Not sure that the folks at edelbrock have a clue as to what they are talking about. ANyone here got any expereince with them? If ya have some time please pm me.
Thanks

Not sure that the folks at edelbrock have a clue as to what they are talking about. ANyone here got any expereince with them? If ya have some time please pm me.
Thanks

Hit me up, as I should be able to help you out. What division are you refering to?

My "problem" as such seems to be that the info they are feeding me is not working. We seem to be grasping at straws and doing just trial and error. Starting to get time consuming and we are not getting anywhere.
Here is where I'm at right now.
This is a model 1405. It was on a chevy 305 stock motor. Had lot's of trouble getting it tuned in on that motor as I run elevations from around 3000ft to 8000ft daily. Finally got it running good with .095 jets in the front, .089 in the rear and .073X.052 metering rods.
Now it's on a new 350, edelbrock performer intake, headers and dual exhaust and runs like &**&)*)(
Edelbrock has not been able to get it right. They have made several sugestions, some of which improved it a bit and some that were in the toilet.
Currently they have me trying .098 front, .095 rear and the .073X.052 rods.
And playing with the step up springs.
Currently when I'm at the lower elevations it runs pretty rough, low RPM, cruising speeds under 45mph it keeps "cutting out" when I run the RPM's up it runs a little better. Pulling the hill and higher elevations it does the same thing unless I down shift and run the RPM's up again. In the mornings on start up and running the RPM's up a bit it is doing a little light back firing.
Any thoughts and suggestons are REALLY appreciated.
The timing is on and the idle mixture screws are set according to specs.
Thanks

It's hard to say what the specific problem may be. I would start with the basics, make sure the float level is properly adjusted, your low end problem seem to indicate a possible "loading up" condition.
Mixture screws aren't adjusted by "bottoming them out and screwing them out 1 and a 1/2 turns." You need to use a vacuum gauge to do the job properly.
Large changes in altitude can require a change in ignition timing. You'll need to advance your timing when the altitude gets higher.
My old Plymouth 'cuda which I had tuned at sea level wouldn't start when I drove it to Sandia Peak in New Mexico. I had to give the distributor an eighth of a turn up to get the engine to run.

Those jet sizes sound real fat to me....


I gave up on the Edelbricks and went to Holley. I never looked back.







I have 6 Edelbricks of various CFM sitting on the garage floor if you need parts or a whole unit.

No offense, but 1, it's not edelbrock's responsibilty to tune your carb. And 2, it's a carb...if you don't want to have to change anything while making a 5000ft change in elevation, go efi. Carbs suck, there's a reason oem's don't use them anymore.

x2