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Thread: Fuel Rail Plumbing

  1. #1

    Default Fuel Rail Plumbing

    I'm trying to setup fuel system for <800 HP NA BBC combo. Tentatively planning on running a -8 feed to the engine where it will connect to a Y-Block. Then 2 -6 out of the Y-block with one line going to each rail. Then out of the other end of the rail the -6 lines will connect to a common regulator. The return out of the regulator will be a -8 back to the tank.

    It seems to me that surely feeding both rails with their own -6 should be sufficient. However I see lots wanting -8 rails, etc. Unfortunately, the rails I have are -6 in/outlet, so it seems pointless to put flares on them to run -8 lines. Since feed/return is also limited to a -8 due to plan to run 1/2" SS hard line under car. Then again, the cost to replace all the fittings later if there are problems is > cost of new rails. Thoughts before I dump a boatload into all the -6 plumbing? Thanks, John

  2. #2
    Join Date
    Dec 2009
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    Default

    http://documents.holley.com/199r10510rev.pdf (Read Sections 10.0 & 10.1, "Plumbing" & "Fuel Line Sizes", Pages 7 & 8)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

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