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Fuel system suggestions and ideas

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Old 06-06-2016, 10:37 AM
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Car: '91 Firebird
Engine: 468 BBC w/ 8-71 blower
Transmission: Th400
Axle/Gears: 9-bolt 2.77
Fuel system suggestions and ideas

I've got a 468 with an 8-71 blower dual carb set up, I'd like to keep my stock tank if possible. It was a V6, so it still has the in tank pump, my question is can I remove the in tank pump, drill a spot in the lowest point of the tank and weld in an AN fitting to feed my external pump. Also, I'm thinking of running 1/2" supply and 3/8" return? How's that sound? I tried a search for fuel system modifications and found nothing to help me in this situation. Thanks in advance!!
Old 06-06-2016, 04:32 PM
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Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Fuel system suggestions and ideas

Originally Posted by 8587ta
I've got a 468 with an 8-71 blower dual carb set up, I'd like to keep my stock tank if possible. It was a V6, so it still has the in tank pump, my question is can I remove the in tank pump, drill a spot in the lowest point of the tank and weld in an AN fitting to feed my external pump. Also, I'm thinking of running 1/2" supply and 3/8" return? How's that sound? I tried a search for fuel system modifications and found nothing to help me in this situation. Thanks in advance!!
I run a 1/2 feed and 3/8 return. You could weld a sump to the tank.
Old 06-06-2016, 05:24 PM
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Car: '91 Firebird
Engine: 468 BBC w/ 8-71 blower
Transmission: Th400
Axle/Gears: 9-bolt 2.77
Re: Fuel system suggestions and ideas

So you're saying that what I was thinking of doing would be fine? Or is welding on a sump something else?
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