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

Size of 454 tbi

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Old Aug 22, 2012 | 04:28 PM
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camaroboy199290's Avatar
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From: blairsville Ga
Car: 89 iroc
Engine: 355tpi
Transmission: jasper 700r4
Axle/Gears: 4.11 lsd
Size of 454 tbi

Well I'm working with a 454 with tbi. I was wondering if there is a difference between the size of the venturies of a 305 or 350 tbi and the 454 tbi. And how much bigger r the injectors.
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Old Aug 23, 2012 | 11:44 AM
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Ronny's Avatar
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From: wisconsin
Re: Size of 454 tbi

1+11/16 vs 2.0 inch.

305 had approx 40's 350 had approx 55 + 65 +66/68 vette. 7.4 had 3 differing sizes of injectors. See a recent thread on injectors! It is all there.
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