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What size LS for a single GTX5518R

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Old 08-22-2020, 11:55 AM
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Default What size LS for a single GTX5518R
What size LS would you build for a single GTX5518R 88mm with a 1.15 AR ?
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Old 08-23-2020, 05:09 AM
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427ci is my guess.....
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Old 08-23-2020, 06:52 AM
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Originally Posted by LS-Underdog
What size LS would you build for a single GTX5518R 88mm with a 1.15 AR ?
388 !! i’ve run that turbo years ago. 427 is to big for that turbo in order to stay in its efficiency range
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Old 08-23-2020, 06:59 AM
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Run the 94mm with 1.24 housing on a 5.3L, if I had a 427 I’d run two.
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Old 08-23-2020, 07:09 AM
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Originally Posted by scottywheels
388 !! i’ve run that turbo years ago. 427 is to big for that turbo in order to stay in its efficiency range
Whats the difference in the GT55 and the GTX55....same exact chassis, right?

How would my 390ci do with either of those? Fast spool down low and won't run out of steam up top??
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Old 08-23-2020, 09:01 AM
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Originally Posted by stilealive
Whats the difference in the GT55 and the GTX55....same exact chassis, right?

How would my 390ci do with either of those? Fast spool down low and won't run out of steam up top??
You’ll blow the heads off before it runs outta steam
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