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70 or 75 Throttle body?

  • BBK 70mm

    Votes: 0 0.0%
  • BBK 75mm

    Votes: 3 27.3%
  • Accufab 70mm

    Votes: 2 18.2%
  • Accufab 75mm

    Votes: 6 54.5%

  • Total voters
    11
1 - 3 of 3 Posts

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Discussion Starter #1
347, FTI AFR 185s, FTI or HiTech cam, Performer RPM, BBK 1 3/4 long tubes, 70 mm Mass Air(Cobra Conversion, I know, get rid of it).
 

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I went from 70mm BBK to a 75 mm Accufab and couldn't tell any different except I didn't have that strange whistling sound any more. Also the Accufab is much prettier. ;)
 

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665 Posts
A 75 mm TB is what you need for best top end power. However, you need an 80mm mass air to realize any gain from it.

Steve A.
 
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