LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Felpro gasket problems?

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Old May 10, 2008 | 08:29 PM
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camarostripes96's Avatar
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Default Felpro gasket problems?

I have a 96 trans am and just did a LT header job, well tried copper gaskets and they SUCK, then i went and got some felpro 1470 gaskets, and the passenger side gasket sealed up perfectly and the driver side gasket sealed up except the middle ports are leaking, i loosened the header back up and re torqued them and it is still leaking , what can i do, or should i get earls gasket? anyone know what to do?
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Old May 11, 2008 | 09:30 PM
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95 droptopz's Avatar
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I have percys dead soft aluminum and pacesetter long tubes and they seal great.
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Old May 11, 2008 | 10:30 PM
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yeah i have the same problem on my motor. and yeah copper blows...literally..but anyways what happened is from the leaking *** copper gaskets allowed so much hot air passed them that it warped the flange from the intense heat. what i spent most of the day today doing is taking them off and using a flat file to get the weld o rings on the flange totally flat. its about all you can do.also is a good idea to run the file on the head exhaust surface too.
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Old May 12, 2008 | 12:24 AM
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????? what do u mean, do u have a pic of it? im thinking about getting the percys or earls and try them since they are a little thicker
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Old May 12, 2008 | 12:27 AM
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hmmm..I have used felpro head gaskets on a few different high performance engines and never had any problems with them.
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Old May 12, 2008 | 12:30 AM
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i dont know , but i used the copper ones and EVERY PORT HOLE LEAKED BAD on both sides and i switched them out for felpro1470 and the passenger side sealed up perfectly and the driver side sealed up except the middle port on the bottom of the flange
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Old May 12, 2008 | 03:55 AM
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caldercay's Avatar
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Originally Posted by camarostripes96
I have a 96 trans am and just did a LT header job, well tried copper gaskets and they SUCK, then i went and got some felpro 1470 gaskets, and the passenger side gasket sealed up perfectly and the driver side gasket sealed up except the middle ports are leaking, i loosened the header back up and re torqued them and it is still leaking , what can i do, or should i get earls gasket? anyone know what to do?
I'll bet money the flange is not true (i.e. flat). Pull the header flange away from the
head and lay a straight-edge across the flange - you probably have a low spot on
the flange in the center.
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Old May 12, 2008 | 09:14 AM
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i never had any problems w/ fel pro. Make sure you tighten the bolts from middle out.
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I used to copper gaskets and they have been ok for over a year now.
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Old May 17, 2008 | 06:50 PM
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HEADER PROBLEM SOLVED !!!!!! Yall aint gonna beleive this **** but whenever i did my header install my buddy, who has an air bag truck and did all his suspension work, well i figured he knew what he was doin, well anyways he helped me install my headers and he did the driver side spark plug, well he cross threaded the 2nd spark plug and it barely went it like 1/4 of an inch so all the exhaust was blowing by the spark plug the whole freaking time!!! so i took it out and it wasnt striped out and i put it back in and exhaust leak FIXED !!! WWWOOO HOOOO sorry everyone for yall having to bare with me through this but thanks to everyone !!!
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