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Can anyone help identify what heads I have? I found this set nicely wrapped in my parts stash but cannot for the life of me remember when or why I bought them!
They are cathedral heads and have these markings:
Any help is appreciated.
There are no other manufacturers logos anywhere on the ends of the heads.
Thanks!
You showed us 2 casting date codes and one stamping from a machine shop.
Can't tell for sure if they're both aluminum or what.
What are the casting numbers? That's the most important thing.
The date codes though, since the 2nd one is from a year ending in 6 month H (the 8th, Aug), is almost certainly an early LS1 head, as in, off a 97 Vette. The 1st, cast in month K (the 11th, Nov) of a year ending in 3, is probably a later model LS1 casting; although, it could be a 4.8/5.3, LQ4, LQ9, etc.
Not sure they're a "set". Might just be 2 heads.
Is one (the 1st) center-bolt and the other perimeter-VC-bolt?
You showed us 2 casting date codes and one stamping from a machine shop.
Can't tell for sure if they're both aluminum or what.
What are the casting numbers? That's the most important thing.
The date codes though, since the 2nd one is from a year ending in 6 month H (the 8th, Aug), is almost certainly an early LS1 head, as in, off a 97 Vette. The 1st, cast in month K (the 11th, Nov) of a year ending in 3, is probably a later model LS1 casting; although, it could be a 4.8/5.3, LQ4, LQ9, etc.
Not sure they're a "set". Might just be 2 heads.
Is one (the 1st) center-bolt and the other perimeter-VC-bolt?
Both those numbers in the photos are from the same head. I want to sell them but would like to have a bit of knowledge of what they may be so I can advertise them correctly. They have their covers too.
There just early LS1 heads like an 806 Likely from a 97 corvette based on the date code. Looks like they may have been milled .030 based on the stamps. The other numbers are likely a Job number from what ever shop as well as maybe a Part number for the porting package.
The GM number should be 10215339 according to the Ebay Ad
New one here for me personally. I’ve never seen a 339 casting head. I’d wager that the general didn’t make a zillion of these.
Looks like they are specific to the first 2 years of production. Most people don't keep that stuff when upgrading. Maybe some of the purest corvette guys keep it....
New one here for me personally. I’ve never seen a 339 casting head. I’d wager that the general didn’t make a zillion of these.
Me too, not that I have nearly the cred most guys here have. It's rare enough that I could not find it in the Summit LS database.
What are the specs on it? Chamber volume, valve diameters, port volumes, valve pocket size...... all the nittygritty.
very early heads from when gm was changing a lot of things on the ls1. should be same as 806 head, just different foundry. lists as a 1997 only casting 10215339 – LS Small Block V8 1997 346, LS1, aluminum, 68cc chambers
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LS Head Identification 
