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Thread: Fuel Feed & Return Line Questions

  1. #1

    Default Fuel Feed & Return Line Questions

    What size & type of fuel lines are recommended, and same info for return line. Is a return line mandatory?
    Thanks. For a Ford 351W/427 in a Factory Five MK IV Roadster.

  2. #2
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    Quote Originally Posted by pcww View Post
    What size & type of fuel lines are recommended, and same info for return line.
    https://www.holley.com/products/fuel...l_system_kits/ (Holley EFI Fuel System Kits)
    https://www.holley.com/document/199r10653rev3.pdf (Terminator EFI Manual - Page 8)

    Is a return line mandatory?
    Yes. All Holley EFI systems use a fuel return line, which should be the same size as the feed line.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3

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    Thanks Danny. Still have some questions:
    1. What size should the fuel line be? Nothing in manual.
    2. What specs for filter? Capacity?
    3. Same for regulator?
    4. All of the kits require purchase of pump which I already have.

  4. #4
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    Quote Originally Posted by pcww View Post
    1. What size should the fuel line be? Nothing in manual.
    For your application, -6AN line or 3/8" fuel hose.

    2. What specs for filter? Capacity?
    https://www.holley.com/products/fuel...s/efi_filters/ (Select 10 Micron Post Filter)

    3. Same for regulator?
    https://www.holley.com/products/fuel...s/parts/12-846 (HP Billet EFI Bypass Fuel Pressure Regulator)

    4. All of the kits require purchase of pump which I already have.
    https://www.holley.com/products/fuel...in-line_pumps/ (Holley's Fuel Pumps are excellent.)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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