block and head casting ID help
Thread Starter
Teching In
Joined: Sep 2011
Posts: 35
Likes: 0
From: livonia mi
block and head casting ID help help with casting numbers and head id
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Hello, and thanks for all this great info I have found on this sight, there is alot of very informed people here and it has helped me alot,,, now I need somemore help,,,,,
I just bought a ls motor that looks like new, I know its a truck motor,,, but cant find any info on what it is,,, I only have about 500 bucks into it,,, but still want to know if I made the right choice buying it..
it's a 6.0 iron block, has a plug on it for a block warmer! rear of block casting numbers show 257518 on rear pass side of block.
heads have a 0821 number casted on pass side, below valve cover,,,
motor looks like new,, I have not pulled the covers or tore into it yet...
I think these heads are L98/LS-3 heads????
what the hell do I have, and is it a good one,,, it looks like brand new,,, oil on dipstick is clean like new!!!!
did I do ok on this???,, thinking bout putting it in my Nova after some mods.
--------------------------------------------------------------------------------
Hello, and thanks for all this great info I have found on this sight, there is alot of very informed people here and it has helped me alot,,, now I need somemore help,,,,,
I just bought a ls motor that looks like new, I know its a truck motor,,, but cant find any info on what it is,,, I only have about 500 bucks into it,,, but still want to know if I made the right choice buying it..
it's a 6.0 iron block, has a plug on it for a block warmer! rear of block casting numbers show 257518 on rear pass side of block.
heads have a 0821 number casted on pass side, below valve cover,,,
motor looks like new,, I have not pulled the covers or tore into it yet...
I think these heads are L98/LS-3 heads????
what the hell do I have, and is it a good one,,, it looks like brand new,,, oil on dipstick is clean like new!!!!
did I do ok on this???,, thinking bout putting it in my Nova after some mods.
TECH Resident
Joined: Oct 2008
Posts: 966
Likes: 0
From: Redondo Beach, CA
list of casting #'s:
933 97 aluminum perimeter bolt 5.7
806 97-98 aluminum perimeter bolt 5.7
853 99-00 aluminum center bolt 5.7
241 01-03 aluminum center bolt 5.7 (some late MY00 cars got 241 castings)
243 LS6 aluminum center bolt 5.7
862 and 706 99 and up 4.8-5.3 truck heads
873 99-00 LQ4 6.0 iron center bolt heads
317 01 and up LQ4 6.0 aluminum center bolt heads
035 02 and up LQ9 6.0 aluminum center bolt heads
933 97 aluminum perimeter bolt 5.7
806 97-98 aluminum perimeter bolt 5.7
853 99-00 aluminum center bolt 5.7
241 01-03 aluminum center bolt 5.7 (some late MY00 cars got 241 castings)
243 LS6 aluminum center bolt 5.7
862 and 706 99 and up 4.8-5.3 truck heads
873 99-00 LQ4 6.0 iron center bolt heads
317 01 and up LQ4 6.0 aluminum center bolt heads
035 02 and up LQ9 6.0 aluminum center bolt heads
