Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
09-17-2006, 11:22 PM
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LS6 Fuel Pump
I just bought a new AC Delco fuel pump for my LS6 Chevelle , part # is 6470424, it doesn't have that deep of a fuel bowl, did I get the correct one?
Louis
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1970 Ls6 Chevelle 
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#2
09-18-2006, 12:21 AM
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Re: LS6 Fuel Pump
It depends.That's an AC #40727 pump,and early built LS-6's did receive them.
To be certain,look in box #33 if you have your buildsheet. If it shows #768,short for AC #40768,then it received the higher volume GM #6470307 fuel pump instead. If you don't have a buildsheet,tell me which month and asssembly plant your Chevelle was built at.
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#3
09-18-2006, 05:51 PM
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Re: LS6 Fuel Pump
Mr70, my car was built the 3rd week of January 1970 at the Baltimore plant. Do I have the right pump?
Louis
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1970 Ls6 Chevelle
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#5
09-18-2006, 06:48 PM
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Re: LS6 Fuel Pump
If I'm mistaken, there are different fuel lines according to which pump, also? Seems like I remember getting mismatched parts when doing my LS6...
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#6
09-18-2006, 06:53 PM
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Re: LS6 Fuel Pump
Yes there is. The 40727 used the single inlet feed line and the 40768 used an additional return line to the tank requiring different fuel line clips and fuel sending unit.
Rick
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Rick Nelson Musclecar Restoration and Design, Inc (retired) www.musclecarrestorationanddesign.com https://www.youtube.com/watch?v=62r-6vgk2_8 specialized in (only real) LS6 Chevelle restorations
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