Are these odd shaped holes in my headers normal? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

OUbesto · 06-10-2018, 10:03 PM

I have a 1970 402 and was changing the valve covers gaskets when I saw these odd shaped holes in my header. Are these normal?

Bigdav160 · 06-11-2018, 07:10 AM

Those are heads not headers and they are the oil drain back holes. It's normal to have some casting flash in them.

OUbesto · 06-11-2018, 07:59 AM

Thanks Bigdav160 for the info on the "heads"!

PS - My dad was an auto mechanic his entire life and he is probably turning over in his grave when his son referred to heads as "headers"!

06-10-2018, 10:03 PM	#1
OUbesto Registered User Join Date: Oct 2015 Location: Lincolnshire, IL / Burlington, WI Posts: 209	Are these odd shaped holes in my headers normal? I have a 1970 402 and was changing the valve covers gaskets when I saw these odd shaped holes in my header. Are these normal? Attached Images __________________ 1970 C-10 CST, LWB, 402/400, A/C

06-11-2018, 07:10 AM	#2
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: Are these odd shaped holes in my headers normal? Those are heads not headers and they are the oil drain back holes. It's normal to have some casting flash in them. __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

06-11-2018, 07:59 AM	#3
OUbesto Registered User Join Date: Oct 2015 Location: Lincolnshire, IL / Burlington, WI Posts: 209	Re: Are these odd shaped holes in my headers normal? Thanks Bigdav160 for the info on the "heads"! PS - My dad was an auto mechanic his entire life and he is probably turning over in his grave when his son referred to heads as "headers"! __________________ 1970 C-10 CST, LWB, 402/400, A/C



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