Head gasket replacement ???'s

Clean the block surface first by scrapping witha razor blade to get any existing head gasket material off, then wipe the surface with brake clean. I would first run a tap through all the head bolt holes to clean them out 7/16-18 is the thread.

Wipe the head off with brake clean before installing, I would also replace the head locating dowels $3 but you can reuse yours if needed. Moly on the top bolts, thread sealer on the lower bolts(these enter the coolant passages)

Nothing on the head gaskets.

And make sure you get the tourqe order. Your local Auto Zone can print it off for you. Or im sure you can find in on the net somewhere.

i dont think the top row goes into any coolant passages so you just want to use moly lube or even oil will help to get accurate tourqe readings. The lower row go into coolant passages so you have to use sealant on those and im sure the ARP stuff is fine. Make sure you use sealant on intake bolts also. They come out into the lifter valley and oil will sometimes seep through the treads.

Plan on 3 days to do the job if you haven't done it before.

Day one gets the heads off in 4-6 hours. Remove the A/C compressor mount bolts and move the compressor out of the way. The A/C compressor swings out of the way without disconnecting any of the lines or losing any refrigerant. Mark all the electrical, smog and vacuum lines with tags to help you remember where to re-connect them.

Day two gets all the gasket surfaces scraped off extra clean and the heads dropped off at the machine shop if you are going to have them reconditioned. Time here is another 4-6 hours. Whatever you do, don't skimp on cleaning the gasket surfaces. New gaskets need to seat against bare metal and not the residue left from the old gaskets in order to seal leak free. This is the most time consuming and tiresome part of the job. Look for little things that need to be replaced like the short hose from the thermostat hosing to the water pump, damaged vacuum lines and hose clamps that are rusted or broken.

Day three starts when you get the heads back from the machine shop. This is the time to pick up all the little odd pieces you found needing replacement on your day two inspection/cleanup. Plan on 6-8 hours to reinstall the heads and reconnect everything. Plan on an additional 2 hours to troubleshoot/adjust everything.

Now for some practical tips:

Plan on cutting the thermostat to water pump hose, or removing the thermostat housing. Also plan on removing the distributor to get clearance to remove the intake manifold. Remove #1 spark plug, stick your finger in the spark plug hole and crank. When your finger gets air moving past it, stop cranking. Turn the engine until the timing marks line up with the pointer. Now you can pull the distributor out.

You'll need new head bolts - get ARP bolts ($40) or studs ($93, maybe more). All the bolts get antiseize under the bolt heads, and everything but the short head bolts get it on the threads. You need Teflon pipe dope or ARP sealant to coat the threads of the short head bolts. The short bolts go into the water jacket and will seep coolant if you don't use the sealant.

My favorite trick that saves time and effort is the stay in place gasket. Be sure that you scrape (don't use a wire brush) all the old gasket material off, then clean all the surfaces with acetone or MEK.

When the surfaces are clean, use weather strip adhesive on the head to manifold surface, and on the side of the gasket that mates to the head. Follow the instructions on the tube or can and when it gets tacky, press the gasket down on the head.

Clean the area where the rubber rails mount to the block in front and in the rear with more acetone or MEK and do the same trick with the weather strip adhesive that you did to the heads.

Coat the rubber seals and the gasket area around the water passages with lots of Blue Silicone gasket sealer and put it together. Walla! No leaks and no gaskets that shifted out of place.

If you reuse the injectors from your old setup, a repair kit is available from most auto parts stores if needed. Coat the injector body "O" rings with oil before you use them and everything will slide back together.

For iron heads, clean the combustion chambers with a wire brush in an air or electric drill. I used a scraper for the pistons. I don't like to use the wire brush on pistons because it will remove metal very easily.

Change the oil once you get everything back together. Once the engine is up & running, run it for 1-2 hours and change the oil.

Tools: a good torque wrench is a must have item. A razor blade scraper that holds a single edge razor blade from Home Depot or Ace hardware is another handy thing. Get a Chilton or Haynes shop manual - you'll need it for the bolt torques and patterns. The intake manifold has an especially odd pattern. You'll need access to a timing light to set the timing after you re-stab the distributor.

Consumable parts:
Fuel injector seal kits with 2 O rings and a pintle cap (Borg-Warner P/N 274081) are available at Pep Boys auto parts. Cost is about $2.74 per kit. The pintle caps fit either injectors with a pin sticking out the injector end or 4 with more tiny holes in the injector end. The following are listed at the Borg-Warner site ( http://www.borg-warner.com ) as being resellers of Borg-Warner parts:

http://www.partsplus.com/ or http://www.autovalue.com/ or http://www.pepboys.com/ or http://www.federatedautoparts.com/

Most of the links above have store locators for find a store in your area.

Head gaskets
upper manifold gasket
lower manifold gasket set.
Exhaust manifold gasket set
Rocker cover gaskets - look for the rubber ones with the steel bushings - Summit has them
Short formed hose between thermostat hosing and intake manifold
6 ft 7/64" or 1/8" vacuum hose
2 ft 1/2" heater hose
1 1/2 ft 5/8" heater hose
Blue Silicone sealer
ARP antiseize or equal for the bolts
ARP thread sealer or Teflon pipe dope for the short bolts.
4 each 3/4" hose clamps (spare item in case the old ones are bad)
4 each 1/2" hose clamps (spare item)

I've had issues lately with the ARP stuff sealing on the lower bolts, like most engine builders I have switched to Permatex on the lower bolts.....as recommended by ARP..lol

Only the lowers enter a coolant passages.

need help drove 75 t0 100 miles on blown head gaskets

:SNSign: i was driving from pensacola florida to biloxi before reaching mobile i noticed oil pressure dropping to half of what it runs and then heating warmer than what it was running normally lil up above 130 degrees and i am asking for some help from the mustang buddys on stang net i need advice and tips and whatever i can get i am a pretty good mechanic and can fix alot but if i dont know ill ask first before doing it so help me out on a site i can go off of and or something else on the internet maybe or email me something if you got it down loaded
thanks again
jeff
and yea i have another thing i gotta a bolt that came ouuta the intake (lower) and it is laying there like someone took it out and dont know wtf to think of it!!!
its 306,nos,undrive,granelli motor sports,24lbs injec,255 lph holley,gt-40 intake,msd thru out the car,
this is what i have and just letting you guys know so you know what i got and the heads have a three angle valve job on them