What would cause #8 header pipe to turn cherry red? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Ironangel** · 06-22-2012, 08:12 PM

Howdy guys, my sons new race motor, 350ci with heads and cam(races 1/2 mile dirt)is turning the #8 header tube cherry red while the other 7 remain normal. We checked for blockage in the tube and its open. The plug is black with carbon so Im thinking its not because its too lean in that cylinder. Its a new engine with a new cam he was just breaking in when that cylinder pipe got noticeably bright red! Can an exhaust valve be hanging open or the seat burnt? Thanks in advance and I'll follow up with results, Thanks again! ~Michael Hill~

06-22-2012, 08:12 PM	#1
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	What would cause #8 header pipe to turn cherry red? Howdy guys, my sons new race motor, 350ci with heads and cam(races 1/2 mile dirt)is turning the #8 header tube cherry red while the other 7 remain normal. We checked for blockage in the tube and its open. The plug is black with carbon so Im thinking its not because its too lean in that cylinder. Its a new engine with a new cam he was just breaking in when that cylinder pipe got noticeably bright red! Can an exhaust valve be hanging open or the seat burnt? Thanks in advance and I'll follow up with results, Thanks again! ~Michael Hill~ __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"



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