Thread: Holly 770 Street avenger final tunning results
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Old 09-04-2014, 12:00 PM
genolan genolan is offline
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Join Date: Sep 2013
Location: Sparta, nj
Cobra Make, Engine: Backdraft 1048
Posts: 269
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Default Holly 770 Street avenger final tunning results
I wanted to close out my Carb tuning, I started with a 408 engine and a 770 Holly street avenger with Vacuum secondary.

Carb was stock with the following
pri jet 72
sec jet 75
pump nozzle .25 Green Cam
pwr valve 6.5
secondary diap spring silver (vacuum secondary)

Final Tuning resulted in
pri jet 75
sec jet 83
pump nozzle .35 Green Cam
pwr valve 6.5
secondary diap spring White(vacuum secondary)
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Gary
Backdraft 1048
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