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New LS block from Summit Racing

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Old Apr 18, 2025 | 11:29 AM
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Default New LS block from Summit Racing

For those serious builds...
https://www.enginelabs.com/news/heav...cing-ls-block/

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Old Apr 18, 2025 | 03:56 PM
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Ok so how much heavyer over a cast aluminum block?
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Old Apr 18, 2025 | 09:35 PM
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Originally Posted by captain vette
Ok so how much heavyer over a cast aluminum block?
Should be about 90 lbs. heavier.
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Old Apr 18, 2025 | 09:51 PM
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Wonder what it costs?
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Old Apr 18, 2025 | 10:04 PM
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My LSX Iron block is 135 lbs heavier.
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Old Apr 18, 2025 | 10:16 PM
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3350,- USD

https://www.summitracing.com/parts/s...2YCEJ_F-9ZRg45
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Old Apr 19, 2025 | 01:38 PM
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Interesting option, doesn't look like they cast in bosses for valley knock sensors.
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Old Apr 20, 2025 | 12:33 AM
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Iron...
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Old Apr 21, 2025 | 11:13 AM
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Originally Posted by 93Polo
Interesting option, doesn't look like they cast in bosses for valley knock sensors.
Just toss them in the trash. Any after market ls block is going to be based off of gen 4.
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Old Apr 21, 2025 | 03:33 PM
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Originally Posted by Navy Blue 210
My LSX Iron block is 135 lbs heavier.
Which is not a big deal for a straight-line car pushing 1200 HP
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Old Apr 21, 2025 | 03:36 PM
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A factory junkyard 05' L33 Aluminum engine will support ~900rwhp for 200,000 miles if setup properly

That engine and its sisters are a dime a dozen currently and one of the best forced induction V8 platforms available to date for one-off hobby installations

I wouldn't even consider aftermarket block unless 1400hp+
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Old Apr 21, 2025 | 04:21 PM
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Originally Posted by mykream
Just toss them in the trash. Any after market ls block is going to be based off of gen 4.
Exactly that's the problem and not that hard to cast in from the beginning.
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