390 Intake gasket???
Cargo Master
Joined: Sep 2003
Posts: 2,110
Likes: 32
From: southwest pa
the head gaskets arent that big of a deal. just sucks that the heads are so darn heavy. while you have the thing apart id toss a cam in it and at the least put a nice 4bbl intake on it since the old one is heavy as all get out.
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Junior User
Joined: Feb 2008
Posts: 52
Likes: 0
Josh, I had the truck now for about a year and a half. It started after I put a new carb on it. I have been replacing what seemed like troubled areas. After the first Heat episode I put on a new water pump and a RobertShaw 330-180 thermostat. It doesn't have a coolant Reservoir but when i filled it to the rim it did come out the over flow. My dad use to work on the older engines but I am having trouble talking him into helping with this due to the cold. Wish me luck!
Lead Driver
Joined: Jun 2006
Posts: 5,710
Likes: 1,029
From: Near Yosemite CA
Also, once your done, (it should'nt take more than a case, unless your milking it) fill up the radiator, then start it up and leave the cap off, and watch, once it heats up and the t-stat opens you'll see the level drop, slowly start adding more.
Laughing Gas
Joined: Dec 2007
Posts: 1,052
Likes: 2
From: Alvarado, TX
If you pull the heads make sure they're nice and flat before reinstalling them. I would be a shame to go through all that work and blow a gasket in 6 months due to a warped head. If its got a lot of miles check the valves. Of course the increased cylinder pressure from a fresh valve job will probably cause a lot of blow by so you'll need to do the bottom end while you're at it. Where does it end????? OK, maybe just check the sufrace of the heads.
Postmaster
Joined: Aug 2000
Posts: 3,312
Likes: 1
From: Eldorado Ca. USA
Its true, fresh heads on a tired motor=a tired motor with fresh heads. With that said, have the shop check the heads for straightness, and see if they are cracked. It is possible to crack a head without the headgasket taking a dump. You can rent a cooling system tester from the parts house. Pull your spark plugs, pump it up to 40PSI or so, fix any leakes you see, and wait for water to start coming out of the holes....
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