Throttle body ???

Fri Apr 10, 2009 5:00 am

What are these ports for/ what do they go to. I am doing the 2.7 liter stroker and i have no idea what these are for

Fri Apr 10, 2009 11:44 am

For the hoses that go to the brake master cylinder, for vaccuum assistance!

Fri Apr 10, 2009 3:25 pm

so can i just cap them off? my m/c only has 1 large vacuum hose.

Wed Apr 15, 2009 3:52 pm

No! Those two ports should be connected to two hoses that lead to a non return valve which in turn connects to the single hose that goes to the master cylinder servo.

I'm sure someone here will have one lying around or you could try a breakers yard, and a good idea is to use a bit of sealing compound where the elbows go into the throttle body as they get a bit loose and could introduce an air leak.

I've a feeling that earlier cars may only have had one hose from the throttle body - Can anyone confirm this/correct me?!