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Rob 930 Rob 930 is offline
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Join Date: Dec 2002
Location: Seattle
Posts: 659
I had a 915 for a while but when I went for a big horsepower engine, I chose to go with an "active 4 speed" 930 gearbox for my 78 930 track car. I went with a very tall 1st gear (engine revs out at 72 mph), a stock 2nd, and a shorter 3rd and 4th (revs out at about 162 mph). It's not for everyone, and is obviously a bit sluggish from a dead stop, but it's heaven on the track. The ratios are

1st (1.736) taller
2nd (1.303) stock
3rd (1.0) shorter
4th (.767) shorter
R&P 9:38 (4.222) stock (with Guard LSD)

I posted this video of the car on the track a few weeks ago, but thought I'd link it again, because it shows how the car sounds and performs with these gears. You can watch the gauges if you put it in full screen mode.

PCA2 on Vimeo

Rob
Old 03-10-2010, 04:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #27 (permalink)