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DDDD DDDD is offline
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Join Date: Jan 2007
Posts: 1,077
Originally posted by VZ935
Both 934's and 935's had up right turbo 4speed boxes.. the later 935's had flipped boxes and many of the earlier 935s had the flipped box modification done later for better axle geometry..935's used a ti axle with a rubber guibo coupling in the center of the axle and 934's used the standard axle like the road cars.. as a matter of fact 934's had to resemble the road cars down to the electric windows and cig lighter... that is why they had water intercoolers... like a 76/77 turbo no room for an air to air cooler under that stock deck lid.

my street turbo was geared for 145 MPH.. to me that was plenty . Car was much more responsive. Could probably keep your stock first and change the top three gears. 915 box could be risky even with a stock turbo motor.. it's the Tq when that sucker gets on boost.
This is EXACTLY what was done to my tranny. I have a final drive ratio of 5:1, I believe, and the top speed in 4th gear is around 145 m.p.h. With 400 HP, the acceleration is simply amazing. At 60 mph in 3rd gear, you go straight to red line and hit 110 mph in maybe 3 seconds, at the most. At 70 mph, in fourth gear you can hit 120 mph in perhaps 4 seconds. I cut my boost back because I was spinning my tires in fourth gear.

Totally awesome. I wouldn't change my gearing for anything else, but then again, I am not using the car at the track. If I did, I would find a track with a 145 mph top speed!
Old 01-24-2007, 04:11 PM
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