BBMonte396 Posted November 13, 2009 Report Share Posted November 13, 2009 Well i have to pull the heads off my 3400 and redo the gaskets so i guess my Q is what gaskets shud i use? i am going to have the heads milled just to clean them up or can i go more and shim the rocker's? I did a leek test @ 15 psi and was down to 10 in 2 minutes and i am getting air in the system after driving it and letting it cool down. there is no water in to the oil and none leaking out side. Intake Manifold Gasket: pn# MS98003T Head Gasket: pn# 9071PT Quote Link to comment Share on other sites More sharing options...
BXX Posted November 13, 2009 Report Share Posted November 13, 2009 pull.... Now that the spelling lesson is done, Get Felpro gaskets or GM. You will also need new headbolts as the original ones are torque-to-yield and MUST NOT be reused. Only have the heads milled .010" is they need it. Don't shim the rockers, this engine isn't from the 50's Oh, and have the heads checked out. Out of 10 3x00s needing headgaskets, at least one of those were due to head fractures. Quote Link to comment Share on other sites More sharing options...
BXX Posted November 13, 2009 Report Share Posted November 13, 2009 Oh, and are you sure it just isnt the LIM leaking?? When you did the leak test you should have also been looking for where the coolant was going on why it was bleeding down. Quote Link to comment Share on other sites More sharing options...
MonteCarloDude Posted November 13, 2009 Report Share Posted November 13, 2009 Oh, and are you sure it just isnt the LIM leaking?? Ahh you beat me to it. I would definitely check and make sure it is not the LIM. Quote Link to comment Share on other sites More sharing options...
BXX Posted November 13, 2009 Report Share Posted November 13, 2009 At least Im faster with something Quote Link to comment Share on other sites More sharing options...
MonteCarloDude Posted November 13, 2009 Report Share Posted November 13, 2009 At least Im faster with something Quote Link to comment Share on other sites More sharing options...
BBMonte396 Posted November 13, 2009 Author Report Share Posted November 13, 2009 yeah i put paper down under the car no out side leeks. what the hell is a LIM??? Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted November 13, 2009 Report Share Posted November 13, 2009 Lower Intake Manifold... if you have to replace that gasket, do it once and use the Fel-Pro full metal ones, i believe they are the Perma-Dry ones. WOT-Tech sells them, but you should be able to find them at your local auto-chain stores as well. Quote Link to comment Share on other sites More sharing options...
BXX Posted November 13, 2009 Report Share Posted November 13, 2009 yeah i put paper down under the car no out side leeks. LIM??? Hard to tell, theres lots of places to let the coolant puddle on from the LIM before it hits the ground. Not to mention the grime that soaks up the coolant a bit too.. Lower Intake Manifold, they tend to leak As in 100% failure rate over the life of the vehicle Quote Link to comment Share on other sites More sharing options...
BBMonte396 Posted November 13, 2009 Author Report Share Posted November 13, 2009 LIM ill look over the lower intake as there is no coolant in the oil or out side the engine. but i may have missed some thing. it looks like air is getting in to he system ill fill the rad up when it is cold and the next day after driving to work and bak ill look and it will be missing some coolant. but the rez with be fine. P.S i had the LIM done when i got the car Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted November 13, 2009 Report Share Posted November 13, 2009 When my LIM went back, it leaked out on the drivers side of the motor onto the valley by the distributor o-ring and the tranny, and it got mostly soaked up by dirt and gunk... Made it hard to find the leak... Quote Link to comment Share on other sites More sharing options...
BBMonte396 Posted November 15, 2009 Author Report Share Posted November 15, 2009 OK if it is the LIM? would that cause air to get in to the system? What i did is over fill the reservoir to get all the air out of the lines going to the filler neck and let that fill the rad then slaped the cap. i would think it would let water out but where would the air come from? i would think any coolit that was lost would have been replaced with the water in the reservoir. Quote Link to comment Share on other sites More sharing options...
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