How much can a ls1 be bored

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Jun 11, 2008 | 08:33 PM

coondog

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From: south carolina

How much can a ls1 be bored

what is the max a ls1 can be bored to? Any experices or pre cautions? Thanks for any help.

Jun 11, 2008 | 08:53 PM

Halloran

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From: Carson City, NV

No more than .007". That's of course if you're referring to a stock 5.7L aluminum block LS1 and not a 6.0L LS1/LQ9 LS1.

Precaution: DON'T FORGET THE TORQUE PLATE

Jun 11, 2008 | 10:32 PM

coondog

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From: south carolina

Thanks. Its a 5.7.

Jun 12, 2008 | 01:50 AM

Sunset'01Z

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From: Fort Worth, Tx

these aluminum sleeved blocks cant be bored like iron blocks can.

Jun 12, 2008 | 12:08 PM

ROCNDAV

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Early ls1 blocks (<2000) can only be honed .004, later ls1 blocks can be bored .010" (as per the factory)

I went .007 on my 97 Vette block (3.905) as I spoke with several other members on here that have done the same without any problems. THe only thing that everyone agreed was to not use a power adder (N20, turbo, supercharger) on an early block that had been honed that much.

Jun 12, 2008 | 09:40 PM

johnLs1camaro

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i thought if you had a 98 block that you couldnt even bore it??? i maybe wrong??

Jun 12, 2008 | 11:40 PM

ROCNDAV

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Quote:

Originally Posted by johnLs1camaro

i thought if you had a 98 block that you couldnt even bore it??? i maybe wrong??

THey can be honed a few thousandths, not bored.

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Jun 13, 2008 | 08:14 AM

98RedBird

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From: Peoria, IL

Quote:

Originally Posted by ROCNDAV

THey can be honed a few thousandths, not bored.

They can be bored. You can take up to .007" out without problems. Honing only takes out, as you stated, a thousandth or two and is just used for cleaning,truing up the cylinder walls and giving a cross hatch for the new rings to seal to. If you go with any aftermarket piston (Or at least 98% of them made for the LS1) you have to bore the cylinder to 3.905" and honing would not realistically be a very good method for removing this much material.