Its not a vacuum advance problem. But it could very well be the mechanical advance of the distributor. Along that guess (and it is merely a guess) perhaps the springs are not allowing the weights to swing out smoothly.

Before doing distributor swapping, you really need to shoot a timing light at both idle and accelerated positions. Let us know what the idle and total advances are.

And to answer your question: putting a new distributor may help if the problem is the mechanical advance, but you will still have to time it (and I don't know if we've eliminated timing yet as the problem yet). Is there play in the shaft of your existing distributor?

 

What I'm hearing is that the engine bogs and then picks up. That should mean that it's not the mechanical advance, as that only comes in as the revs rise (and initially in this case the revs are doing everything EXCEPT that).

I suppose that it could be a restricted vacuum advance line that isn't letting the vac advance go away quickly enough or something hanging up the mechanism itself. Simple and cheap enough to test for, anyway.


Norm

 

Good point Norm.

 

i will let you know the timing. hopefully i can get it timed today. i've tried to do it myself but i can't. the car has way too much crap up front. its almost like i have to get on the underside and do it but the marks aren't under there. i have to see if a shop can do it

oh and let me know if this is right. the vacuum setup comin g from the distributor is as follows:

the hose nearest to the distributor cap goes into a tree (with three fittings) on the front of the manifold (top post), the middle post goes into a three-way vac fitting that is tied to the second line from the dizzy and runs to the carb. the bottom post runs all the way to the back of the manifold in a vac port. thats my vac line setup for the dizzy. i didn't mess with it as long as i've had the car and the lines don't seem to be plugged.

 

oh and the car makes random pops out the exhaust when in idle.

 

sounds like a problem i was having a while back with my old 67. i out a bottle of tune that tank in it from discount tire and replaced the fuel pump and filters and everything went fine from there. try that. when was the last time you replaced all of that?

 

all fixed. ended up being some messed up vacuum lines (wrong places/hooked up wrong). its been that way ever since we had the car. but holy **** what a difference when **** runs right. thank you for the input and help.

 

What intake is on this 289?
Specifically ! Which 289 is it? There were 4 available A,C,D & Z

Code C was a 195 HP 2v.

Did you put a 4bbl intake on it without 4 bbl heads ?

whoops, I thought I was on the last page when I posted.