Disc Conversion Parts

[twostick]

Is your car column or console shift?

Console shift you can get away with the later style booster if it doesn't have to be "correct".

Kevin

 

[BoatMan]

Is your car column or console shift?

Console shift you can get away with the later style booster if it doesn't have to be "correct".

Kevin

Column...

 

[BoatMan]

Ok guys I got a Booster- found at that Columbus swap meet last weekend.

Next question- my car is manual drum currently. Talk to me about the vacuum side of things. where does the vacuum hose connect, etc

 

[MrMoparCHP]

Top of the intake manifold, if you have AC or a vacuum gauge you may already have fitting there but will need to be changed.

Alan

 

[Ripinator]

Ok guys I got a Booster- found at that Columbus swap meet last weekend.

Next question- my car is manual drum currently. Talk to me about the vacuum side of things. where does the vacuum hose connect, etc

One other thing you MAY have to address: You might need a power-brake brake pedal. I think the pivot points are different between manual and power brake pedals; therefore you won't get the correct leverage when pressing your manual-brake brake pedal. Some of the others here may be able to address this issue better than me. . .

 

[MrMoparCHP]

Looking at the 66 parts book it appears that both the pedal and the bracket are different.


Alan

 

[BoatMan]

One other thing you MAY have to address: You might need a power-brake brake pedal. I think the pivot points are different between manual and power brake pedals; therefore you won't get the correct leverage when pressing your manual-brake brake pedal. Some of the others here may be able to address this issue better than me. . .

I got the power brake petal from another 66 ready to go- along with the firewall bracket.

 

[Ripinator]

I got the power brake petal from another 66 ready to go- along with the firewall bracket.

Mighty fine!

 

[Snotty]

1- is a single diaphragm going to do the job. I am only doing front disc.
View attachment 151705

I kept mine, works fine.

 

[BoatMan]

Top of the intake manifold, if you have AC or a vacuum gauge you may already have fitting there but will need to be changed.

View attachment 152918


Alan

So looking at this image- I already have something attached there. See attached. It goes into my firewall. Can I hook the new hose and this one into that spot with a new bolt?

 

[MrMoparCHP]

That line is either for the AC or a vacuum gauge.

Depending on the size of the existing vacuum line. (probably the first one)
Mopar Power Brake Vacuum Fitting Port Intake Manifold AC Air Grabber GTX Cuda | eBay
Mopar 68 69 Power Brake Vacuum Fitting Port Intake Manifold Hemi GTX SuperBee | eBay


Alan

 

[Mike66Chryslers]

The small vacuum hose pictured goes to your HVAC controls to run the vacuum dashpots on your heaterbox. On your intake manifold you need to swap out the fitting with the single small opening for one with a huge opening and the small one off to one side. OR if you have an aftermarket carb, many have a pipe plug in the base which can be removed to install a vacuum fitting suitable for power brakes.

BTW, I would also be interested in finding a dual diaphragm booster if anyone has one. I'm currently running a 1973-style large diameter single diaphragm booster with my discs. I have a console shift so no problem with linkage, but I can't install any aftermarket valvecovers because they hit the booster.

 

[BoatMan]

You might be able to find one at Carlisle or Mopar nats... Mine sat on a shelf for a few years in NY. Found it on this forum.

 

[BoatMan]

That line is either for the AC or a vacuum gauge.

Depending on the size of the existing vacuum line. (probably the first one)
Mopar Power Brake Vacuum Fitting Port Intake Manifold AC Air Grabber GTX Cuda | eBay
Mopar 68 69 Power Brake Vacuum Fitting Port Intake Manifold Hemi GTX SuperBee | eBay


Alan

Any idea about what size vacuum line? Any brand I should look for?

 

[BoatMan]

Also- I am going to have to replace that smaller hose (or at least splice in a new end piece)

Top of the intake manifold, if you have AC or a vacuum gauge you may already have fitting there but will need to be changed.

View attachment 152918


Alan

Is this fitting correct?
Power Brake Vacuum Hose Fitting

 

[Mike66Chryslers]

Yes that is the fitting you want.

 

[Davea Lux]

Any idea about what size vacuum line? Any brand I should look for?

Factory vac hose is 11/32". Be sure that you use vacuum rated hose, fuel line and transmission cooler line hose will not work for long. Mancini Racing has the correct hose in pre-cut lengths. At around $15 it is a bit pricey. Probably can find a compatible hose cheaper at a truck repair shop.

Dave