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Old 01-10-2018, 04:30 AM   #1
spitfire980
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Join Date: Aug 2015
Location: Abu Dhabi
Posts: 71
Carb'd LSX, what are these holes for?

Hi Guys

I got these holes that i dont know what they are for,

Any help would be appreciated

Its an LS1 with a Edelbrock 71187 Performer RPM Dual Plane Intake Manifold

The hole on the side of the intake, whats this for?


The passanger side valve conver has 2 vent tubes, should i block them off?



The driver's side valve cover, whats this for?
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