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Looking like my radiator needs to be replaced. Can I get some advice on how difficult the job is on a ’78 Corvette with A/C? Does the hood need to be removed, and what should I expect for cost?
I removed my 78 for repair without remoiviing the hood but its easier if the hood is removed. Have to be more careful.
You're going to remove fan shroud, belts, radiator fan, along with the alternator and compressor...or move compressor aorund with hoses attached (if A/C). An L82 is a bigger radiator vs. L48. I took pictures and notes I'll search around to seem if they would be of help.This is an L48 automatic.
Why wait...here's the engine compartment somewhat bare less engine. You'll see the radiator in place but I have removed everything with radiator removal next step. I took the compressor off...it needed to be rebuilt. I was in process of replacing engine gaskets, refurbish and paint engine and general engine compartment refresh to factory materials and finishes. one that would comply with an NCRS top flight TIMJG event. If its an automatic...then tranny lines have to be removed and that means fluid catch or flush tranny. Did that too.
I stand corrected that is the A/C condenser assembly. Radiator has been removed.
Last edited by hunt4cleanair; Feb 10, 2026 at 05:09 AM.
On my 77 with A/C I removed the 2 top bolts from the hood support (fold it out of the way) and with a extendable paint pole I was able to prop the hood open a few extra inches.
I would remove the hood. But before you do that, scribe an outline around the hinges which will make putting it back much easier. Not sure of your plans or determination to keep it original, but a lot of us have had success with Champion aluminum radiators.
79 l82 manual here.with OEM AUX electric fan . i did not remove hood etc..NOTE- no air pump on mine to deal with, you may have to move.
time for some detailing and new foam seals!
Also suggest 2 people in and out with cardboard protecting rad and condenser .. i called it the marriage tester getting it out ..
Appreciate everyone’s input. I’m planning on replacing it probably next month, and I’ll be sure to give feedback once the job is completed.
Thank you all!!!!
Finally getting around to installing the new radiator — life had taken over for a bit. I’ve pulled the water pump, thermostat, radiator, and shroud. Now I’m a little concerned about putting everything back in. I’m planning to follow the manual and go shroud first, then the radiator, but wow… it’s tight in there. Really hoping I don’t ding up the new radiator on the way in.
Finally getting around to installing the new radiator — life had taken over for a bit. I’ve pulled the water pump, thermostat, radiator, and shroud. Now I’m a little concerned about putting everything back in. I’m planning to follow the manual and go shroud first, then the radiator, but wow… it’s tight in there. Really hoping I don’t ding up the new radiator on the way in.
Tape some cardboard/pasteboard over the core areas.
Hi guys, appreciate all the input. I followed all the advice — cleaned the entire radiator core area and found no corrosion. Installed the new radiator with both sides protected by cardboard. And for the final test… I risked my marriage by asking my wife for help, but I’m still alive. Almost there now. Planning to install a new water pump and thermostat tomorrow.
FWIW I had mine done by my go to Vette guy who was not really a Vette guy but I bought the radiator from a Vette Vendor and he replaced it
with no issues several years ago and it's still running or should I say cooling strong............
Hey, just wanted to say thanks again — some great information was shared. I wrapped everything up today: new radiator, water pump, thermostat, radiator cap, upper and lower hoses, and the heater core was replaced about two months ago. Next on the list will be the heater shutoff valve and new heater hoses. Taking her out for a drive tomorrow. Thanks to all you guys.
It's important to also replace all the sponge seals around the radiator and core. It really makes a difference forcing the air to go thru the radiator core and not around it.
78 Corvette Radiator replacement
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