Please help me identify these pistons
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Please help me identify these pistons
I'm trying to identify these pistons. I'm told these are factory GM 5.3s (3.78 diameter). I don't think factory 5.3 pistons have valve reliefs, right? I've searched for the numbers printed on these with no luck. These sit .010 above the deck (on what is supposed to be a new block). Is that typical for factory pistons? Thanks for the help!
#2
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All LS motors come out of the hole ~.01, its part of their design. It was something GM bragged about in literature as well
They look like hypereutectics, based on the cast in; rather than machined in valve reliefs.
I can do some more looking when I get home, but I feel that they are likely LS1 pistons. Can you get an OD measurement?
They look like hypereutectics, based on the cast in; rather than machined in valve reliefs.
I can do some more looking when I get home, but I feel that they are likely LS1 pistons. Can you get an OD measurement?
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All LS motors come out of the hole ~.01, its part of their design. It was something GM bragged about in literature as well
They look like hypereutectics, based on the cast in; rather than machined in valve reliefs.
I can do some more looking when I get home, but I feel that they are likely LS1 pistons. Can you get an OD measurement?
They look like hypereutectics, based on the cast in; rather than machined in valve reliefs.
I can do some more looking when I get home, but I feel that they are likely LS1 pistons. Can you get an OD measurement?
Agree on the hypereutectic comment.
I was planning on running .040 Cometic gaskets w/243 heads, but I think I need to stick with stock gaskets considering that they're .010 out of the hole.
Thanks for the input! If you manage to track down more info, I'd appreciate it but at this point, I guess it's not that important. I've got the info I need.