seads

As a newbie in transmissions, what does lockup and non-lockup mean
when referring to a stall converter. If a non-lockup converter is put
on a lockup tranny (or vice-versa) what would the affects be, if any??

Any help on this is greatly appreciated!

Thanks!

snoman

A locking converter in a non locking tranny will not lock up. A non
locking conveter kinda locks up hydraulically after you pass stall
speed but it will still have a 5 to 7% slippage factor and waste a bit
of fuel. Which 86 tranny are we talking about?
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TheSnoMan.com

elbert

A lockup converter as I understand it....when it locks up it basically
turns 1 to 1 with the engine. Thus reducing heat and slippage = fuel
economy to some degree.

A non-lockup converter.... never locks up or matches the engine rpm
directly so in essence it always slips to some degree (old school
converters on turbo 350 and 400 trans) were non-lockup type.


Most all new torque converts are the locking type.

I'm not sure what the effects would be if you put a non locking
converter on a transmission that supposed to have a locking converter.
I don't think much would happen on he 700 series GM transmissions. I
do expect you would have problems on newer cars / trucks where the PCM
/ ECM controls the transmission.

Seems like the fluid would be "hotter"....


Just my opinion... I'm no transmission guy.

I'd be very careful about stall converters and proper selection
to match your vehicle / operational purpose. Stall converters can
really put out a lot of heat.

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Elbert
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