To Hot!!!
Racer
Joined: Jul 2016
Posts: 346
Likes: 26
Could be a lot of things. Was it idling, running down the road etc etc. How long since coolant flush, is the coolant any good? What was the temp outside? Sitting in Direct sunlight or shade, breeze no breeze. I recently had my coolant system flushed and it got up to 245 before it finally started going back down. I was in doors it was miserably hot outside and there was no airflow.
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,218
Likes: 1,174
From: Southlake, TX
Check for debris in front of the radiator. Our C4s are vacuum cleaners and a lot of junk (leaves, grass, plastic bags...etc) get stuck between the condenser and the radiator.
Shine a flashlight in between the radiator shroud and see if you have an issue.
Shine a flashlight in between the radiator shroud and see if you have an issue.
Thread Starter
Intermediate
Joined: Sep 2016
Posts: 48
Likes: 1
From: Woodstock GA
washed with hose did not see much come out, but seemed to help.
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,218
Likes: 1,174
From: Southlake, TX
Burning Brakes
Joined: Jan 2012
Posts: 1,191
Likes: 153
From: Gilbert AZ
2018 C1 of Year Finalis4
Could be a lot of things. Was it idling, running down the road etc etc. How long since coolant flush, is the coolant any good? What was the temp outside? Sitting in Direct sunlight or shade, breeze no breeze. I recently had my coolant system flushed and it got up to 245 before it finally started going back down. I was in doors it was miserably hot outside and there was no airflow.
The LT1's and 4's are reverse flow engines and they run hotter than the standard Chevy Small Block. Check your users manual to see what your normal operating temperatures should be.
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Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Are the lower air dams in place and in good condition?? These pieces direct outside air upwards and into the A/C condensor and radiator.
Did you "burp" the cooling system when the engine was installed? An air pocket could be the culprit here. Are both the upper and lower radiator hoses hot to the touch with the engine at operating temp (180 to 205 degrees F) Is the coolant that was used a 50% mix of coolant and water?
Are the cooling fan(s) working properly?
Did you "burp" the cooling system when the engine was installed? An air pocket could be the culprit here. Are both the upper and lower radiator hoses hot to the touch with the engine at operating temp (180 to 205 degrees F) Is the coolant that was used a 50% mix of coolant and water?
Are the cooling fan(s) working properly?