Thread: Head gaskets
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08-05-2012 02:17 AM #1
Head gaskets
Hi, im just swapping my heads on a 350 sbc, By mistake I bought the felpro gaskets 1004 which is for a 400 sbc. Can I use them? I live in the UK so I would have to wait to get the new ones sent over here!
The 350 gasket is 4.166
The 400 gasket is 4.190 !!
Thanks in advance!
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08-05-2012 05:23 AM #2
As long as the ports and bolt holes match, which am pretty sure will. I see no reason for them not to work. Consider the extra thickness a plus, torque the bolts to 25 lb and recheck after first heat cycle.I have two brains, one is lost and the other is out looking for it
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08-05-2012 07:56 AM #3
Hi, im concerned regarding the bore size! the thickness is the same, does anyone know?
Torque the headbolts to 25lbs?Last edited by dave350v8; 08-05-2012 at 07:59 AM.
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08-05-2012 07:59 AM #4
According to the Speedway info you'll be fine using the 400 gasket - Fel-Pro Small Block Chevy 265-400 Head Gasket, Steel Ring, 4.166 Inch Bore - Speedway Motors, America's Oldest Speed ShopRoger
Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.
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08-05-2012 08:07 AM #5
I think that link refers to using a 1003 gasket on a 400 motor. I have the 1004 (400) gasket and want to fit it to a 350!
So I was wondering if the bigger bore on the gasket would give me issues?Last edited by dave350v8; 08-05-2012 at 08:12 AM.
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08-05-2012 08:20 AM #6
I always thought Chevy heads torque to 60 or 70 #.. You better look it up 25# seem like intake and I think they are around 35#.Charlie
Lovin' what I do and doing what I love
Some guys can fix broken NO ONE can fix STUPID
W8AMR
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Christian in training
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08-05-2012 10:09 AM #7
I thought heads were torqued to 65lbs as well,my main concern is the gasket bore size being 0.024 thou bigger than it should be!
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08-05-2012 12:00 PM #8
Maybe Pat or Jerry can provide some guidance on the gasket application.Last edited by rspears; 08-05-2012 at 12:23 PM.
Roger
Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.
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08-06-2012 06:13 AM #9
Can Pat or Jerry help me on this?
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08-06-2012 02:43 PM #10
You're fine - 1004 is actually specified for 350 - check out this link:
Fel-Pro Q1004 - Fel-Pro Performance Head Gaskets - Application - SummitRacing.com"Where the people fear the government you have tyranny. Where the government fears the people you have liberty." John Basil Barnhil
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08-06-2012 02:46 PM #11
Double post - opps.."Where the people fear the government you have tyranny. Where the government fears the people you have liberty." John Basil Barnhil
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08-06-2012 04:51 PM #12
You'll be fine with the slightly larger diameter gasket.PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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08-06-2012 08:22 PM #13
biggest dealie about the 400 gaskets is the steam holes(2 small holes between the cylinders) shouldn't use 350 gaskets on a 400---------
And DON"T use LT1 reverse cooling gaskets on a normal sbc of any size
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08-07-2012 11:44 AM #14
thanks everyone for the information!
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08-07-2012 04:33 PM #15
Very sorry for the miss info I somehow thought you were talking exhaust manifold, talk about an off day more coffee please.I have two brains, one is lost and the other is out looking for it
Thank you Roger. .
Another little bird