School me on V8 muscle

Discussion in 'OT Driven' started by SeaMack99, Apr 22, 2008.

  1. SeaMack99

    SeaMack99 OT Supporter

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    Ok, I've only owned 4bangers my entire life so I don't know shit about V8s.

    One of the guys I work with knows even less than I do and asked me what can he to his Mustang to make it faster. Now due to my knowledge in 4cyl I instantly told him to do basic bolt ons such as full exhaust, intake and cams.

    He came back to me and asked me what the difference between a short/long header. I have absolutely no clue. Can anyone fill me in on this? What are his 'expected' gains from just the basic bolt ons?

    Sorry for the noob post be gentle with me pls:hs:
     
  2. you know me

    you know me OT where the douchbags play

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    what year/model mustang
     
  3. SeaMack99

    SeaMack99 OT Supporter

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    2003 Mach 1
     
  4. you know me

    you know me OT where the douchbags play

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    :eek3: fucking nice. Auto or manual?

    go with:
    exhaust
    non-catted x if you can get away with it, catted if you can't
    long tubes
    4.10 gears/4.56 if manual
    the rest will depend on what kind of "fast" he wants
     
    Last edited: Apr 22, 2008
  5. Smelly-Kitten

    Smelly-Kitten Dept. of Redundancy Department *Side Pipes

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    forged crank if a manual, and i wouldn't say much higher gear if manual over the auto since their last gear ratios are very similar (4R70W vs TR-3650 [machs didn't get the T-56]) so i'd say either 4.10's or 4.30's for the mach. Here's a good recipe that may be helpful

    [​IMG]

    Maximum Motorsprots: Coil over fronts, LCAs, FLSFC's Bilstein struts
    Cobra rear trunklid+spoiler and side mirrors, HID's
    18x9/18x10 FR500's w/ BFG KDW2's
    Steeda bumpsteer, & X2's.
    MGW shftr.
    SSBC rotors & Hawk pads.
    C&L 85mm throttle body
    Mac Long Tube Headers, Mac Off-Road H pipe
    Bassani cat-back
    Xcal2 tune=315rwhp & 327rwtq.

    Longtube headers on any 4.6 will net you MUCh more than short tube headers which are often a waste of time and money. LT's on the other hand help a good deal, especially up top in the rpm's where a Mach 1 should be with the 4V engine.
     
  6. Kenny Powers

    Kenny Powers OT Supporter

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    If you're doing headers, do long tubes. But you'll have to get a new mid pipe. Non-catted would sound great.

    Without getting too technical, the difference is that shorty headers will tend to make power at higher RPMS than long tubes. Long tubes will give you more use-able torque down low.

    You won't see ridiculous gains, but it will sound ridiculous with long tubes and no cats.

    Doing cams on a Mach won't bring a whole lot of bang for your buck if the cars near stock. I'd probably hold off on that.

    A good idea would be to plan for a supercharger. Machs are higher compression from the factory than your regular Mustang/Cobra so you can't run as much boost, but he could be safely be making 400+ rwhp with the stock internals.

    As far as numbers, bolt ons won't wake the car up a whole lot, but they're the supporting mods you'll need down the road, so get them out of the way. Gears will probably make the biggest difference in the 1/4.
     
  7. art_VW_shark

    art_VW_shark OT Supporter

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    Repeat as I say,"Go whipple or go home"
     
  8. Smelly-Kitten

    Smelly-Kitten Dept. of Redundancy Department *Side Pipes

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    Did you mean to write it this way? 2v's and 4v's have shown to even lose torque low end of the curve with LT's. The LT design is all for high capacity flow, i.e high rpm hp. Increased back pressure due to this design causes less tq gains, while a shorty is more suited to reduce backpressure and is slightly better for flow than the stock manifold so picks up 3-5rwhp on a 2V, similar for a 4V.
     
  9. SeaMack99

    SeaMack99 OT Supporter

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    Thanks, this is good stuff.

    I know for a fact that he already has 4.10 gears and a bassani catback. He doesn't want to go supercharged rout. Do dyno tunes show much gains?

    I'm was gonna tell him to go with long headers, throttle body and a good tune :dunno: I took him to a few trackdays with me and he doesn't want much power until learns how to drive it :o
     
  10. Smelly-Kitten

    Smelly-Kitten Dept. of Redundancy Department *Side Pipes

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    more exhaust, some intake, then full length subframe connectors, need springs/struts, then maybe Lower control arms
     
  11. Kenny Powers

    Kenny Powers OT Supporter

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    What I said looks right to me. What I meant is that with shorty headers, your peak range comes on higher and the range is therefore smaller. Not that you're making more high rpm hp.

    Don't know what all this back pressure talk is, but my point is to get long tubes.
     
  12. Kenny Powers

    Kenny Powers OT Supporter

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    Throttle body really isn't going to be worth the money. Getting a tune for the highest octane fuel you have available would be a good idea.
     
  13. Ingen

    Ingen New Member

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    A responsible owner?

    :eek4d:
     
  14. SeaMack99

    SeaMack99 OT Supporter

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    I wouldn't say all that just yet. He still wants to just dump money in the motor. I took him to the track with me and showed him how useless power is if you can't handle it, but you know some people will never learn.

    Ok, so I'm basically gonna tell him to go ahead and get the headers then go to a good tuner to get the car tuned. If that doesn't satisfy his need for speed he's gotta start prepping for FI.
     
  15. Smelly-Kitten

    Smelly-Kitten Dept. of Redundancy Department *Side Pipes

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    you need a new mid-pipe with LT's BTW.
     
  16. Kenny Powers

    Kenny Powers OT Supporter

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    :cool:
     
  17. jeff2577

    jeff2577 OT OG

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    Is he wanting to track the car?
     
  18. SeaMack99

    SeaMack99 OT Supporter

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    I've done everything I can to try to get him to the track but I doubt it will ever happen. He might hit the strip once or twice but I really don't see him doing much else.:hs:
     
  19. jeff2577

    jeff2577 OT OG

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    So basically he just wants bragging rights.

    Tell him to save his money. It's just not worth it in the long run.
     
  20. Mr.Right

    Mr.Right N2O

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    i wouldn't bother with longtubes on a 32v......
     
  21. insomnia

    insomnia New Member

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    he on mighty mustangs? :o
     
  22. SeaMack99

    SeaMack99 OT Supporter

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    Na, the car is actually back in the states and he wants to do this stuff while on leave.
     
  23. SeaMack99

    SeaMack99 OT Supporter

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    Anybody know of any good shops in the ATL area to do the exhaust install and tune?
     
  24. Toke

    Toke New Member

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    Try the SVT forums, they would be much more oriented to good local shops than OT would be.
     
  25. BATMANs

    BATMANs New Member

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    regardless of the v8 ( I have a Supercharged GTO), the TQ, sound, and smooth powerband is sooooo addictive.
     

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