I have a 1970 LS-5 w/AC that has a rough finish thermostat housing on it. I also have a spare housing that is marked GM 3877660 on the neck? What is the correct application?
70 BB thermo housing
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Re: 70 BB thermo housing
joe-----
Any thermostat housing which has no part number embossed anywhere on it is NOT correct. The 3877660 is the correct housing. However, the configuration of it changed a bit over the years of its availability. The correct version will have small casting "wells" on either side of the base section.In Appreciation of John Hinckley- Top
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