Thread: carb sizing
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Old 12-19-2019, 08:08 PM   #6
GASoline71
"I ain't nobody, dork."
 
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Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,724
Re: carb sizing

I have always ran 3310's (750 cfm) on my worked over street strip 350 engines. For funs I built an 1850 (600 cfm) with center hung bowls and a 4 corner idle circuit for my current street/strip 350 in my 1972 GMC. I gotta say the 600 cfm is a lot more fun on the street... When I hit the drag strip I'll take the 750 with me and switch if I need to.

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

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I would never rebuild a 305.
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I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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