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#1 |
Registered User
Join Date: Jul 2015
Location: Ogden
Posts: 22
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Radiator R&R and upgrade, OEM + ?
My rad in my 90 c1500 pos/project took a dive.....I eventually want to swap to an LS 5.3/6.0 -4l80e, it has a 4.3 5spd in it now.
I was wondering what would be the way to go on replacing the leaking rad with something that I could use on both the 4.3 for now and still be adequate for the eventual LS/Auto? Is there an OEM solution, 454 rad,5.7 vortec years, 2500+ radiator, etc etc etc? I've read horror stories about the cheap full aluminium one of ebay and the like, and the plastic china replicas breaking at the upper bung/hose on the tank. TIA |
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#2 |
Registered User
Join Date: Oct 2009
Location: .
Posts: 2,185
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Re: Radiator R&R and upgrade, OEM + ?
The cores are different widths between the ranks. You can go bigger, but you’ll need a fan shroud that will fit the core of the radiator, and the cooling fan.
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#3 |
State of Confusion!
![]() ![]() Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,858
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Re: Radiator R&R and upgrade, OEM + ?
I've replaced several V6 GM trucks with one I got from Oriellys for like $100. Never had an issue with anything on them. For that Price I would just replace it, and work out the detials later for what will work whent you engine swap.
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! Last edited by Palf70Step; 05-15-2019 at 07:28 AM. |
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#4 |
Registered User
Join Date: Oct 2009
Location: .
Posts: 2,185
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Re: Radiator R&R and upgrade, OEM + ?
Ranks should be tanks in my last post.
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#5 |
driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,720
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Re: Radiator R&R and upgrade, OEM + ?
Upgrade to the biggest oem one you can fit. I put the 4 row oem style autozone lifetime warranty one in my 98 to replace the 2 row and I literally can't get it to go 10* over the thermostat opening temp in AZ 118* heat in traffic. Bigger is better in this case.
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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#6 |
Registered User
Join Date: Oct 2018
Location: San Diego, CA
Posts: 13
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Re: Radiator R&R and upgrade, OEM + ?
I installed an O'reilly's factory replacement about 4K miles ago. So far so good. As said above, it's relatively cheap and works. Worry about the LS radiator when you get there.
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John Brown 1990 Chevrolet C1500 Silverado Regular Cab Step Side - 350 Auto Ridetech StreetGRIP Suspension Instagram @wilwaxu |
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Tags |
4.3l v6, ls swap, oem, project truck, radiator |
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