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Help me understand my 421.

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Old Apr 20, 2012 | 02:15 PM
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Child of gilead's Avatar
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Default Help me understand my 421.
I'm new obveously. I have a 06 trailblazer ss, and a 71 383 cheyanne (rip grandpa). But this is my first stroker vette. Well vette period. Help me with he motor. I don't have much info. But I no it has a 421. Built trans and rear. What hp range am I looking at. Again I apologize at the lack of knolage but any info would help
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Old Apr 20, 2012 | 03:09 PM
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Factory LS-3 averages 1.15 hp / per cubic inch

So if this engine is at least that efficent ; it around 484 hp.
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Old Jun 17, 2022 | 09:41 AM
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Wrong thread. Similar thread at the bottom bites again.
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Old Jun 17, 2022 | 09:43 AM
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Originally Posted by Vipula AD
Wrong thread. Similar thread at the bottom bites again.
Yeah it's a stupid "feature"
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Old Jun 17, 2022 | 07:46 PM
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Originally Posted by UwU
Yeah it's a stupid "feature"
Yeah, I don't understand why the Forum makes it the default. To turn it off do:
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Old Jun 17, 2022 | 10:24 PM
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Originally Posted by John Harry
Yeah, I don't understand why the Forum makes it the default. To turn it off do:
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Thread engagement. I've complained about it before lol
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