Vacuum secondaries spring

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1 Post By FredG

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04-29-2020, 08:45 AM

FredG

CC Member

Join Date: Sep 2018

Location: Howell, NJ

Cobra Make, Engine: Backdraft Car #1209 Roush 427R

Posts: 607

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Mechanical secondaries

I have a brand new polished and blue 870 with vacuum secondaries so I will have to live with it. I did go with the QFT adjustable vacuum secondary. Put it on yesterday and it's a definite improvement right out of the box at the default setting over the Holley springs. Very smooth secondary fuel delivery. I will adjust it some for the performance I like.

Fred

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