LS1 vs LS6 question
11-29-2011, 08:13 PM
#1
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LS1 vs LS6 question hey fellas i have a question, how do i tell the difference between an LS6 block and and LS1 block?
so far i was told that an LS1 block has a "bulls eye" stamp on the block right behind the water pump, and that the LS6 block does not have that "bulls eye"
how true is that, i know that between the two block there is really no difference except the cooling channels but i was still wondering if that was true, ill try to pull up the thread that made those statements
thanks for any and all help
so far i was told that an LS1 block has a "bulls eye" stamp on the block right behind the water pump, and that the LS6 block does not have that "bulls eye"
how true is that, i know that between the two block there is really no difference except the cooling channels but i was still wondering if that was true, ill try to pull up the thread that made those statements
thanks for any and all help
11-30-2011, 12:24 PM
#2
hey fellas i have a question, how do i tell the difference between an LS6 block and and LS1 block?
so far i was told that an LS1 block has a "bulls eye" stamp on the block right behind the water pump, and that the LS6 block does not have that "bulls eye"
how true is that, i know that between the two block there is really no difference except the cooling channels but i was still wondering if that was true, ill try to pull up the thread that made those statements
thanks for any and all help
so far i was told that an LS1 block has a "bulls eye" stamp on the block right behind the water pump, and that the LS6 block does not have that "bulls eye"
how true is that, i know that between the two block there is really no difference except the cooling channels but i was still wondering if that was true, ill try to pull up the thread that made those statements
thanks for any and all help
11-30-2011, 02:07 PM
#3
TECH Fanatic
The only way to really tell for sure is to read the casting number on the block. The bullseye is not conclusive.
From JRP's FAQ Sticky in the newby section: (the pictures in this link no longer work)
https://ls1tech.com/forums/1740886-post8.html
The magic casting number, that means nothing is: 12561168
From JRP's FAQ Sticky in the newby section: (the pictures in this link no longer work)
15% of 01s and 25% of 02's got the LS6 Block. The only way to tell 100% is to check the casting number. As you can see in the above pic (my ls6 block ) the casting number is at the top of the deck on the drivers side. Take a mirror and place it behind the block and check or jack up the car and attempt to look from the bottom. The "easier" ways are the casting hue and bulleye methods but none are conclusive. If you really want to know if you have the block you'll need to do the work and look for yourself, end of story.
Once you have determined if you have an LS6 block (ya you), then the only benefit to the block are the bay windows.
Once you have determined if you have an LS6 block (ya you), then the only benefit to the block are the bay windows.
The magic casting number, that means nothing is: 12561168
