Keith Edwards wrote:
>Yes, there was an optional 4.3 rear axle ratio available from Triumph
>for "speed" use. I have that ratio in my former SCCA E/P TR3B. There
>was another numerically higher ratio, as well. 4.55 perhaps.
Hi Keith,
You're right - there was a 4.55 rear as well; that's what used to
be in my TR-4 autocross car. I've also seen 4.88 and 5.13 rears for
Triumphs, but they may have been out of a truck rear end or something.
>I really like the 4.3 ratio for autocross.
The 4.55 really launches well, but you do have to do a fair bit of
shifting to use it well. That said, I liked it well enough to go
to a 4.62 with my new rear end (not a stock Triumph part... <grin>)
cheers,
John Lye
'59 TR-3A, '62 TR-4, '70 GT-6+
email: rjl6n@virginia.edu
homepage: http://avery.med.virginia.edu/~rjl6n/homepage.htm
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