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Old 04-27-2012, 02:45 AM
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Felpro head gaskets

Hi
Just collecting my parts for the next rebuild,By mistake I have purchased felpro 1004 head gaskets for my 350 small block,will these give me issues as I really should have gone for the 1003 gaskets!
I believe the difference is the bore size?
Thanks in advance

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Old 04-27-2012, 04:31 AM
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Helps to know your head chamber volume and how far down the bore the pistons are.
Plan your gasket choice from there, bore and thickness.

Summit Racing Part Number FEL-1004
UPC 084113010040
Bore (in) 4.190 in.
Bore (mm) 106.426mm
Gasket Material Steel core laminate
Compressed Thickness (in) 0.041 in.
Compressed Volume (cc) 9.200cc

Summit Racing Part Number FEL-1003
UPC 084113010033
Bore (in) 4.166 in.
Bore (mm) 105.816mm
Gasket Material Steel core laminate
Compressed Thickness (in) 0.041 in.
Compressed Volume (cc) 9.100cc

BTW, Summit compression caculator.

Last edited by malc; 04-27-2012 at 04:38 AM.
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Old 04-27-2012, 10:31 AM
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Hi,
The heads have 64cc chambers,flat top +60 pistons,just worried that the bore size in the head gasket would be too big as they are designed for 400 blocks not 350 blocks?
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Old 04-28-2012, 08:26 AM
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I used head gaskets too big for my bore and nothing untoward happened.
You´re just giving up a little compression.
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Old 04-28-2012, 12:14 PM
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Thanks for that,just a bit concerned!
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Old 04-29-2012, 05:04 AM
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Quote:
Originally Posted by dave350v8
Hi
Just collecting my parts for the next rebuild,By mistake I have purchased felpro 1004 head gaskets for my 350 small block,will these give me issues as I really should have gone for the 1003 gaskets!
I believe the difference is the bore size?
Thanks in advance
If your block was plate honed with the 1003 it will change the top of the bore as far as distrotion if you use the 1004 which will work on a 350 block
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