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Old 04-15-2019, 02:09 AM   #1
andrewpclayton
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Fuel return line 77 sbc into 69 with in cab tank

I am putting a 77 350 engine into a 69 with the stock in cab fuel tank

The fuel pump on the 77 engine has the fuel line in and a return line.

What’s the best way for me to make this work

new fuel pump with no return?

make a return line into the stock tank?

Thanks in advance
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Old 04-15-2019, 06:49 AM   #2
tj1970cst
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Re: Fuel return line 77 sbc into 69 with in cab tank

If you do not want to install a return line, replace the pump.

I believe the return was to help prevent vapor lock.
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Old 04-15-2019, 07:17 AM   #3
Redneck Rydes
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Re: Fuel return line 77 sbc into 69 with in cab tank

X2 get a pump for a 70 and back or with just 2 ports,
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Old 04-15-2019, 10:24 AM   #4
Steeveedee
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Re: Fuel return line 77 sbc into 69 with in cab tank

X3. If you have no vapor lock issues, just use a '70 style pump.
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Old 04-15-2019, 11:08 PM   #5
andrewpclayton
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Re: Fuel return line 77 sbc into 69 with in cab tank

Bought the pump today.. thanks everyone!
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Old 04-16-2019, 08:46 PM   #6
Redneck Rydes
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Re: Fuel return line 77 sbc into 69 with in cab tank

Good,hope it all works out for you.
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Old 04-17-2019, 02:21 PM   #7
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Re: Fuel return line 77 sbc into 69 with in cab tank

Another option would be a 72 sender it has 3/8 and a 5/16 tubes
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