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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Carburetor Question

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Old Jun 7, 2012 | 07:28 AM
  #1  
sleep_deprived129's Avatar
sleep_deprived129
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From: Everett, WA
Carburetor Question

I have a 1970 F-100 with a 302. It has headers, a mild cam and will get an Edelbrock dual-plane performer intake with the carb. Right now I am looking at a Holley 600 cfm but I have been told this might be too much carb. I know by the 'cfm equation' it says 480. However looking at a carb around that size is about an extra $100+. As such I wonder of the 600 will work or can be made to work. I am in no way an expert in fuel delivery so I'm sure someone has more knowledge and/or experience than I and any help or suggestions would be greatly appreciated.
 
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Old Jun 7, 2012 | 09:26 AM
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MIKES 68 F100's Avatar
MIKES 68 F100
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From: Antelope Valley ,CA
600 will work , just make sure it's a vacuum secondary for these heavy trucks .
i've been running a 600cfm holley on my 65 mustang 289 for years , runs real good .
 
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Old Jun 7, 2012 | 08:32 PM
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sleep_deprived129
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From: Everett, WA
Yeah, definitely vacuum secondaries, I want a little more power but it is still a street car so I'd rather not massacre my gas mileage completely. Thanks for the help, that's actually what I was hoping for is people who have run these size carbs on their motors.
 
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