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TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

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Old 11-18-2009, 11:37 PM   #1
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Location: Pensacola Fl
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Car: 85 2M6 Fiero '87 R30
Engine: L44, 7.4 L
Transmission: TH125c, TH400
Axle/Gears: ???, 4.10 14 bolt.

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lets see some customized throttle bodies
post some pics of your modified TBI stuff, I'll go first.









I'm not finished yet, but getting there!
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Old 11-19-2009, 11:28 AM   #2
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Car: 89 Camaro RS
Engine: LO3 TBI
Transmission: 700R4 => WC T-5
Axle/Gears: 3.42 Open Diff

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Re: lets see some customized throttle bodies
Very nice, I need to do this myself. How did you go about smoothing the lips around the throttle bores?
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Old 11-19-2009, 11:39 AM   #3
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Car: 85 2M6 Fiero '87 R30
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Axle/Gears: ???, 4.10 14 bolt.

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Re: lets see some customized throttle bodies
I did all of it with a dremel tool and several different cutters, and a abrasive polishing wheel. that throttle body probably has 6-8 hours worth of grinding and polishing in it. dont use grinding stones the clog up very quick, use carbide burrs, they don't clog unless you spin them too fast.

I'm not done with it yet, but I'm getting pretty close.
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Old 11-19-2009, 04:55 PM   #4
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Car: 91Trans am WS6
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23

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Re: lets see some customized throttle bodies
TB can also be sent to turbocity to be bored, thin trottle shafts installed, rebushing, ...
http://www.chevyhiperformance.com/te.../photo_05.html

I will take a pic of mine and post it these next days.
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Old 11-21-2009, 09:52 AM   #5
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Re: lets see some customized throttle bodies
http://www.thirdgen.org/techboard/tb...?highlight=UFO (UFO in TBI Land)
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Old 11-21-2009, 08:26 PM   #6
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Location: Pensacola Fl
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Car: 85 2M6 Fiero '87 R30
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Axle/Gears: ???, 4.10 14 bolt.

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Re: lets see some customized throttle bodies
Thats awesome, I've never seen anything like that!
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Old 11-28-2009, 11:50 AM   #7
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Location: Pensacola Fl
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Car: 85 2M6 Fiero '87 R30
Engine: L44, 7.4 L
Transmission: TH125c, TH400
Axle/Gears: ???, 4.10 14 bolt.

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Re: lets see some customized throttle bodies


there's got to be more than just these 2(3 if you include the mag)! anyone running a 4bbl? CFI? lets see it
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Old 12-03-2009, 10:56 PM   #8
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Car: 1989 IROC Z28
Engine: 305 TBI (L03)
Transmission: 700R4 w/ Corvette servo
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Re: lets see some customized throttle bodies
Since taking these pics I've modified the regulator to be adjustable. A sockethead screw (not shown) between the two fuel fittings allows for adjustment. If you look closely, you'll also see the shaved throttle shafts in the pic of the fuel fitting reliefs.
Attached Images
File Type: jpg mod2Front01.jpg (128.2 KB, 54 views)
File Type: jpg mod2FuelLineRelief01.jpg (130.3 KB, 60 views)
Last edited by 89IROCZ28; 12-03-2009 at 11:03 PM.
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Old 12-03-2009, 10:56 PM
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Reload this Page lets see some customized throttle bodies
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