GM Head Casting numbers
- Thread starter hrthomas
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WallaceChevy
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Do you think it could be 3911032?
If so, the specs are: 68......307/327......70cc chamber
If so, the specs are: 68......307/327......70cc chamber
makaveligh
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Do you have any idea what this LS1 Vett Numbers means?WallaceChevy said:
Heads 853
0087B4373856
Block 1Y5126162 180152
Casting 12559378
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Ryan;
Here's the short story on your heads, from their casting number;
"3911032 - 307/327 68-70 1.72/1.50 70cc"
The "70 cc" refers to the combustion chamber size (volume between the top of the piston and inside of the head when the piston is full up (Top Dead Center, TDC) and the inside, top of the combustion chamber (inside of the head where the valves are).
:shock:
> makaveligh ;
Regards your 'vette engine, by the casting number, 12559378, here's the short story;
"12559378 1997-up 350 Crossbolted LS-1 Aluminum"
:shock:
Definitely an all aluminum 'vette engine!
It's a real keeper and will put out a lot of HP!
Hope this helps!
Here's the short story on your heads, from their casting number;
"3911032 - 307/327 68-70 1.72/1.50 70cc"
The "70 cc" refers to the combustion chamber size (volume between the top of the piston and inside of the head when the piston is full up (Top Dead Center, TDC) and the inside, top of the combustion chamber (inside of the head where the valves are).
:shock:
> makaveligh ;
Regards your 'vette engine, by the casting number, 12559378, here's the short story;
"12559378 1997-up 350 Crossbolted LS-1 Aluminum"
:shock:
Definitely an all aluminum 'vette engine!
It's a real keeper and will put out a lot of HP!
Hope this helps!
