Engine 4.6 Engine Builders

Discussion in 'SN95 4.6L Mustang Tech' started by bucstang1, Jan 25, 2014.


  1. bucstang1

    bucstang1 Member

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    Anyone know of a good 4.6 engine builder in Florida? My 99 GT has 220K on it. I'm looking to give it a fresh power plant.
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  2. Nightfire

    Nightfire Mustang Master

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    Looking to replace the motor with another or rebuilding?
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  3. bucstang1

    bucstang1 Member

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    I am open to both options.
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  4. Nightfire

    Nightfire Mustang Master

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    Unless you want to upgrade the motor with stronger internals, simply replacing the entire engine will be cheaper/easier.
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  5. sneaky98gt

    sneaky98gt Mustang Master

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    If you are resourceful and/or a little creative, you can build a 600 horsepower shortblock for less than $1000. That's parts, machine shop work, hardware, gaskets, and fluids. Everything except the labor to actually tear down and reassemble the motor (I'm assuming you could do this yourself).

    If you can wait another week or so, I'll post up a detailed how-to with pictures and everything. Not ready to spill the beans just yet. :D
    #5
    SyberSaint likes this.
  6. bucstang1

    bucstang1 Member

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    Hmmmm so many options. I'm planning on bolting on a trick flow top end kit but don't want to put it on a 200k+ bottom end. having someone else do the build would just be easier, but I'll wait if you're willing to spill the beans.
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  7. Gtwo

    Gtwo Previously 984.65spd

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    He likes the suspense
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  8. SyberSaint

    SyberSaint Founding Member

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    Sneaky, do share....
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  9. sneaky98gt

    sneaky98gt Mustang Master

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    I'll post tomorrow.
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  10. Gtwo

    Gtwo Previously 984.65spd

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    And...
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  11. SyberSaint

    SyberSaint Founding Member

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    Me thinks Sneaky is incognito... LOL
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  12. sneaky98gt

    sneaky98gt Mustang Master

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    Sorry guys. Wound up busy helping a friend out on his car this weekend, and been working 12+ hour days so far this week.

    I'll make a new thread once I get all the receipts and all for proof, but here's a rough draft through.


    Pistons: used 03/04 Cobra pistons. I got mine for $50. Low miles in perfect shape. I've seen them go for around $100 several times on online forums.

    Rods: you can get brand new Boss 302 rods for $180 shipped from Tousley Ford (now called AutoNation Ford White Bear Lake). Just got the email confirmation. Right at $180 shipped.

    Rod bearings: King OEM replacement, from Excessive Motorsports (who now owns Modular Head Shop). $40

    Main bearings: King OEM replacement, from Excessive Motorsports. $55

    Main bolts: OEM replacement, Modular Head Shop. $35

    Rod bolts: OEM Ford. $40

    Rings: ModMax Moly rings. $120

    Head gaskets / bolts: FRPP head changing kit. $90

    Machine shop work on the block: was quoted $100 to hone and clean the block, and polish the crank. I'd figure another $25 to install the pistons to the rods.

    Figure $100 for all the gaskets (intake, oil cooler, timing cover, etc.).

    $50 for oil and coolant.


    All comes out to just under $900. That's for a motor good to 600 rwhp as long as it's kept under 6500ish RPM. As mentioned, I'll post up more specific links and receipts later. But that's all pretty well accurate.
    #12
  13. Nightfire

    Nightfire Mustang Master

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    Don't forget to have the rotating assembly balanced at the machine shop. I paid $200 for mine but should vary place to place.
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  14. sneaky98gt

    sneaky98gt Mustang Master

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    Not necessary as it's externally balanced. As long as you use a matched set of rods, and a matched set of pistons, it'll be fine as long as you aren't going huge RPM with it (<6500) or making super big power (>600). The guy who ported my blower also does engine building (he has the fastest manual transmission Coyote 5.0, i.e. knows what he's talking about), and says he regularly builds mild 2-valve engine builds. For a budget build, he uses the exact same parts I listed above minus the pistons (I think he goes with a cheap set of Mahle's instead). Said he never has it balanced at the machine shop, and has never had a problem.

    Take it FWIW. YMMV.
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  15. Nightfire

    Nightfire Mustang Master

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    Oh really? Hmmm. My builder is always preaching balancing.

    I wonder if the machine shop made any alterations or if it was "balanced" on the first spin and I threw $200 down the drain haha
    #15
  16. joshjwc9

    joshjwc9 Active Member

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    Those rods come with bolts..mine from Tousley/AutoNation had them bolted on.. :)
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  17. sneaky98gt

    sneaky98gt Mustang Master

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    I'm sure they did it, and it definitely is 'better' to have it balanced. The question is whether or not 'better' is needed. My understanding is that the factory tolerances are quite wide when it comes to balancing, and anything aftermarket is well within that range. I suspect the rods I bought from a 2012 Boss 302 are WAY closer to each other than the ones in a 15 year old 2-valve motor. I weighed the pistons/wrist pins I got from a Cobra, and the total range on those was less than .5 grams. So I'm pretty sure I'll be good.

    Just got mine a couple days ago. Noticed that as well. Nice little $40+ savings. :)

    I really need to start up a build thread....
    #17
  18. midnightdriver

    midnightdriver Active Member

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  19. bucstang1

    bucstang1 Member

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    Awesome ... thanks for sharing.
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  20. flstang65

    flstang65 Well-Known Member

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