TTA Brakes

[1987 GN]

Ok, you may have seen my questions under the general TB Tech area about what the problems are with the Powermaster brakes. I have heard about converting to vacuum but this supposedly causes problems in that you have no brakes while under boost or with a real lumpy idle you have none either. What is the braking system on the TTA? I have heard how good it is and I wondered how it works and if it is adaptable to my GN? Any help you may provide is appreciated. Thanks.

 

[TTA89]

Its just the standard 1LE Vacumn brakes that came on the 1LE V8 Cars. I havent had any problems with mine. I always go full boost and then jump on the brakes...

 

[2QUIK6]

You can do the conversion fairly easily. Can get the parts from a donor V8 Regal, Cutlas, or Monte Carlo. Need the booster, mastercylinder, and the brake pedal assembly. There's a tech article on how to do this on the gnttype.org site. I've also seen ads in Hot Rod mag I think that sell brake conversions, and the GN/TR is one of them, but probably very expensive. Lots cheaper to find the pedal and booster in a junk yard and then buy a new mastercylinder for $30. Make sure you have a oneway check valve on the vac line.