4 core radiator in a 76 What do I need? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

3x2GTO · 11-01-2019, 11:30 PM

I want to replace the aftermarket 2 core radiator in my 76 pickup with a good 4 core from an 84 silverado. The width is the same, but the 4 core is about 2" taller. I'm guessing I need a new top plate? Where to find one? Thanks!

Prong · 11-02-2019, 05:01 AM

Don't forget the upper and lower radiator cushions--they're likely different.

3x2GTO · 11-02-2019, 07:17 AM

Thanks for the info, I THINK I have it figured out. I wasn't aware that there was two styles of radiators, short and tall. I have the short which is original to my truck. Looks like a top plate, cushions and a few nuts welded in and I'll be good. My next thing is going to be replacing the T350 with a 400 tranny.

Justins76 · 11-03-2019, 02:55 AM

You need a taller fan shroud too. I got my parts from LMC Truck when I swapped mine out.

3x2GTO · 11-03-2019, 09:44 AM

Thanks, I didn't think about the shroud being different. My truck has a 350 engine, Is the top plate for the tall radiator the same for all engines? I'm going to the salvage yard Saturday and they should have several plates already taken off.

**hatzie** · 11-04-2019, 07:13 AM

You may have to get out your tape measure.

Height and width can vary but I thought the thickness of the tank was the same with more or fewer rows of tubes in the core that was soldered onto the ends.

Measure from tank to tank at the join for the width and the height of the tank at the join for the height.

**Factory Guy** · 11-13-2019, 09:41 PM

. Posted in error

11-01-2019, 11:30 PM	#1
3x2GTO Registered User Join Date: Dec 2017 Location: Missouri Posts: 282	4 core radiator in a 76 What do I need? I want to replace the aftermarket 2 core radiator in my 76 pickup with a good 4 core from an 84 silverado. The width is the same, but the 4 core is about 2" taller. I'm guessing I need a new top plate? Where to find one? Thanks!

11-02-2019, 05:01 AM	#2
Prong Registered User Join Date: May 2007 Location: CO Posts: 475	Re: 4 core radiator in a 76 What do I need? Don't forget the upper and lower radiator cushions--they're likely different.

11-02-2019, 07:17 AM	#3
3x2GTO Registered User Join Date: Dec 2017 Location: Missouri Posts: 282	Re: 4 core radiator in a 76 What do I need? Thanks for the info, I THINK I have it figured out. I wasn't aware that there was two styles of radiators, short and tall. I have the short which is original to my truck. Looks like a top plate, cushions and a few nuts welded in and I'll be good. My next thing is going to be replacing the T350 with a 400 tranny.

11-03-2019, 02:55 AM	#4
Justins76 OutOfMyMind & I'llNeverKnowWhy Join Date: Apr 2004 Location: Another world, some other time Posts: 672	Re: 4 core radiator in a 76 What do I need? You need a taller fan shroud too. I got my parts from LMC Truck when I swapped mine out. __________________ -Justin-Out of my mind and I'll never know why 1976 Chevrolet Silverado C10 350 4bbl / TH350 Big10 longbed 1986 Pontiac Firebird T-Top 5.0L TPI 700R4 WS6 1992 Pontiac Firebird T-Top 5.0L TBI 700R4 My cardomain page I don't like to save, it's more fun to spend!!

11-03-2019, 09:44 AM	#5
3x2GTO Registered User Join Date: Dec 2017 Location: Missouri Posts: 282	Re: 4 core radiator in a 76 What do I need? Thanks, I didn't think about the shroud being different. My truck has a 350 engine, Is the top plate for the tall radiator the same for all engines? I'm going to the salvage yard Saturday and they should have several plates already taken off.

11-04-2019, 07:13 AM	#6
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: 4 core radiator in a 76 What do I need? You may have to get out your tape measure. Height and width can vary but I thought the thickness of the tank was the same with more or fewer rows of tubes in the core that was soldered onto the ends. Measure from tank to tank at the join for the width and the height of the tank at the join for the height. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

11-13-2019, 09:41 PM	#7
Factory Guy Senior Member Join Date: Jun 2019 Location: Midway USA Kentucky Posts: 566	Re: 4 core radiator in a 76 What do I need? . Posted in error



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