It should be mentioned that some groups don't allow a 5-speed (e.g.
CVAR). The jump from 2nd to 3rd is one reason I switched from a 3.7
close ratio to a 4.55 close ratio with overdrive. With the later setup
3rd replaces 2nd, 4th replace 3rd and 4th-OD replaces 4th. The jumps in
the top three gears are about 20 percent. It seems that with most of
the tracks I ran on, I needed 2 gears for most of the track with perhaps
a higher gear needed on the longest straight or a lower gear in the
tightest corner. I remember one time when I lost a throw out bearing at
Hallett. I lost only about a second using just 3rd and 3rd OD. I know
an overdrive is "old school", but you get some good ratios and the
satisfaction of knowing you a truly vintage. I seldom had trouble with mine.
- Larry
On 12/23/2014 9:19 AM, Robert M. Lang wrote:
> Hi,
>
> Last point for now, then I'll shut up. If you look at the list of T5
> ID numbers here:
>
> http://www.britishv8.org/articles/borg-warner-t5-id-tags.htm
>
> you'll see that there are lots of different ratios out there. If you
> limit to reasonable choices you'll see that the jump from 2nd to third
> is pretty large, hence my suggestion that they aren't ideal for
> racing. But you can limit your choices another way - stay away from
> the O/D 5th that's more than about .8 (for example, the .63 ratio 5th
> for the 84 Mustang / Capri V8 is totally unsuitable for a Triumph)
>
> Again, just IMHO.
>
> Regards,
> rml
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