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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 04-04-2011, 09:38 PM   #1
jthorn9
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Default Head Gasket Question

Ok simple question, since I'm completely rebuilding my car, after 2 head gasket blow outs, once S/C caused, one not, I want to make 100% damn sure I get the right gaskets.

This time I'm using ARP stud mount bolts to mount the heads in place.

I need to know what kind of head gasket to use. Last time I used the standard $60 felpro high performance head gaskets, they are on the car now and holding up to my knowledge but the car hasn't been driving 10 miles.

I have SVO GT40 X303 heads and I just want to make damn sure I'm using the correct gaskets for aluminum heads.
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Old 04-04-2011, 09:52 PM   #2
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ARP head studs? Did you use the 1011-2 gasket? There OK gaskets I use them a lot my buddies 347 tfs headed 10lb boosted engine is holding up nicely with that very same gasket! Are there better gaskets sure what do you wanna spend?before you just reclamp those heads make a trip to the machine shop and have them pressure checked! And make sure the surface isn't warped! Just insurance!
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Old 04-04-2011, 10:41 PM   #3
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I just had them remilled but the guy showed me how to check them for warpage but I'll probably still bring them to him, he was really affordable.

Yes, I'm getting ARP stud bolts for the heads. A lot of people have recommended using them over standard bolts. Currently I have ARP head bolts but been told that the stud bolts get a much better seal and help prevent the aluminum heads from warping off the block.

Any truth to this?
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13 Mustang GT CS - 380 RWHP 370 TQ
13 Mustang V6 PP - 270 RWHP 260 TQ

95 Mustang SVO - 400 RWHP 400 TQ sold
08 Mustang GT - 285 RWHP 305 TQ sold
99 Mustang Cobra - 280 RWHP 290 TQ sold
11 Mustang V6 - 270 RWHP 260 TQ sold
97 Mustang GT - 190 RWHP 250 TQ sold
00 Mustang V6 - 145 RWHP 184 TQ sold
98 Mustang V6 - 125 RWHP 210 TQ sold

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Old 04-04-2011, 11:13 PM   #4
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Quote:
Originally Posted by jthorn9 View Post
I just had them remilled but the guy showed me how to check them for warpage but I'll probably still bring them to him, he was really affordable.

Yes, I'm getting AFR stud bolts for the heads. A lot of people have recommended using them over standard bolts. Currently I have AFR head bolts but been told that the stud bolts get a much better seal and help prevent the aluminum heads from warping off the block.

Any truth to this?
yes, the machining process of putting a bolt on a stud makes it a little bit weaker vs a separate stud and bolt (worked in an aerospace machine shop before the economy took a $hitter). anything that needs to be stronger is always a stud/bolt setup.

dont ask me why, something about metallurgy and molecular alignment (i really have no clue...)

i used and am going to use the 1011-2 gaskets and loved them too
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Old 04-04-2011, 11:47 PM   #5
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you may laugh, but use a 9333pt1, it's graphite and works well with the different expansion rates of the metals, allows some shift without blowing, got friends who run them on turbo and nitrous cars as well as s/c cars, run heads studs
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Old 04-04-2011, 11:58 PM   #6
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Thanks guys, I think before I had the 1011-1 gaskets cause all the gaskets I've had have had steel rings, I knew there was a difference for aluminum heads. Thanks again.
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95 Mustang SVO - 400 RWHP 400 TQ sold
08 Mustang GT - 285 RWHP 305 TQ sold
99 Mustang Cobra - 280 RWHP 290 TQ sold
11 Mustang V6 - 270 RWHP 260 TQ sold
97 Mustang GT - 190 RWHP 250 TQ sold
00 Mustang V6 - 145 RWHP 184 TQ sold
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Old 04-05-2011, 12:22 AM   #7
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I believe those are for oringed heads. Mjr I too know people using those and have good luck!
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Old 04-05-2011, 12:22 AM
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