What pulley on 03 Cobra?

Discussion in 'SVT Tech Forum' started by ColinDerksen, Dec 13, 2003.


  1. ColinDerksen

    ColinDerksen Founding Member

    Joined:
    Nov 11, 2001
    Messages:
    144
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Canada
    I am ondering what pulley you guys suggest for a 03 Cobra? Should I go with a 2.80 or a 2.93? How much more boost is the 2.80 putting out?
    Also what do you suggest for MAFs and TBs?
    Thanks
    Colin
  2. Miklowcic

    Miklowcic New Member

    Joined:
    Apr 25, 2001
    Messages:
    2,438
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Hillsborough, NJ
    ...

    All I have powerwise is a 2.80 pulley, Superchip and BFG Drag Radials. I am getting 14psi with the 2.80.

    435hp 496TQ

    Next thing Ill do is probably Bassani COmplete exhaust and keep the cats out...trying to pay it off first though.
  3. Uncle Meat

    Uncle Meat Banned

    Joined:
    Jun 13, 2002
    Messages:
    3,867
    Likes Received:
    3
    Trophy Points:
    0
    Location:
    Prattville, Alabama
    The 2.80 will produce a little more tourqe from what I've read, but not much of a HP increase. You start going smaller than a 2.93 and you have to look at belt wrap and larger idler pulleys because the initial boost will be there, but at the upper RPM's it'll drop a few lbs due to belt slip.

    Don't waste your time or money on a TB or MAF. There are plenty of '03's out there that are well over 500HP/TQ (KB equipped) that still have the stock MAF & TB. The stock MAF is good to a little over 500 HP and can be modified to handle more if needed. The TB's do flow more CFM than the stock unit, but again unless you have a KB and are putting down 600+HP you'll see little to no gain from adding one.

    My 2 cents

    U.M.
  4. Vic_Ferrari

    Vic_Ferrari New Member

    Joined:
    Sep 25, 2003
    Messages:
    273
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    lake mary, FL
    Go 2.8 with a superchips program.

    This Thursday, several magazines wil be on site with my 03 Cobra on one of Superchips brand new Superflow dynos.
    The mod list will be:
    Air filter, exhaust, headers, catted h-pipe, 2.8 upper pulley, accufab, new belt and tensioner, custom superchips program.
    I'll post complete data from the runs when they are done and you'll see articles in some of the mags soon.

    Installing those dynos was a pain in the ass!
    I'm glad it's done.

    Vic
  5. Venomized281

    Venomized281 New Member

    Joined:
    Aug 13, 2003
    Messages:
    11
    Likes Received:
    0
    Trophy Points:
    0
    Don't forget that you'll start to generate more heat too. If you go with a 2.80 or smaller, look into buying a new heat exchanger.
  6. 95GTS

    95GTS Founding Member

    Joined:
    Mar 13, 2000
    Messages:
    871
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    Corpus Christi, Texas
    I use the 2.93 with the mods in my sig. I don't have a custom chip or the Predator but use the Afterburner eFPC to tune my air-fuel. I hit 441rwhp/434rwtq SAE with about 2100 miles on the car. My air-fuel starts at about 12.5:1 and gradually works its way down to 11.5:1 by 6500rpm at WOT. Maybe now, with a bit more break-in time (just hit 4,000 miles), I have a few more. No track times yet but will hit the track this spring.
  7. Derek@amazon

    Derek@amazon New Member

    Joined:
    Nov 4, 2003
    Messages:
    42
    Likes Received:
    0
    Trophy Points:
    0
    pulley wise there really isnt much difffence between a 2.93 and a 2.80 on a stock HE system. same with a 2.75. my suggestion is a 2.80 and a custom tune for your car.

    as for mass air. leave it stock. unless your going to a KB or a works i would leave the stock mass air on it. all the C&L's really do on a relitivly stock car is lean it out a bit.

    T/B. again unless you really want to get every thing you can out of the car leave it alone. the biggest gain you get out of it is throttle responce on a relitvly stock car.

    Derek
    PM me if you want more details

Share This Page