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Demon Carbs Question (s)!!!

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Old Jul 30, 2003 | 10:57 PM
  #1  
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Default Demon Carbs Question (s)!!!

I've got a Fastburn 385 under the hood and I'm wondering which Demon carb to go w/. I should also let you know that I'm planing to put a little more cam in the engine (along the lines of the hot cam, but from Crane or Comp) along with 1.6 rockers. It has TH350 automatic tranny.

Should I go with the Speed Demon Crate Carb w/ 650cfm or a 750cfm Speed Demon?? Also, should I go with vacuum or mech Secondaries??

What do you guys think?
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Old Jul 31, 2003 | 12:35 AM
  #2  
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Default Re: Demon Carbs Question (s)!!! (Crickett)

Is it a 385 cu in or a 350? 650 for the 350, 750 for 383 and up to 468.

They normally recommend vac secondaries for autos.
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Old Jul 31, 2003 | 12:45 AM
  #3  
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Default Re: Demon Carbs Question (LAvetteman)

its a 350

385 horse

I'd say 650 would work :cheers:
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Old Jul 31, 2003 | 01:18 AM
  #4  
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Default Re: Demon Carbs Question (Corzvette69)

its a 350

385 horse

I'd say 650 would work :cheers:
:withstupid: A 750cfm would be overkill. A 650cfm would give better thrttle response and better mileage as well.

:cheers:
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Old Jul 31, 2003 | 05:29 AM
  #5  
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Default Re: Demon Carbs Question (Corey 68)

A 750cfm would be overkill. A 650cfm would give better thrttle response and better mileage as well. :cheers:
:iagree: I dunno about "better" mileage though... :eek:
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Old Jul 31, 2003 | 06:51 AM
  #6  
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Default Re: Demon Carbs Question (Mystery Machine)

I have a 650cfm Speed Demon with mech secondaries and no choke and I like it! :D
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Old Jul 31, 2003 | 07:58 AM
  #7  
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Default Re: Demon Carbs Question (Graemeinvette)

I have the 650 Speed Demon on both my 75 vette with a 350 and my 383 Camaro, both run great.
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Old Jul 31, 2003 | 08:42 AM
  #8  
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Default Re: Demon Carbs Question (Paul 75 L82)

I have the 650 Speed Demon on both my 75 vette with a 350 and my 383 Camaro, both run great.

:withstupid: I love my Speed Demon it rocks. Plenty of carb for your set-up
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Old Jul 31, 2003 | 06:59 PM
  #9  
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Default Re: Demon Carbs Question (s)!!! (Crickett)

Cool deal!! Thanks guys!! :thumbs:
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