MAX bore for a LQ4 block
Thread Starter
Joined: Dec 2009
Posts: 1,358
Likes: 0
From: Birmingham, AL
I've seen guys go to .065, making theirs a 6.2 liter. My engine supplier, who is one of the largest in the country (claims to be the largest) says these iron block 6 liters can go out to .090, with no problems. Personally, I would consult a sponsor of this site, before I made any decisions.
Predator-z hit it on the head.
Nobody can "tell" you how much you can overbore. They can only say typically. Take the block to a machine shop for sonic testing. They can tell you how thick the thinest part of the cylinders are. Then they can make a decision on how far is safe. Core shift can make cylinders thick on one side and thin in the other.
Nobody can "tell" you how much you can overbore. They can only say typically. Take the block to a machine shop for sonic testing. They can tell you how thick the thinest part of the cylinders are. Then they can make a decision on how far is safe. Core shift can make cylinders thick on one side and thin in the other.
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Thread Starter
Joined: Dec 2009
Posts: 1,358
Likes: 0
From: Birmingham, AL
haha, if this happens it wont see any bost, or at least thats not the plan. just a budget NA setup.
thanks for the info. this is just in the rough planning stages so i was just wanting to get an idea of what can and cant be done.
Predator-z hit it on the head.
Nobody can "tell" you how much you can overbore. They can only say typically. Take the block to a machine shop for sonic testing. They can tell you how thick the thinest part of the cylinders are. Then they can make a decision on how far is safe. Core shift can make cylinders thick on one side and thin in the other.
Nobody can "tell" you how much you can overbore. They can only say typically. Take the block to a machine shop for sonic testing. They can tell you how thick the thinest part of the cylinders are. Then they can make a decision on how far is safe. Core shift can make cylinders thick on one side and thin in the other.
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is the Gen III and Gen IV 6.0 blocks the same for bore capabilities? cause i want to put a Gen III block in to replace my LS1 eventually and was wondering if i could punch it out to 416 vs just a 408.
TECH Addict
Joined: Sep 2009
Posts: 2,481
Likes: 5
From: PA/MD
Look at it this way.....build your 408, run it for 100,000+ miles, then when it needs rebuilt you will have room in the block to rebore end get a 416
