HELP! -- Brake Booster Install Question

[ajgriffin]

Originally Posted by mclairmo

Also, not sure if you are still working on these items, but it looks like your detent cable for the trans is not hooked up. This will prevent the trans from kicking down when you floor it. Also, your choke plate is open. It should be closed when the engine is cold. If it stays open, then it may be hard to start when cold.

I sent you a PM on this. Thanks for the heads up...I was wondering what that cable was for.

Originally Posted by mclairmo

Your carb is a Holley 4160 and has a large nipple sticking out of the base plate on the passenger side at the back of the carb, the one spot you did not take a pic of. Looks like your pcv valve is hooked up to it. You can run a T in that pcv hose and then run a hose to the brake booster or buy a 90 degree nipple and place it in the intake at the back of the intake exactly where Rack Man shows it should be. There might be a plug screwed into the intake in that hole and you may have to remove it first.

I'll try the T approach if I don't see a hole where Rack Man says it should be. Thanks for all the help...this forum is AWESOME!

[mclairmo]

Here is a pic of the detent hooked up using the Lokar oem style bracket and cable.

[mclairmo]

Here is a pic of your Holley Street Dominator intake manifold and it shows the same hole in that back intake runner that Rack Man showed. You can bolt a 90 degree nipple into that.

[mclairmo]

Here's the 90 degree I used from Spectre, part number 5946. It is 3/8inch NPT.

[mclairmo]

Or, if you have another small vacuum hose that needs to also be hooked up at that same spot, you can run an oem type intake fitting that looks like this one. It allows you to run a small vacuum hose to that spot and also run your brake booster. You can find them on Ebay for $20. Called an intake vacuum power brake fitting.

[ajgriffin]

Awesome! Thanks for all the help & pics guys! This has been a great help. So I got out there and it looks like the PCV is hooked up to the intake so the vacuum on the carb is open. Is this the right spot? Looks like I just need the check valve and a hose the way I understand it now.

[ajgriffin]

Stops like a Corvette guys thanks! Well more like a big steel truck, but you get the picture!

[mclairmo]

That's the correct nipple to use. Looks like the 12 volt ignition sourced power wire to the electric choke is missing. I see that the choke plate is open now, though.