Wanting to put a bigger radiator with more cores will this cause fitment issues - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**blazercrazy70** · 12-11-2012, 05:34 AM

I have a two core radiator would like to go with more cores if I use a stock copper core radiator will there be any fitment issues Anybody know somebody on the forum with good buys on radiators

bobs409 · 12-11-2012, 08:13 AM

These trucks had an optional 4 core radiator so you could go with that. Was used on AC trucks or the optional heavy duty radiator.

mrein3 · 12-11-2012, 09:51 AM

Quote:

Originally Posted by blazercrazy70

I have a two core radiator would like to go with more cores if I use a stock copper core radiator will there be any fitment issues Anybody know somebody on the forum with good buys on radiators

It WILL cause fitment issues if you go from a 2 or 3 core to a 4 core. I purchased ALL the parts I needed off the internet. You need a 4 core radiator of course. You'll also need different bottom and top mounts and cushions.

The real crummy part of this job is getting your old mounts off the bottom of the core support. They are riveted on. Once they are out of the way the rest is easy.

When I got done with mine I ended up with the whole assembly too tall for my fan shroud. I made a simple little "shroud extender" for lack of a better term.

I paid on the order of $200 for a new 4 core radiator shipped to my door. I used "Radiator Doctor" or "Mister Radiator" or some other fly-by-night ebay store. Since then I believe over the counter stores like O'Reilys and NAPA offer the same price. About $200.

PanelDeland · 12-11-2012, 10:33 AM

On the lower mounts,all you need is a drill to drill out the rivets or a grinder to grind them off.The 4 core is wider.I used a stove bolt on each new bottom bracket.On top the bolt holes are already there.If you look,you can move the top bracket over the 2 inches or so.It took me longer to gather parts than to do the swap.The lowers will require you to relieve the lip on the core support where the new mount goes.
You will probably have to have a new fan spacer to clear the radiator,I spent $8 or so at Advance.Get everything mounted before you buy so you can measure what length you need.

**nightmare** · 12-11-2012, 11:53 AM

mine originally came with a 4 core, but when I needed to replace it I purchased my 4-core radiator from Advance Auto Online. Free Shipping to my house, plus there was a discount for some promotion they were doing.

**nightmare** · 12-11-2012, 11:58 AM

Just looked. $219.99 for part number 433366, 3-core radiator, and with 15% off, looks like $186.99 plus free shipping to your house.

The 4-core is $264.99 for part number 433369, with 15% off is $225.25.

Davemotohead · 12-11-2012, 01:08 PM

I stole a monster out of a suburban,,anything will fit if you modify it and have a Big Hammer!!

GASoline71 · 12-11-2012, 02:03 PM

I think I would just spend the cash on a radiator that actually fits.

Gary

**blazercrazy70** · 12-13-2012, 04:23 AM

Thanks for the help guys

12-11-2012, 05:34 AM	#1
blazercrazy70 Senior Member Join Date: Sep 2006 Location: illinois Posts: 516	Wanting to put a bigger radiator with more cores will this cause fitment issues I have a two core radiator would like to go with more cores if I use a stock copper core radiator will there be any fitment issues Anybody know somebody on the forum with good buys on radiators

12-11-2012, 08:13 AM	#2
bobs409 1969 Custom 30 wrecker Join Date: Sep 2001 Location: Pottsville, Pa Posts: 2,611	Re: Wanting to put a bigger radiator with more cores will this cause fitment issues These trucks had an optional 4 core radiator so you could go with that. Was used on AC trucks or the optional heavy duty radiator. __________________ Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10

12-11-2012, 10:33 AM	#4
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: Wanting to put a bigger radiator with more cores will this cause fitment issues On the lower mounts,all you need is a drill to drill out the rivets or a grinder to grind them off.The 4 core is wider.I used a stove bolt on each new bottom bracket.On top the bolt holes are already there.If you look,you can move the top bracket over the 2 inches or so.It took me longer to gather parts than to do the swap.The lowers will require you to relieve the lip on the core support where the new mount goes. You will probably have to have a new fan spacer to clear the radiator,I spent $8 or so at Advance.Get everything mounted before you buy so you can measure what length you need. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

12-11-2012, 01:08 PM	#7
Davemotohead Registered User Join Date: Sep 2011 Location: rosamond ca Posts: 130	Re: Wanting to put a bigger radiator with more cores will this cause fitment issues I stole a monster out of a suburban,,anything will fit if you modify it and have a Big Hammer!! Attached Images __________________ edited by staff

12-13-2012, 04:23 AM	#9
blazercrazy70 Senior Member Join Date: Sep 2006 Location: illinois Posts: 516	Re: Wanting to put a bigger radiator with more cores will this cause fitment issues Thanks for the help guys



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