Safe bore size 5.3
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From: Pensacola, FL
Safe bore size 5.3 I was wondering if anyone has found the safe bore limit for the gen 3 iron block 5.3?
I know the ls1 is 3.905/3.908 but I haven't seen the 5.3 specs. Was wondering if it was possible to bore it out to 4.000 plus safely wanting to run a LS3 internals
I know the ls1 is 3.905/3.908 but I haven't seen the 5.3 specs. Was wondering if it was possible to bore it out to 4.000 plus safely wanting to run a LS3 internals
You can not bore it to 4.00". I have seen a lot of people bore it out to LS1 specs and use LS1 pistons, but I have never done it personally. Thats as far as "its said" you can go with the 5.3L block.
Safe is the LS1 spec, as mentioned above, at 3.90x".
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COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
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POWERBOND - ASP - AND MORE!
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From: dayton ohio
i have punched mine to 3.905 and still have almost .200 left all the way around in the holes
putting together a 395/6 so i am testing waters people say cant be done and im checking everything twice
but yes a 3.905 is no problem
putting together a 395/6 so i am testing waters people say cant be done and im checking everything twice
but yes a 3.905 is no problem
I punch mine out to the exact 3.898 bore spec of the LS1 piston. I was at minimum wall thickness for cylinders 2 and 6, so be careful. Sonic test before boring blindly to piston size.
