The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 454 Valve Steam Seals: Umbrella or Positive?

Wrecked1982 · 02-04-2012, 10:33 AM

yes you can replace them on the block you need a air hose adapter that will screw into the sparkplug hole and turn the damper so the valves your working on will be closed

02-04-2012, 10:33 AM	#8
Wrecked1982 Registered User Join Date: Feb 2011 Location: Cold Canada Posts: 310	Re: 454 Valve Steam Seals: Umbrella or Positive? yes you can replace them on the block you need a air hose adapter that will screw into the sparkplug hole and turn the damper so the valves your working on will be closed