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'91 5.0 HO build

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  • #1

    '91 5.0 HO build

    First timer at building an engine... so I am looking for a little advise. Looking through the forums and my bank book, I came up with a top end parts list. I am keeping the lower end stock, at least until it is inspected by someone more knowledgeable than me. According to the PO the engine was in a bronco and ran great. He is changing to 4bt cummins.
    I want to upgrade the heads so that is where I started, the list ballooned from there.
    Any advise is welcome.

    Cylinder Head Bolts, High Performance, Hex Head, Ford, 289-302, with Stock, Edelbrock Performer, RPM Heads
    ARP-154-3601
    $49.86
    Camshaft, Hydraulic Roller Tappet, Advertised Duration 266/270, Lift .533/.533, Ford, 5.0L, Each
    CCA-35-308-8
    $296.97
    Pushrods, Hi-Tech, Chromoly, Heat-Treated, 5/16 in. Diameter, 6.250 in. Length, Universal, Set of 16
    CCA-7917-16
    $134.97
    Timing Chain and Gear Set, Heavy Duty, Double Roller, Iron/Billet Steel Sprockets, Ford, Small Block, Set
    CLO-C-3054X
    $39.97
    Cylinder Head, GT40X, Aluminum, Assembled, 58cc Chamber, 178cc Intake Runner, Ford, 302, 351W, Each $599.97
    FMS-M-6049-X307
    $1,199.94
    Lifters, Hydraulic Roller, Ford, Set of 16
    FMS-M-6500-R302
    $125.97
    Rocker Arm Channel, Steel, Black, Ford, 5.0L/5.8L, Kit
    FMS-M-6588-A50
    $22.97
    Rocker Arms, Pedestal Mount, Full Roller, Aluminum, 1.6 Ratio, 5/16 in. Bolt, Ford, Small Block, Set of 16
    SCC-SCP1021BL
    $275.97
    Tags: 5.0, gt40x
  • #2
    Re: '91 5.0 HO build

    You will LOVE the 35-308-8 cam. I had mine built into the identical engine but had a pro in Concord build it. I went with the GT40P heads and did a 9.5 compression ratio. Plenty of power on regular gas.
    Relativity: Where ever you go, there you are.

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    • #3
      Re: '91 5.0 HO build

      If your spending over 1k for heads get afr165. Everywhere I read says they are the best head for the price range, flowing much better and putting down more power.
      70 eb 60f 14b mild 302 435-klune 4-1-np205 and some dents

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      • #4
        Re: '91 5.0 HO build

        Originally posted by bent70 View Post
        If your spending over 1k for heads get afr165. Everywhere I read says they are the best head for the price range, flowing much better and putting down more power.
        I totally concur! I don't think the GT40X heads are really going to fit your application. 165s will flow all that you need and the smaller runners will boost your low end torq.
        72' in pieces and piles of awesomeness

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        • #5
          Re: '91 5.0 HO build

          Thanks for the input. I am lookiing at the afr 1399 heads. Any reason to use a smog head instead?

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          • #6
            Re: '91 5.0 HO build

            Only if you have to pass smog... 1976 or newer.
            SOLD: 1975 Ford Bronco: 105" wheelbase, King 14" c/o shocks, King 2" air bumps w/ Duff arms, 4 link rear w/ coils. Fuel injected 408W, ZF 5 speed/Atlas II(4.3) and Dana 60/70 axles with 5.13 gears and ARB's, 41.5/13.5R17 Pitbull Rockers on 17" Raceline Monsters.

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            • #7
              Re: '91 5.0 HO build

              Might throw a stud girdle in there while you are at it. Assume this is carbureted, if not...bigger injectors, MAF and maybe a tune.

              AFR 1399 heads are great. I have the Trick Flow 170's and like them a lot.

              Make sure the oil pump is good...its just money, but the flowkooler waterpumps are very nice too...

              Sounds like a great project.

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