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Re: 5.3 Chevy Truck Throttle body coolant passage ?
Posted to Technical Discussion Forum on 8/17/2014 3 Replies

Joseph,

I know all about the Castec heads. We had few of them in the shop checking for cracks when they were first out. He was going to change the oil today. I might call him and tell him to watch for water but he said the oil looked ok. The truck is in beau... Login to read more.

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