Red 409 63 impala
Well Known Member
63 409 425hp. Engine completely rebuilt about 10 yrs ago. I finished installing in my car before the winter. Ran good just running for about a minute at a time. Cooling system not installed yet. Installed cooling system with antifreeze and this spring started it ran terrible.
Water getting into the oil. Pressurized cooloing system and holds 13-14 lbs pressure. Hear what sounds like a very slight hissing from drivers side head. Do all the head bolts need thread sealer? Have not removed the heads yet.
Water getting into the oil. Pressurized cooloing system and holds 13-14 lbs pressure. Hear what sounds like a very slight hissing from drivers side head. Do all the head bolts need thread sealer? Have not removed the heads yet.