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LS5

different 700R4's ?

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Ok Guys, time to help the simpleton out here.... I have seen plenty of 700r4's with the ability to thread in a switch into a port on the passenger side of the tranny and running the wire over the housing and connect to the 4 pin plug on the drivers side for the lock up.

The Tranny I have is a 1992 700r4 and has NO port on the passenger side at all. I am assuming because it is a newer 700r4 this is different ? it has the threaded speedo cable gear already which is lucky for me and also the 4 pin plug is on the driver side with enough wires for pigtales.

my question I guess is How do I hook up this lock up or is this newer 700r4 with a 4th gear different. I would prefer not to have a switch I have to keep turning on and off. I have heard there is a way to hook it up to your brake pedal and it does it all for you with no switch ? PS my car does not have AC or Cruise.. I plan on installing this in the monte for better gas milage over long distances.

Thanks Darren

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If it doesn't have the port to the left of the servo you may just need to drill and tap it yourself if the case has the boss.

As an alternate, you could drill and tap the servo cover. 

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Darren, there used to a 700r4 harness available at Summit racing. There is a pressure port on the drivers side of the transmission. Having a threaded Speedo cable sounds like an older trans or maybe someone changed the trail housing.

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2 hours ago, monte70car said:

Darren, there used to a 700r4 harness available at Summit racing. There is a pressure port on the drivers side of the transmission. Having a threaded Speedo cable sounds like an older trans or maybe someone changed the trail housing.

Hi Ert, yes the Housing was changed on the rear as it was in a 1959 Impala before and he had a speedo in that. The previous owner said it was hooked up and didnt use a dash switch but worked great. how it was hooked up he doesnt know but thinks it had to do with the brakes ?

doing lots of searching on this to make sure its done right.

Thanks Guys for the input

Darren

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He probably used a brake switch that has two sets of contacts. One for the brake lights and the other would go to the tcc.

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