There are no symptoms that you described here that point to a head gasket. Burning antifreeze produces white smoke out the exhaust. If you mean it won't stay running at lower speed, I would guess that you might have a vacuum leak. This is quite possible after disturbing the distributor. You could have a cracked vacuum line.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!