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max overbore on 6.0L

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Old 08-17-2004, 07:01 PM   #1
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Default max overbore on 6.0L

what is the max you can overbore cylinders on the 6.0 L block???

found me a cheap shortblock with a couple bad cylinders and pistons....

another project and I aint even done with the current one

thanks in advance

RAT
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Old 08-17-2004, 07:54 PM   #2
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Some blocks can go .060" over but, the cylinder walls need to be checked to make sure.
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Old 08-17-2004, 08:33 PM   #3
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Quote:
Originally Posted by Ram Air Tony
what is the max you can overbore cylinders on the 6.0 L block???

found me a cheap shortblock with a couple bad cylinders and pistons....

another project and I aint even done with the current one

thanks in advance

RAT
02 Burb
01 Formy
01 Z oh
yea I looked at the same block until I found out it would cost 300 to ship.
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Old 08-17-2004, 11:40 PM   #4
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.030 easily, .060 sonic'd, .090 if you're REALLY brave, and there was a couple of guys on another board that have supposedly gone .125 (supposedly the walls on the early '99-'00 blocks are thick enough to do it) but it's awfully hard to believe because the walls would be paper thin between cylinders......but at .125 over with a 4.125" stroke crank you'd get 454cid !!!
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Old 08-18-2004, 04:35 PM   #5
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Jeez, .125 is a whole lot for a 6.0L block. I've heard of .080" on a 6.0L but, never more than that. You're right those guys are brave.

.125" over with a 4.125" stroke is only a 441" though.
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Old 08-18-2004, 11:31 PM   #6
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oooops....I was doing the math for a 4.250 stroke......sorry

but a 441 would be pretty cool too
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Old 08-21-2004, 08:38 AM   #7
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thanks for the info, didnt get the block....somebody pay over $200 for it

thanks again for the info

RAT
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Old 08-21-2004, 09:49 AM   #8
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So, can the 5.3 be bored to the same displacement as the 6? The strokes are already the same, right? So just a big bore and some new pistons could make a 6L easy?
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Old 08-21-2004, 11:05 AM   #9
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4.8/5.3L can go out to ~3.9".
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