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

**kwmech** · 09-04-2023, 12:17 PM

I always adjust them with the engine warmed up and running. Back off till clacking then slowly tighten until the noise goes away then another 1/2 turn. It can be messy but it works for me

09-04-2023, 12:17 PM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,391	Re: Adjusting valve clearance on a 454 V8. I always adjust them with the engine warmed up and running. Back off till clacking then slowly tighten until the noise goes away then another 1/2 turn. It can be messy but it works for me