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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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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.
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Hi, im concerned regarding the bore size! the thickness is the same, does anyone know?
Torque the headbolts to 25lbs?
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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?
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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#.
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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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Maybe Pat or Jerry can provide some guidance on the gasket application.
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Can Pat or Jerry help me on this?
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You'll be fine with the slightly larger diameter gasket.
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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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thanks everyone for the information!
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Very sorry for the miss info I somehow thought you were talking exhaust manifold, talk about an off day more coffee please.