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Holly 770 Street Avenger Fuel pressure

Holly 770 Street Avenger Fuel pressure

Old November 7th, 2018, 03:42 PM
  #1  
1969 Oldsmobile 442
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Andrew Francis's Avatar
 
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Location: Salem, MA
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Post Holly 770 Street Avenger Fuel pressure

Anyone else running the Holly SA 770? If so what fuel pressure are you running? I have an electric fuel pump and regulator from Aeromotive. When I first took delivery of the car the fuel pressure reading from my guage was around 3psi.. this seemed low to me so I looked up the recommendations. According to the Holly reference guide the carb calls for around 6-8psi. Is there any reason to run less in my current set up? I went ahead and adjusted the fuel pressure to 7psi from the regulator and followed it up with a tune of the carb. Is this too high in peoples experience or was the previous owner of this car running it too low?

1969 442 w/ 455
The car has performance cams, rods and rockers and is bored over.
Torker intake and dynomax full exhaust headers back.
MSD elec ingnition 6AL.

Thanks in advance
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Old November 7th, 2018, 04:13 PM
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The recommended fuel pressure is 5-7#'s, I prefer 6.5. As long as its not flooding the bowls your good.
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Old November 7th, 2018, 04:28 PM
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1969 Oldsmobile 442
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Location: Salem, MA
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Originally Posted by oldcutlass View Post
The recommended fuel pressure is 5-7#'s, I prefer 6.5. As long as its not flooding the bowls your good.
Awesome. Thanks!
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