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Old 08-10-2017, 04:10 PM
Kit Coyle Kit Coyle is offline
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Join Date: Aug 2014
Location: Mill Valley, CA
Cobra Make, Engine: ERA FIA #2064 BOSS 302 CSX2047 sold
Posts: 179
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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.
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