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04-30-2007, 02:13 PM
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#1 |
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Registered Member
Join Date: Apr 2004
Location: Apalachicola, Florida
Posts: 50
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Holley Carb help?
I need help choosing what cfm carb i will need.
306 engine E-303 cam gt-40 heads BBK headers 4.10 gears TKO tranny It was a EFI setup but went to carb. It was a very strong engine with EFI but i have changed to a victor jr. intake and not realy sure on the cfm's i'll need to get the most from the engine. May put a small shot of nos later. |
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04-30-2007, 06:28 PM
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#2 |
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Ride Hard
Join Date: Oct 2000
Location: Wyoming IL
Posts: 1,094
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Re: Holley Carb help?
Most will tell you a 600-650 will be just fine and I would agree with that.
Ryan
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65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored |
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05-01-2007, 03:40 PM
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#3 |
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Rat Killer
Join Date: Aug 2002
Location: Cold ass Ohio
Posts: 1,143
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Re: Holley Carb help?
ENGINE MILD HOT WILD
300......N/A..600...650 350......600..650...750 400......650..750...800 450......750..800...850 500......750..850...950 550......850..950...1000 stock vehicle is mild hotrod is hot race car is wild If you're a math dork, the formula is CIxRPM/3456 Or, if you're just lazy, hit this link and follow the directions (up at the top, enter "306": http://www.holley.com/index.asp?division=Holley
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d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply..... 
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05-06-2007, 05:44 AM
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#4 |
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Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
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Re: Holley Carb help?
I'd get a 4777 (650 dp).
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Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local
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05-08-2007, 09:23 AM
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#5 |
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Registered Member
Join Date: Apr 2004
Location: Apalachicola, Florida
Posts: 50
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Re: Holley Carb help?
Well i bought a 600dp holley and think it may be just right. can't wait to fire it up...2006 099.jpg
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05-10-2007, 09:26 PM
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#6 |
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Rat Killer
Join Date: Aug 2002
Location: Cold ass Ohio
Posts: 1,143
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Re: Holley Carb help?
And now the headaches start..... LOL
Good choice, but not the one I would have made. BUT, either way, plan on LOTS of tuning to get that sucker dialed in. I'm not a big fan of "chokes", but I don't leave the garage until I'm up past 140* either. That's a good carb, and it'll treat you well. If you "listen" to it. It'll tell you what it wants. 
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d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....
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05-10-2007, 09:40 PM
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#7 |
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Registered Member
Join Date: Apr 2004
Location: Apalachicola, Florida
Posts: 50
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Re: Holley Carb help?
Yeah your right about the tuning. I just hope everything go's smooth.I set everything on motor for a test fit and there is no room for breather will be looking for a hood now. I'll post picks of engine when it's finished.
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