 shroud - item #3, p/n 32-2850, qty 1 Parts I still need: panel - item #18, p/n 32-0988, qty 1 ?????? Oh yeah, I intend to use the fan and clutch that came with the engine. It is a 2000 Vortec 7400. Any reason it would not work with this shroud?? The diameter appears okay. Not sure about the depth just yet. __________________ - Greg

01-31-2008, 05:09 PM	#3
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: help, 4-core upgrade parts requirements Part #18. Order a zinc anode from www.summitracing.com. The anode will help reduce corrosion. Here is a picture. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos



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