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07 nnbs throttle body size

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Old 12-16-2007, 02:38 AM
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Default 07 nnbs throttle body size
does any body know the stock size throttle body 4 the new vmax. i heard it was 87mm. if so can we run the holley 90mm
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Old 12-16-2007, 08:38 AM
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Yes the stock size is 87MM confirmed. I don't know about the holley 90MM though.
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Old 12-16-2007, 02:17 PM
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i wonder if the blade is the same or is it just ported 2 make the 90 mm
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Old 12-16-2007, 06:19 PM
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Originally Posted by L33Z71
Yes the stock size is 87MM confirmed. I don't know about the holley 90MM though.
what size is on the 5.3 flex?

I looked at mine and its huge compared to my old 2000 5.3...what size were they?
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Old 12-16-2007, 10:34 PM
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78mm was the old size I think.
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Old 12-16-2007, 10:34 PM
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To answer the question though yes the holley one will work but whats the point? Just get the stock one ported.
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Old 12-17-2007, 08:55 AM
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Yeah, the classics were like 75 or 78 MM opening. The new ones are 87MM on the 4.8's and 5.3's for sure. I'm not positive on the 6.0's and I believe that the 6.2's are 90MM.
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Old 02-16-2008, 10:50 PM
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my 2500hd has a 90mm stock
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