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GM LSX 377 or 454 Boosted help

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Old 12-30-2011, 10:06 AM
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Default GM LSX 377 or 454 Boosted help
Any one know what these motors will take for boost or power level????

any help would be nice on this.

thanks
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Old 12-30-2011, 10:52 AM
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https://ls1tech.com/forums/forced-in...egg-shell.html

376 is probably a better bet
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Old 12-30-2011, 11:03 AM
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why not a 427? why only those two chioces. What is the power adder going to be? Maggie, procharger, Turbo, twins or single?
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Old 12-30-2011, 11:40 AM
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GM only sells a 376 or 454 crate engine.

looking for quickest way to get a motor asap. honest answer. lol.
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Old 12-30-2011, 11:42 AM
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I don't think either one of them will take a lot of boost. Maybe lower levels but nothing like you are wanting.
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Old 12-30-2011, 12:45 PM
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376 scares me becuase of the powdermetal rods.

the 454 scares me becuase of the thin walls and the 11:1 compression.

GM needs to do a 6 bolt still 377 with forged intrenals. lol.
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Old 12-30-2011, 01:26 PM
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If you want something asap, why not give one of our vendors a call? They can hook up up with a longblock no problem.
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Old 12-30-2011, 02:19 PM
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Pretty sure their is a vette on here with a Novi or something making just shy of 900whp on a GM LSX376


Just sayin...
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Old 12-30-2011, 04:10 PM
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376 has stock rods, 58x reluctor, stock LS3 heads with stock beehive valve springs, doesn't work for most people or needs to be upgraded.

Our 390 or 410 engines are a better option.
https://ls1tech.com/forums/forced-in...rankshaft.html
Last edited by AES Racing; 12-30-2011 at 04:19 PM.
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Old 01-01-2012, 08:45 AM
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If GM would have put better internals in the 376 they would have a great seller.

Heard great things about the service and engines from AES!!!
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