0821 head castings?
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0821 head castings?
I found some 0821 casting heads for fairly cheap. Are these the same as L92 heads? Are they the heads that came off a LS3? Im looking to put them on my 408ci. Thanks
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Cool so these should be exactly what im looking for. Thanks. It looks like they came with yellow valve springs like the ones that came off the c5 z06. I wonder if they are the same ones
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They are what you are looking for, they are L92 heads. Casting number doesn't necessarily indicate what valves are in a new head though. I currently have L92 castings on sale CHEAP for $630 for a set of complete heads.
Jesse
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Last edited by Scoggin Dickey; 04-10-2009 at 05:46 PM.
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if the ones im looking at fall through then im giving you a call. thats cheap! what is the most that can be milled off these heads. my 408 has -28cc pistons in it. i had a blower installed but sold it. im just trying to get as much compression and power out of it without changing the pistons. Thanks
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yeah i know it is going to need to be quite a bit of milling. i just dont want to mill so much to where i compromise the head strengh. im guessing somewhere around .045 .050 with .042in head gaskets? i know it wont get me stock comp but hopefully somewhere around 9.5-10.0 i would hope.
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Ok, actually casting number can tell you which head it was originally on a stock head. 821s were LS3, the difference between the casting numbers is the valve seat between LS3 and L92. You're not going to have a performance or flow difference based on the casting number, it really is not relevant
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https://ls1tech.com/forums/generatio...omparison.html
Which valve is in the heads your looking at?
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You've got LS3 heads.
-Jesse
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Last edited by Scoggin Dickey; 04-13-2009 at 08:32 AM.
#14
That's me, Jesse. Thanks for clarifying which heads I received. These heads obviously have the valve on the right in SweetSV10V8's link.
I got the long end of the stick for a change.
I got the long end of the stick for a change.
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