smallblock ford dist. advance hoses

so i have a 351W and the dizzy has 2 vacuum hoses coming out of it. one goes straight out, the other goes 90*

which one goes to what type of vacuum?

im hooking it up to an edelbrock 1406 carb.

thanks

Joe

 

Typically, the straight-out one (on the end of the vacuum canister) goes to ported vacuum (above the throttle plates), while the 90* one goes to manifold vacuum.

Having said that, I've seen a couple variations...try it.

 

thank you sir!

Joe

 

Ernie's da MAN on the Ford stuff...he's right...again!

(The distributors with the two vacuum lines are 70s era smog items...best to replace 'em!)

Although, I have seen many guys plug one and just run either the ported side or the manifold side, as per their preffered method of tuning...but I always liked to run the older single point Ford distributors with the vacuum advance run to MANIFOLD vacuum, ala GM style. It provides better part-throttle and cruise driveability, along with a smoother idle.