The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**pjmoreland** · 09-16-2021, 10:46 AM

From what I've read, these heads have induction hardened exhaust seats. I see vehicles in wrecking yards regularly with 300,000+ miles on this type of head.

09-16-2021, 10:46 AM	#9
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,349	Re: Question about Valve Seat Machining From what I've read, these heads have induction hardened exhaust seats. I see vehicles in wrecking yards regularly with 300,000+ miles on this type of head.