Unless you do a lot
of driving, it is difficult to recoup those kinds of costs - unless you get parts and labor for free
. Do the math to determine your break-even point; you'll likely discover you can drive for many many miles for a fraction of what such a conversion would cost.
Again, if you have the skills, tranny and the time, it makes find sense - if you enjoy that sort of thing.4
Example calculation (all numbers are guesses; I have no idea what they actually would be):
mileage w/ old tranny (C6 ?): 11
mileage w/ new tranny (lockup + overdrive): 13
@$4/gal gas, cost per mile for fuel goes from $0.36/mile to
$0.31. Assume job costs $1000; mileage for payback is
1000/(.36 - .31) = 20,000 miles. If you drive a lot, it might
be worth it.
Your likely fuel savings are not this large, and your costs are likely
to be quite a bit higher.