carb idle gassy

[canadian nascar]

Hey Guys

I am trying to get rid of gassy idle, I was on Cliff hi performance and Cliff thinks my cam is the culprit,
I have a 301t with a comp 262h cam, the LSA is suppose to be to tight and won't work well in a small cube engine. Others on 301garage say it will create too much cylinder pressure also. I was hoping that the cam is fine but I was looking for other experience to help me.
What cam would be a good choice?

I have a a/f gauge that I am adjusting to,
I have a 262 comp cam
stock hei with accel coil
made the carb specs to Cliff's recipe #2, Cliff suggested this
-14 vacuum in park
timing dist is locked right now at 18* with 25* vac adv.
I have gone though the lines numerous times looking for vacuum leaks

I the car idles but higher rpm, 800 in gear to keep it running, sometimes feathering the throttle, if I put the a/f to 15-1 it will be hard to start and puff fuel out the exhaust when it does start. Really gassy
To make the car not puff smoke I lean it out to 17-1 a/f, it starts better and no puffs of smoke, same rpm as above, still gassy

I bumped the adj vacuum adv just before I but it away to 25* and it made my vacuum increase, I thought this is a good thing and would like to give it some more vacuum adv. but I was told that is not right.

it will not run without vacuum adv.

BTW I did get it the do 0-60 in 5.2 sec last fall, 18* timing and 15lbs of boost

thank Kevin

 

[charlief1]

Let's deal with the idle first Kevin, one step at a time. How many turns out are the mixture screws?

 

[canadian nascar]

Hi Charlie,

The car is still in storage, it will be a couple weeks before I can get it out, I was trying to get a ideas how to fix this once and for all. So you don't think the cam is that bad?

thanks Kevin

 

[charlief1]

It may be a cam but I want to go through the basics to make sure it's not something else Kevin.

 

[canadian nascar]

hey Guys,

car is out and looking at the carb the right side " nozzle " i think it is called is dripping fuel, the little tips inside the circle casting primary side. but the left side isn't, touch the throttle and both side squirt.
the fuel screws are out 2.5 each,
the a/f is 16-1
float height is 5/16
110 gph holley pump 6.5-8 psi
idle 900 rpm a little rough

later Kevin

 

[charlief1]

2.5 turns isn't enough Kevin. 1 to 1.5 more turns out (3.5-4) then you should back the back the speed screw out some as well

 

[canadian nascar]

hey guys,

changed the float level to 15/32 as spec says, and 301garage forum, seems to have more vacuum and I turned out the mixture screws 3.5
a/f is 15.5 idle
vacuum 16
rpm needs to be lowered from 1100 to 800
no nozzle drip now
not puffing fuel and as much gassy stink at idle
running better

later Kevin

 

[charlief1]

HOOAH Kevin.