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Old 02-26-2009, 11:19 AM
  #1  
Dream Oval
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I just purchased a 89 GT, finally. I am wondering what direction to go next. Here is what I have to my knowledge. Cold air, GT40 intake, E303 cam, 30# injectors and upgraded fuel rail. The exhaust consist of shorty headers, H-pipe with flow masters. I have 3.73 gears with a 5 speed. I am wondering if I need more air because of the size of the injectors but it seems to run great. I was also wondering about the ignition which is stock and rev limits about 5700 rpm. I appreciate any input I can get.
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Old 02-26-2009, 11:42 AM
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Catchpole
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Yea, if you don't have them you'll need a bigger MAF and throttle body. You got your self a decent platform, I'm jealous lol
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Old 02-26-2009, 12:05 PM
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cch
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^+1 you should probably look into upgrading your fuel pump if it's just stock. Add a nice li'l set of heads and you'll have yourself a decent combination.

Last edited by cch; 02-26-2009 at 02:49 PM.
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Old 02-26-2009, 03:52 PM
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Timspony
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Welcome ^^^^! ...I would go with 24# injectors unless you plan on adding a SC or Turbo...
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Old 02-26-2009, 03:53 PM
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mjr46
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Originally Posted by Dream Oval
I just purchased a 89 GT, finally. I am wondering what direction to go next. Here is what I have to my knowledge. Cold air, GT40 intake, E303 cam, 30# injectors and upgraded fuel rail. The exhaust consist of shorty headers, H-pipe with flow masters. I have 3.73 gears with a 5 speed. I am wondering if I need more air because of the size of the injectors but it seems to run great. I was also wondering about the ignition which is stock and rev limits about 5700 rpm. I appreciate any input I can get.
put a real h/c/i on there that'll use those 30 lb'ers to their full potential, your 5700 rpm limit is in no doubt due to cam choice and valvetrain capability or lack there of.....
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