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Brandon H. 04-24-2013 12:12 PM

Need help adjusting carb, idles high in part and too low in gear
I need help adjusting the edelbrock carb on my s10,it idles kinda high, around 1300-1400, and when in gear can drop low, to the point of stalling some times. I do not know anything about adjusting Edelbrock carbs other then the idle metering. And I haven't even checked the timing yet. I already have advice from another member on the timing, and will check it Saturday..

Where should I start? It runs strong, its just a high idle and gets too low once in gear. I couldn't find any vacuum leaks.

A little info on the 350 below

Brandon H. 04-24-2013 12:15 PM

It's got a 355 with flat tops, mild worked 882 heads, solid flat tappet cam (cam card below), victor jr 4+4, edelbrock 750, long tube headers, 3800 stall, stock TH350, 10 bolt rear with 3.73 and Lincoln locker. 28.5/10.5 slicks.

(yes I know this motor needs heads and a lot more compression)

Was told it has to be tuned different if the motor has a lot of duration.

Brandon H. 04-24-2013 04:57 PM

Sounds good, I will check that Saturday as well. Thank you for the help, that way I know what I'm after when I work on it Saturday.

I am a little confused on the power setup spring though.

I'm going to keep an look out for a Holley. looking at a 750 vac sec, but if I find a good deal on a double pumper would that work too? It won't be on the street except to go to the gas station

Brandon H. 04-25-2013 11:56 AM

I was told if I lock out the distributor I will have to run a toggle switch in between the power wire on the coil, and when I start it I turn the motor over then flip the switch to apply power to the coil or it will kick back.

I use to race Dirtbikes I know how bad kickback hurts. I keeping and eye out for heads, a new rear end hearer lower and a carb, might be a few months though.

Would this switch be needed? I love the cam in this truck, it's well worth the extra hassle.

33Willys77 04-25-2013 04:09 PM

With that much duration, you may not have any kickback. Try it first and see what happens.

Brandon H. 04-25-2013 06:45 PM

It doesn't have the brace, I will order one online (hopefully flea bay)

can I unhook the vaccum advanced or do I need an adapter to hold the bar inside the dristributor in a certain spot?

They don't make plates to lock the distributor on a hie do they? I can't find one. Can I take a thick feeler gauge, mark it, drill it, and use the original e clips to hold it on.

I'm researching this as much as I can, even ran into this :-)

Thanks for the help answering my noobie questions

66GMC 04-25-2013 08:56 PM

Crane Cams #99600-1 Adjustable Vacuum Advance Kit is what I think you need.

I have one here, and the limiter plate is included in the kit as per the above picture. It looks like Summit also sells JUST the limiter plate ... #99619-1

Brandon H. 04-26-2013 01:51 PM

I made a plate to lock it.

Can I just unplug the vaccum line for the advance or do I need to replace it with something.

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