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Thread: Flat tappet cam

  1. #1

    Default Flat tappet cam

    I know this questions been asked a lot but what’s everyone running for motor oil? Oil with higher zinc content?

  2. #2
    FEP Power Member richpet's Avatar
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    I have a 1990 full sized Bronco with a flat tappet 351. I have run any high quality oil, mainly synthetic, for the last 8 years with problem zero. Many times I have chosen a 'high mileage' oil, sometimes a syn blend. Still never a problem.

    If you want to have more insurance, there are oil additives with zddp you can add. Replaces the zinc, etc that is no longer there. Some are very inexpensive.

    When I built my 83 hatch (also flat tappet) I did the same thing.

    Brands? I have run mainly name brand (Valvoline, Mobile-1, etc) but have also run generic synthetic.

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    83 5.0 GT. Quicker than it looks! 10:1 (or just over) 306, Motorsport a332 cam, 140A alt, t5 conv, 8.8 w/ 3.27's, Edel rpm, alum rad, very worked e7's, Holley SA carb, etc... SOLD IT!!!!

    Now an 1981 Granada! .040 over 302, Edel E-street heads... Currently building a 347 because, why not?

    "Never underestimate the power of stupid people in large groups"

  3. #3

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    I was thinking of running Mobil 1. Car has 89,000 on it.

  4. #4
    Moderator wraithracing's Avatar
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    Quality name brand oil, preferably a synthetic since the price difference is negligible in many cases. Make sure you are using the proper weight for your climate and vehicle use. If it gives you peace of mind add some Zinc additive to the oil, although personally I don't think its needed. Otherwise choose one of the racing oils with higher zinc content such as Driven Racing Oil. Good Luck!
    ​Trey

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  5. #5

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    qsud 0w30 is pretty well regarded. I use European blend 0w40 mobil 1 but my engine rebuilder told me to use 40 weight on his build.
    1984.5 G.T.350 5.0 CFI AOD Convertible (TRX package, loaded)
    K&N filter in a stock dual snorkel, GT40 heads, Edelbrock 3721 intake, MSD 8456 Dist., MSD 8227 coil
    Comp cams XE254H, hypereutectic pistons
    Hooker Super Comp Shorty Equal Length Headers, catted BBK H-pipe, full custom duals
    Maximum Motorsports caster/camber plates and strut tower brace, 3.73 rear, dura grip (both Yukon)
    Ford Performance Springs, Firehawk A/S 225/55r16 on LMR TRX r390 wheels (street)
    Federal 595 rs-rr 245/40r17 and 255/40r17 on OE cobra r wheels (race)
    AOD rebuilt with a 6 clutch direct drum, Koline steels stacked with 8 clutches, Kevlar band, superior shift kit, new torque converter. --Everything else stock and fully functional.

  6. #6

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    Alright thanks guys. I’ve had pretty good luck with 0w40 in all my other foxes

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