Carbed Vacuum
02-24-2010, 02:34 PM
#1
Teching In
Thread Starter
Join Date: Jan 2010
Location: Saint Peters, MO
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
Carbed Vacuum Hey guys,
I have gotten the Edelbrock Intake with MSD controller Kit for my 5.3L.
The carb that I want to put on there is a Edelbrock carb. Either the one I have (1406) or possible a larger one.
My question is, what vacuum line are you connecting to your carb?
On 1st gen SBCs you connected the 3 ports on the front of carb from left to right,
#1 was timed vacuum (Distrib vacuum advanced emissions)
#2 center was PCV port
#3 was time vacuum (Distrib vacuum advanced non-emissions)
So, now on the LSx model engines is there a PCV port?
and since we don't have distributors now what do we hook the other ports up to?
I have gotten the Edelbrock Intake with MSD controller Kit for my 5.3L.
The carb that I want to put on there is a Edelbrock carb. Either the one I have (1406) or possible a larger one.
My question is, what vacuum line are you connecting to your carb?
On 1st gen SBCs you connected the 3 ports on the front of carb from left to right,
#1 was timed vacuum (Distrib vacuum advanced emissions)
#2 center was PCV port
#3 was time vacuum (Distrib vacuum advanced non-emissions)
So, now on the LSx model engines is there a PCV port?
and since we don't have distributors now what do we hook the other ports up to?
02-24-2010, 04:25 PM
#2
I ran a PCV set up on mine. Usually a good idea.
I also ran an unported vac line to a MAP sensor feeding the ignition box. That allows you to add vacuum advance, also generally considered a good idea.
One of your ports should have vacuum all the time. That is the one you want to use to feed the ignition box MAP sensor.
I also ran an unported vac line to a MAP sensor feeding the ignition box. That allows you to add vacuum advance, also generally considered a good idea.
One of your ports should have vacuum all the time. That is the one you want to use to feed the ignition box MAP sensor.