1979 Z28 Build

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  #41  
Old 12-02-2010, 06:22 PM
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Oh, I dont know much about body work so i'm getting that done. I am going to do as much of the interior as I can though. Are you doing all of yours?
 
  #42  
Old 12-02-2010, 06:22 PM
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im going with the holley 770 street avenger carb, from reviews the people love them, easy to tune, with all the extras =]
 
  #43  
Old 12-02-2010, 06:33 PM
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Cool man, Mech secondaries or no?
 
  #44  
Old 12-02-2010, 06:35 PM
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umm im not sure on that one
http://www.holley.com/0-86770BK.asp
 
  #45  
Old 12-02-2010, 06:41 PM
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Ok, i'll check it out. Thanks for the recommendation. I just want mechanical secondaries so they will be there regardless of vacuum.
 
  #46  
Old 12-02-2010, 08:05 PM
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The Street Avenger series use vacuum secondaries. Unless you're building a all out race engine that you want to also drive on the street you'll want vacuum secondaries. On the average hotrod engine mechanical secondaries will cause a bog if you mash the throttle in a low vacuum condition.
With vacuum secondaries the engine reaches peak vacuum and brings in the secondaries as the vacuum optimizes. Much more low end power, and better throttle response for street vehicles.
 
  #47  
Old 12-02-2010, 10:32 PM
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exactly why i need it =]
 
  #48  
Old 12-03-2010, 12:06 AM
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Hey, you got a nice little small block there. But I have just one question. Why spend all that money and the cheap out on the timing chain? Its like you have all these nice aftermarket parts (roller rockers) then the cheesiest timing chain you could get.
 
  #49  
Old 12-03-2010, 05:03 PM
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Originally Posted by 1971BB427
The Street Avenger series use vacuum secondaries. Unless you're building a all out race engine that you want to also drive on the street you'll want vacuum secondaries. On the average hotrod engine mechanical secondaries will cause a bog if you mash the throttle in a low vacuum condition.
With vacuum secondaries the engine reaches peak vacuum and brings in the secondaries as the vacuum optimizes. Much more low end power, and better throttle response for street vehicles.
so forgive me for sounding like such an idiot but what exactly would a "low vacuum condition" be? because sometimes if i hit the gas from a stop light my car bogs down
 
  #50  
Old 12-03-2010, 05:11 PM
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you have the wrong carb,,, your stop light is your low vacuum condition, theres no pressure built up, once the engine is up in higher rpm vacuum is created, high vacuum condition where the mech secondaries are more needed
 


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