Question: 1968, 427CI, 435 HP, 3X2 CARBURETORS

[Newt]

I'm working on my 3X2 carbs and think I'm getting closer to having them right.

I know that the outboards start kicking in at about 3500 rpms. However,
which one kicks in first --- the front ? or the back ?

I've been told that they both come in at the same time, but it seems that
in the past when I hammered it that one came in at about 3500 rpm and
the other at about 4500 rpm, but it's been a few years since they were
functioning properly.

Can anyone tell me if both at once or if they are staggered ?

Thanks,

Newt

 

[Hib Halverson]

The end carbs should "come in" at the same time.

If they're not, you've got a problem somewhere. Each end carb has it's own vacuum acturator so I'd be checking both of them for proper operation. Check for a vacuum leak in the hoese going to the diaphragms. Also, you might look for a throttle shaft that's binding.

 

[Newt]

I'm working on my 3X2 carbs and think I'm getting closer to having them right.

I know that the outboards start kicking in at about 3500 rpms. However,
which one kicks in first --- the front ? or the back ?

I've been told that they both come in at the same time, but it seems that
in the past when I hammered it that one came in at about 3500 rpm and
the other at about 4500 rpm, but it's been a few years since they were
functioning properly.

Can anyone tell me if both at once or if they are staggered ?

Thanks,

Newt

Hib,
Thanks for your quick reply.

Also, I've read some of your material.
You do a good job.

Newt

 

[Crimson Thunder]

Check the springs in your accuators,you might have 1 soft spring and 1 hard spring making them open at different times.