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LS1 Max Sleeved bore/stroke

 
Old 06-16-2019, 08:13 AM
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Default LS1 Max Sleeved bore/stroke

What's the max you bore/stroke you can sleeve an LS1?
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Old 06-16-2019, 08:30 AM
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Originally Posted by 98ws6blk View Post
What's the max you bore/stroke you can sleeve an LS1?
I don’t think its been done on a standard deck block, but I think theres room for a 4.30” stroke. That would get you about 478ci with a 4.20” bore.
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Old 06-16-2019, 01:24 PM
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Wow. Didn't realize you could go that big on stroke.
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Old 06-16-2019, 01:37 PM
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For the cost to do an LS1 block you could buy a nice aftermarket block that's better suited for these kinds of builds though.
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Old 06-16-2019, 08:39 PM
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Originally Posted by 01CamaroSSTx View Post
For the cost to do an LS1 block you could buy a nice aftermarket block that's better suited for these kinds of builds though.
I know. It's just appealing to have the original engine in it even though it's heavily modified.
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Old 06-16-2019, 08:58 PM
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I still have my original block but unfortunately the No. 6 rod gave way and did a real nice clearance job on the 6 and 5 sleeves.
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Old 06-17-2019, 07:36 AM
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Originally Posted by 98ws6blk View Post
I know. It's just appealing to have the original engine in it even though it's heavily modified.
Thats not appealing at all.
But selling the "orignal engine" and putting that cost on a aftermarket block is!
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Old 06-17-2019, 12:06 PM
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Originally Posted by Ls7colorado View Post
Thats not appealing at all.
But selling the "orignal engine" and putting that cost on a aftermarket block is!
Depends on the end goal. Showing people a stock engine with no boost then putting up huge numbers can be fun. It's also fun when you're limited to a stock block in a racing class. Not everyone wants flashy branded parts.
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Old 06-17-2019, 01:13 PM
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Originally Posted by bammax View Post
Depends on the end goal. Showing people a stock engine with no boost then putting up huge numbers can be fun. It's also fun when you're limited to a stock block in a racing class. Not everyone wants flashy branded parts.

sounds pretty lame lol numbers are numbers, who cares what parts are left that came from the factory??
MAYBE if it was a super rare car that came with a special engine....

either way, carry on with your build!
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Old 06-17-2019, 02:04 PM
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Its not a stock block if you went and bored it and put sleeves in it....
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Old 06-17-2019, 02:14 PM
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exactly
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Old 06-17-2019, 02:57 PM
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Originally Posted by ddnspider View Post
Its not a stock block if you went and bored it and put sleeves in it....
was just gonna say that!
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Old 06-17-2019, 05:57 PM
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It would be numbers matching for a low mileage anniversary car.

If the car has over 75K on it, it will never be a high dollar car. Just mod it and enjoy it.
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Old 06-17-2019, 05:59 PM
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Originally Posted by KCS View Post
I don’t think its been done on a standard deck block, but I think theres room for a 4.30” stroke. That would get you about 478ci with a 4.20” bore.
Wouldn't the sleeves have to be about .30 bigger diameter than stock, how would they even fit in an LS1 block?
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Old 06-17-2019, 07:51 PM
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Originally Posted by patSS/00 View Post
Wouldn't the sleeves have to be about .30 bigger diameter than stock, how would they even fit in an LS1 block?
4.200” has been done which leaves about .200” between the bores. Probably need to use an MID kit rather than a dry sleeve.
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Old 06-18-2019, 09:25 PM
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Originally Posted by ddnspider View Post
Its not a stock block if you went and bored it and put sleeves in it....
It's still the stock block, just not stock internally. You guys are too hung up on junkyard 5.3's I guess.
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Old 06-19-2019, 06:06 AM
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Originally Posted by bammax View Post
It's still the stock block, just not stock internally. You guys are too hung up on junkyard 5.3's I guess.
Please look up the definition of "stock". Its not a "stock block" at all. Next we'll get to hear how you can be on the bolt on list because you bolted on a blower and cam.
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Old 06-19-2019, 04:59 PM
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You can build a 427 or even a 454 utilizing an LS1 block and I'm pretty sure it was done long before the LS3's and 7's came along. It's just not recommended to go over 4.00 in stroke and even that is pushing it from what I've read but people push the envelope all the time so to each his own and by all means carry on..

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