Tranny Stuff - Was Re: 200mph speedo wanted

[alex@ravenet.com (Alex C. Green)]

Greetings list members.

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> From: dig@rrnet.com
> To: GMC Motor Sports List <syty@syty.org>
> Subject: Re: 200mph speedo wanted
> Date: Sunday, August 31, 1997 5:25 PM
> 
> 
> > Hello Alex, hello list members,
> > 
> > why it is unbelievablt to drive this speed ?
> > Months ago a wrote down what seemed my Ty is going...
> > We checked it with an BMW M3 at the german autobahn and the gauge was
> > reading nearly 242 km/h (~152 mph) with 4850 RPM. My mods are written
> > down in the member list (modified boost control, other chip made by
> > Digit Power in Switzerland). I have a track test (sorry only in
german),
> > there they tested 235 with 26 degrees cels. outside. I drove my speed
in
> > spring time with 15 deg. outside temp.
> > 
> > Alex, what mods. have you made with your tranny ? Your RPM's are really
> > low !
> 
> I don't think he was running the 3700 RPM numbers at 146, should have
> been 4755 by my math.

Once again - you are correct Dig.  I was running somewhere between 47K-48K
or so.  It was a bit under 5K.  And due to the excellent accuracy (NOT!) of
our gauges, it was sorta hard to tell a more precise number.  

> 
> FYI, the figure GMC gave (in their press release) for calculating
> top speed in 4th gear is 30.7 MPH/1000 RPM. In order to hit the
> "magic" 200 number, you'll need to be turning just over 6500 RPM.
> (and making a holotta HP)

Will this formula/computation be affected by the installation of a tranny
shift governor?  I don't have one in mine, but was contemplating it.  Does
anyone use one?  Good?  Bad?  No difference?

> 
> Dig
> Dig@rrnet.com

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Alex C. Green
1992 GMC Typhoon #1153 (Green/Gray) - 12.67 @ 112.7mph
1997 Subaru Legacy GT (Red)
1992 Kawasaki Ninja ZX-11 (Black)
Hockessin, Delaware
E-Mail: alex@ravenet.com
ISTA Mid-Atlantic Chapter Member
"Reality is for people who lack imagination"
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