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Cyrus's LS1 Dyno Test


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Man - I can't believe Cyrus hasn't posted his dyno results.

He ran his car on a 94° day in San Jose, CA - June 26th. His best of five runs was 332 RWHP and 343.8 lb-ft of torque. He had 90%+ torque from 2,500 to 6,000 RPM and 90%+ HP from 4,500 to 6,000 RPM. WOW!!!

All this from a basically stock motor!

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Phantom,

 

What mods did Cyrus had on the motor at the time, was it completely stock?. I'm doing the same swap as you guys and would like mine to have similar performance while remaining basicly stock (daily driver).

 

Thanks and great job on your car :D .

 

HG

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As far as I know it is a 2001 LS1 'Predator'. It has a K&N style intake filter- I think - stock cast iron headers and then flows out through dual 2.5" exhausts to 2.25" Corvette C-4 mufflers. Not aware of any other internal or external mods. Probably need to contact Cyrus to get the full scoop.

I ran mine on the dyno today. Mine does have the K&N intake and a set of custom headers but combines in a Y to flow out through a single 2.5" tailpipe. Mine dyno'd at 311.2 HP and 326.5 lb-ft of torque. Mine is out of a '98 or 99 Camaro and is otherwise not modified.

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Thanks for the reply phantom, I have a 98 ls1 t56 combo waiting for the framework to be finished to go in. I plan on doing all the free mods to it (ported tb and maf, rerouting coolant lines from tb etc) and hope to get similar results to it. I want also to thank you for your updates, they are a nice guide to follow :D

 

Thanks again,

HG

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