Who is happy with their TKO600 with 0.64 O/D?

[Jim Vander Wal]

In a previous car I had the TKO-600 with the .64 OD and a 3.27 gear. Only time I didn't like it was 50-70mph back road cruising in 5th so I just drove faster or ran in 4th. New build will be same motor and trans and 3.31s.
Jim

[Kit Coyle]

I have a BOSS 302 with ~400hp, 3:31 rear and a TKO with .63 5th.
The TKO 1st is 2.95 vs 2.87 in the TKO 600 so the 3:31 rear keeps the 1st
gear from being too short. The engine revs to 7000rpm+ so I mostly only
use the first 3 gears at high speed on country roads. 4th gear is mostly for
the occasional freeway use and 5th only for long distance at high speed on
the freeway. Basically it is a 4 speed with an overdrive gear. I bought the
car from the first owner in San Diego and drove home to San Francisco... so
my first drive was 7 hours on I-5 at 80 mph! The .63 5th was great...a nice
quiet drive at ~2200rpm. I'd love to try a .82 5th as it would be a better
sequential gear [less rpm drop from 4th to 5th] but it would still only be a
freeway gear and I wouldn't use it much.

[blykins]

With a cam that has any amount of overlap whatsoever, .82 is the only way to go, unless you want to play the bucking game.

I have sold probably 2 .64 TKOs since I've been in business. I have no use for them, or a Magnum T56 for that matter.