what size pulley upgrade is recommended?

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what size pulley upgrade is recommended? - 1/18/2008 8:28:59 PM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline Greetings everyone!....I'm new to the forum.  I have a couple of ?'s.  I have an 03 Cobra.  I have no mods, and i'm looking to do a pulley upgrade.  I have noticed I guess when someone begins to do a pulley upgrad they either get a 2.76 or 2.80 size pulley! Correct me if i'm wrong.  What's the difference between these to pulleys? Does one give more psi than the other? Which one is recommended? Is it also necessary to get a bigger Heat Exchanger? If I do make a pulley upgrade what programmer is recommended or works best? Or do I have to have a custom tune for the upgrade?  Once getting the pulley is their a specific size of idler I need to get?     _____________________________ rawcobra _____________________________ Post #: 1

RE: what size pulley upgrade is recommended? - 1/18/2008 9:31:49 PM    limp1969   Posts: 131 Joined: 12/4/2007 Status: offline i have a 2.80 _____________________________ 1965 2+2 fastback 4 speed tri power 1968 gt\cs 1970 mach 1 428scj 4 speed 3:91 1990 gt 1998 cobra 2003 cobra 456rwhp (in reply to rawcobra) Post #: 2

RE: what size pulley upgrade is recommended? - 1/18/2008 10:30:19 PM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline oh cool! how much horsepower are you pushing with the 2.8? _____________________________ (in reply to limp1969) Post #: 3

RE: what size pulley upgrade is recommended? - 1/19/2008 7:59:50 AM    limp1969   Posts: 131 Joined: 12/4/2007 Status: offline rwhp 456 with cold air intake and headers cat back _____________________________ 1965 2+2 fastback 4 speed tri power 1968 gt\cs 1970 mach 1 428scj 4 speed 3:91 1990 gt 1998 cobra 2003 cobra 456rwhp (in reply to rawcobra) Post #: 4

RE: what size pulley upgrade is recommended? - 1/19/2008 10:43:23 AM    Blownsvt Posts: 1996 Joined: 7/29/2006 Status: offline every car responds a bit differently.  i did a 2.76 when i did mine, a heat exchanger is not needed but won't hurt.  the 2.76 should yeald a little more boost than the 2.8 but not much.  i reccomend a dyno tune at your local shop.  most people either use a predator or an sct tuner. _____________________________ 2003 10th cobra 763.8 rwhp 822rwtq @ 21#''s (in reply to limp1969) Post #: 5

RE: what size pulley upgrade is recommended? - 1/19/2008 11:14:35 AM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline ok! thanks! _____________________________ (in reply to limp1969) Post #: 6

RE: what size pulley upgrade is recommended? - 1/19/2008 11:16:36 AM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline oh ok! thanks! when you did a 2.76 how many horses did you get? _____________________________ (in reply to Blownsvt) Post #: 7

RE: what size pulley upgrade is recommended? - 1/19/2008 11:25:00 AM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline cool! thanks! how many horses did you get when you put the 2.76 pulley on your ride? _____________________________ (in reply to Blownsvt) Post #: 8

RE: what size pulley upgrade is recommended? - 1/19/2008 11:44:55 AM    Blownsvt Posts: 1996 Joined: 7/29/2006 Status: offline i hit 447 but others around here have seen in the 470s _____________________________ 2003 10th cobra 763.8 rwhp 822rwtq @ 21#''s (in reply to rawcobra) Post #: 9

RE: what size pulley upgrade is recommended? - 1/19/2008 11:52:16 AM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline wow! cool thanks! _____________________________ (in reply to Blownsvt) Post #: 10

RE: what size pulley upgrade is recommended? - 1/19/2008 12:44:06 PM    Blownsvt Posts: 1996 Joined: 7/29/2006 Status: offline with a port and 2.93 upper and 4# lower i hit 522rwhp _____________________________ 2003 10th cobra 763.8 rwhp 822rwtq @ 21#''s (in reply to rawcobra) Post #: 11

RE: what size pulley upgrade is recommended? - 1/19/2008 4:05:55 PM    white venom   Posts: 873 Joined: 1/19/2007 Status: offline 2.8 moto blue pulleys ftw _____________________________ enough mods to run a 7.8 in the eighth (in reply to Blownsvt) Post #: 12

RE: what size pulley upgrade is recommended? - 1/19/2008 7:39:43 PM    limp1969   Posts: 131 Joined: 12/4/2007 Status: offline mine was dynoed it also has a bigger throttle body forgot to give that info how much do you really need the tire wont even stick to the grown with what little I did. This is why you see saleens and roush cars making less hp and put the money in the brakes, tires ,bigger wheels, suspension etc 450 rwhp is faster than most of use are drivers by far _____________________________ 1965 2+2 fastback 4 speed tri power 1968 gt\cs 1970 mach 1 428scj 4 speed 3:91 1990 gt 1998 cobra 2003 cobra 456rwhp (in reply to white venom) Post #: 13

RE: what size pulley upgrade is recommended? - 1/20/2008 2:54:12 PM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline that's massive power! _____________________________ (in reply to Blownsvt) Post #: 14

RE: what size pulley upgrade is recommended? - 1/20/2008 2:57:05 PM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline it's cool! hey thanks for the info! 450 wrhp is massive! Attachment (1) _____________________________ (in reply to limp1969) Post #: 15

RE: what size pulley upgrade is recommended? - 1/20/2008 3:00:17 PM    rawcobra Posts: 66 Joined: 1/18/2008 Status: offline thanks! _____________________________ (in reply to white venom) Post #: 16

RE: what size pulley upgrade is recommended? - 1/20/2008 3:32:38 PM    white venom   Posts: 873 Joined: 1/19/2007 Status: offline 450rwhp got boring to me. lol i need more!! _____________________________ enough mods to run a 7.8 in the eighth (in reply to rawcobra) Post #: 17

RE: what size pulley upgrade is recommended? - 1/20/2008 4:14:50 PM    redeye Posts: 223 Joined: 12/18/2007 Status: offline i would call rick at amazon hes got pulleys in stock , and can send you a tune to go with it , thats dead on. hes done the most in the U.S , tunes for life he calls it , he just did my car i drove 630miles  to him. im going to see if he wants to be a vender on this site. hes the 03/04 master ! _____________________________ KB2.6 to much to list 603/525 19 psi 93 gas 641/557 19psi 104 gas amazon tuned #s on mustang dyno (in reply to white venom) Post #: 18

RE: what size pulley upgrade is recommended? - 1/20/2008 4:45:30 PM    limp1969   Posts: 131 Joined: 12/4/2007 Status: offline you should buy a viper or lamborghini if 450rwhp is boring at 19. are you on the track( not drag racing)? _____________________________ 1965 2+2 fastback 4 speed tri power 1968 gt\cs 1970 mach 1 428scj 4 speed 3:91 1990 gt 1998 cobra 2003 cobra 456rwhp (in reply to redeye) Post #: 19

RE: what size pulley upgrade is recommended? - 1/21/2008 2:43:38 PM    AZ SNAKE Posts: 295 Joined: 7/23/2007 Status: offline I would do a CAI and Exhaust/x-pipe before the pully or do it all at the same time.  And a dyno tune. _____________________________ Ported Eaton Solid Axle 31 spline w/3.73's and a few other goodies...... (in reply to limp1969) Post #: 20

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