There were big block 400's that came with a lock-up converter at the
end, probably hard to find now. mike becker
----- Original Message -----
Sent: Thursday, December 14, 2006
3:40 PM
Subject: Re: IML: overdrive
torqueflite and stall speed
David, Thanks for the exchange, the lock-up converter was never
offered for a B727 (Big block), as the big block ended in 78,(cars) there
were some after that, for truck, and motor-home applications, but no
lock-ups were used. The only way to get there is the 518, with
modifications to fit a big block.
Its true, you would have to drive a lot to see the pay-back.One thing
that could be done, if your looking for ALL small improvements, if your in
the trans. for any reason see if a lower stall speed converter can be had.
That could be worth 5-10% ,at high-way speeds, especially if
you have one thats 25 plus years old.I think the thoughts, the
concerns, and the wishes, are great, but the fact is you have to accept
the basic laws of physics, realize the limitations and ENJOY the
moment!Ya'll have a nice day, Dave.
--------------
Original message --------------
From: David Whitney
<hazegreen66@xxxxxxxxx>
Thanks for the clarification. Yes, it is the converter that
slips and not the trans. That's what converters do by design,
making automatic transmissions possible.
My point was not to recommend adding a lock-up converter to an
older 727. It was to recommend using the late model 727s for which
a lock-up converter is available (78 and up, but memory may be
failing me) if you are going to do the GV thing or a tranny that
comes with a lock-up converter if you are going to do the 518
thing. As previously noted, no way are you going to be able to do
this without some aftermarket parts and you will probably have to do
some chassis modification in addition to shortening the drive
shaft.
Considering the gas savings vs. the expense, over 6 or so years
you'll recoup your money if you drive the bejesus out of your
Imperial. For a Sunday driver, there is no recouping and the
satisfaction is in having it and showing it
off.
Happy motoring,
David
'91
K-Imperial driver
'66 LeBaron dual air and every option known to man
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