LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Overheating

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Old Jul 7, 2014 | 12:07 PM
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Default Overheating

My 94 LT1 in a 75 Vette has been running hot. I think the temp sensor was bad, causing the head to warp. As a backup, I'm thinking of also putting in a temp switch in the passenger head, which would activate the fans if the computer doesnt. As these are both grounds for the relays to turn on the fans, I was thinking of splicing them together. Any thoughts?
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Old Jul 7, 2014 | 12:35 PM
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So you have a warped head, and are chasing an overheating issue?
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Old Jul 7, 2014 | 01:10 PM
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Correct, after the head gasket failed, I removed the heads and had them checked, the mechanic said that one side had warped about 12 thousands and had them resurfaced. They only had 1000 miles on them.
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Old Jul 7, 2014 | 01:21 PM
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Ah ok, thought it was currently warped.

if you splice the signal ground leads together you will always have both fans on. No matter what, so, you take a step backwards as far as OEM setup goes.

If you can find a way to have the two signal leads triggered both off the aftermarket sensor but not backfeed when the PCM triggers the one on, that would be best IMO.
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