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**Richard** · 08-21-2022, 05:54 AM

An early and late model valve are opposite in their function. One is normally closed and the other is normally open. My plan is to combine both with my LS swap to eliminate this problem.

08-21-2022, 05:54 AM	#8
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,990	Re: heater hose bypass An early and late model valve are opposite in their function. One is normally closed and the other is normally open. My plan is to combine both with my LS swap to eliminate this problem. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746