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Discussion Starter #1
Do any of you know what's the best way to get this carb to work well. My symptoms are as follows: When I first put it in the car it started right up and idled well. but upon load, 1st gear acceleration. It appeared to load up and stumble badly. It was undrivable. So, I move the accel pump to a lesser setting and again to the least setting. that helped a lot but the condition did not go away completely. So I still have a little stumble which requires more rpm at clutch out than I'd like and it surges a bit upon acceleration. ANY IDEAS! NONE OF MY FRIENDS NO JACK ABOUT EDLEBROCKS
 

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Read the Edelbrock manual and get a set or two of metering rods that will lean out your mixture a bit. Most of the problems I have had with Edel. carbs have been from an over rich condition. 750 cfm carb out of the box may be too rich for your combo. Metering rods take only 5 minutes to change out so is easy to do.
 

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Discussion Starter #6
well I put on My 750 dble pumper and it runs better. Seems odd though. Here's a weird thing. The tach,autometer) was bouncing all around and when i switched carbs, it stopped and works fine now
 

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The carb tuning kit is $50.00 from edelbrock, it would probably help a little but I wouldn't invest any more money into the edelbrock, keep your holley, buy the correct power valve and tune it right and you shouldn't have any more of those symptoms, assuming your timing is correct.

Was the tach bouncing a few hundred rpm's and was the motor affected (also oscillating) or did the needle flick violently every now and then to high rpm's?
If it flicked violently, a few autometer's I have run across do that, for the price, they shouldn't, but in reality they are really the only decent gauge maker around so we are pretty much forced to deal with their outrageous prices and okay readings...
 

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Adjusting the idle mixture screws wouldn't do much, hence "idle mixture"
Adjust them with a vac gauge if you still want to mess with the edelbrock, even then, it won't make a difference, except maybe pick up a few inches of vac.
 

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Adjusting the idle mixture screws wouldn't do much, hence "idle mixture"
Adjust them with a vac gauge if you still want to mess with the edelbrock, even then, it won't make a difference, except maybe pick up a few inches of vac.
I didn't ask if adjusting them helped or not. I asked what they were set at?
 

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Discussion Starter #11
I did set them to highest press which was also highest rpm. I Have to agree with Ace68. I think the edelbrocks are a p.o.s. compared to a holley. It was a new carb. I don't recall how many turns out they were. The idle was /is fine with either carb, it's the stumble I can't deal with.
 
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