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Old 08-21-2019, 07:50 PM   #1
teamtwister
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Join Date: Feb 2017
Location: Canada
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Fuel pump

Hi is there a difference in a 2 barrel and a 4 barrel fuel pump I have a 2 barrel carb on my 72 307 c10 and wont to change it to a rochester 4 barrel but my fuel line is smaller and will not fit 4 barrel
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Old 08-21-2019, 08:12 PM   #2
Steeveedee
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Join Date: Jan 2013
Location: Simi Valley, CA
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Re: Fuel pump

If you still have the 307 engine in your truck, you could simply change the adapter fitting on the pump if it has one and run a 3/8" line. Fuel demand isn't actually going to change if you still have the 307. Or you can get a 3/8" to 5/15" inverted flare reducer to install the line at the carburetor. Or go to neoprene hose and the proper fittings.
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