05-05-2020, 10:50 AM
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CC Member
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Join Date: Sep 2018
Location: Howell,
NJ
Cobra Make, Engine: Backdraft Car #1209 Roush 427R
Posts: 607
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Not Ranked
Secondary Power valve.
I recently installed a Quick Fuel vacuum secondary adjuster to replace the Holley spring one that came with the carb. It works great. Prior to doing so, I removed the secondary power valve, installed a block off plate and bumped up the secondary jets to 8 sizes. A lot of documentation out there about the pro's and cons of doing this. I like the way the car performs without it.
Fred
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