Thread: Low on power?
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Old 09-20-2022, 07:36 PM
cobragene cobragene is offline
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Join Date: Dec 2020
Location: Baltimore, MD
Cobra Make, Engine: Everett Morrison FE 428
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Patrick your not going to believe this,I did the rag test and they opened fully however I also removed the zip tie on drivers side and put a bread tie on the diaphragm rod before the test. I removed the rag and they did open fully on the second run. My zip tie was to wide, so anyone doing this test use a skinny zip tie. All and all the power wasn’t much different. I think I will have a dyno and tune session and maybe better sidepipes. Lastly a double pumper but I hope not. It was noted that Holley recommends DP for our cars, would it also benefit from a larger nozzle on vac sec? Thank you all for your help
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