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Camaro V6 LFX Engine, Exhaust, and Bolt-Ons For all LFX related parts

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Old 08-20-2013, 03:43 PM   #1
SmokiNstripes6913
 
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Compression Ratio on FI LFX

Just curious, what CR are the FI guys running? I would have to think the stock 11.5:1 would be too high.
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Old 08-20-2013, 04:08 PM   #2
GretchenGotGrowl


 
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11.5 is probably fine to around 8psi or so. Above that you may have some issues. I'm running 10:1.
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EFR Twin Turbo LFX-GPI Tune-ZL1 fuel pump-10:1 CR forged pistons-3.45 gear-Meth Injection-BMR Trailing Arms, Bushings & Sway Bars-CircleD 4000 Stall-GPI Fuel Enrichment System
647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
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Old 08-20-2013, 05:29 PM   #3
Sikoriko

 
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Quote:
Originally Posted by GretchenGotGrowl View Post
11.5 is probably fine to around 8psi or so. Above that you may have some issues. I'm running 10:1.
Any more boost with the stock comp ratio is a waste.
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