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diff. between throttle bodies?

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Old 06-08-2006, 09:34 PM
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Car: 88 GTA
Engine: 305
Transmission: Manual
diff. between throttle bodies?

I was just browsing through some sites and noticed that BBK and Holley throttle bodies are year specific; 85-88 and 89-92. What exactly was the difference between the throttle bodies on these years?
Old 06-08-2006, 09:37 PM
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Car: 87 & 89 Iroc's
Engine: 5.0 - 5.7
Transmission: 700R's
Axle/Gears: 2.77 - 3.70
Throttle cable hookup.
Old 06-08-2006, 09:47 PM
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Car: 1990 Pontiac Trans Am
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Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
The IAC passages thru them are different too.
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