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75 0r 78 mm stock tb

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Old 02-24-2009, 06:59 PM
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Default 75 0r 78 mm stock tb
in have a 99 camaro midle modified engine , ls6 intake , hooker lt headers i want to use a bigger tb but i dont know the diameter of my tb stock, if is 75mm can i swap for a 78mm...... it does fit? or just port the 75mm. which is better? pls help me
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Old 02-24-2009, 07:05 PM
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its should be a 78mm if im not mistaken. ls1 ls6 78mm cable driven tb and ls2 ls7 have 90mm electronic tb's
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Old 02-24-2009, 09:39 PM
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my 99ss had a 75mm stock....
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Old 02-26-2009, 12:53 PM
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The stock throttle body is 75mm, but often called a 78mm which is incorrect.
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Old 02-26-2009, 01:21 PM
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what about the 80mm or 85mm?
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