No, you need to add a Summer/Winter cut-off valve in one of the lines under the hood. The heaters were all dealer installed accessories so there really is no right or wrong way to do it. That said Chevrolet did have a valve-nipple that would thread into the block that the hose connected to that made it an easy job.

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
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Silver Spring, MD