GM LSX 377 or 454 Boosted help

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Dec 30, 2011 | 10:06 AM

Toxic-Evo

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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

Dec 30, 2011 | 10:52 AM

killernoodle

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https://ls1tech.com/forums/forced-in...egg-shell.html

376 is probably a better bet

Dec 30, 2011 | 11:03 AM

fatmat80

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From: oakland, ca

why not a 427? why only those two chioces. What is the power adder going to be? Maggie, procharger, Turbo, twins or single?

Dec 30, 2011 | 11:40 AM

Toxic-Evo

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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.

Dec 30, 2011 | 11:42 AM

scooter k

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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.

Dec 30, 2011 | 12:45 PM

Toxic-Evo

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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.

Dec 30, 2011 | 01:26 PM

killernoodle

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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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Dec 30, 2011 | 02:19 PM

JAX04

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From: Indy

Pretty sure their is a vette on here with a Novi or something making just shy of 900whp on a GM LSX376

Just sayin...

Dec 30, 2011 | 04:10 PM

AES Racing

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From: Elk Grove Village IL

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; Dec 30, 2011 at 04:19 PM.