Well went back to the 600 edelcrap since my race season is over. Car is much slower but damn fuel economy jumped back upto 4 cyl range lol, 19 mpg city not kidding either. Still having the same issues with the edlecrap which made me remove it in the first place. WOT, car seems to run out of fuel bogs down and picks up then bogs. Not an issue with the holley on there. Fuel pressure is great 6-7 PSI at all times. Odd too when you hit 5kish the choke light will pop on before the car starts to die out. Dident do it with the holley I could pull to 6500 with no issue. The carb also seems to bleed down after running and blows black smoke on a hot start. Throttle plates arent open an abnormal amount and Im seeing no reason for it. I pulled it apart and cleaned it before it went back on double checked the floats and float levels everything is spec according to edelcrap so I dont know... This carb was robbed from my buddy because it did the same damn thing on his truck right out of the box brand new. So I dont know there isnt any phisical reason for it as far as I can tell. I need help I cant figure this one out.

 

Have you read the Edelbrock manual? There is lots of information in that will tell you how to tune the carb. I ran one on my Goodwrench 350 before I went TPI and it ran great. I also think that the Eddy calibration kit if a very good investment along with a vacuum gauge.

Sounds like you may need a lighter spring on the metering rods. When you step on it, and vacuum drops, the springs are pushing the metering rods out of the jets too quickly.

 

Damon's "alomst-always-true rule of carb bogs": all bogs are lean bogs.

 

I could buy a lean bog in the secondary circut causing this but it doesent always happen. It gets real picky the hotter it gets. I can drive around for 30 minuets and the car will run flawless, the choke is full open with 3 min or less of run time. If I go over the 30 minuet mark and only with this carb on the car will do as described above. The holley could be ran all day drive out to the track and run between 13.2-14's all night with no stopping. I know edelcraps are pickey on temp but this is crazy. The carb seems spot on as far as tuning goes I have 5k on the engine and the plugs look great still with no sign of running lean. I could try to fatten up the secondary circut to see if the WOT problem will go away but I dont know if it will do any good. It acts like a FI car when the fuel pump starts to crap out but both pumps are good and hold pressure. I by passed my block pump and ran the electric only then bypassed the eletric and ran the block pump only, same thing. The only difference I saw was the block pump wouldent maitain pressure WOT it would dip to like 4 PSI but with both pumps on it wont drop below 6ish.

 

i ran a edelcrock on my old 350 and never could get it to run right, i had a 750cfm model and a 600 cfm model, both ran the same, bogged like hell if you stood on it, then after stumbling for a little it would take off. I tried so many different tuning configurations its not funny, probably spend 200 bux on tuning parts for them. What i eventually figured was that the issue was the secondary air vavle. Its not adjustable on the performer series and seemed to be the cause of the issues. I disconnected the secondaries a few times and tuned the car to run on just the front 2 barrels and had no problems, other than lack of top end power.

Solution; open trash can, insert edelcrock carb, close trash can.

 

Yea I agree. I gave up on them a while back also but this one came to me new in a time of need for free. I had long since tossed all my edelcrap tunning stuff but I kept the 700R4 bracket since it was nice to have and it all just kinda fell on my car with a little help. I unfourtuanetly cant afford to get a smaller holley or a spreadbore intake to get a Q-jet back on there at this time. So im kinda stuck with this carb since the holley went to the truck and I nearly doubled my fuel economy by going back the the edelcrap which helps since this is the only car I have right now and my new job well..... I can make the mortguage... lol

 

I missed where you said WOT bog. Is the bog only at WOT or on tip-in also? If on tip-in adjust step-up springs. If only at WOT change secondary jets.

 

Yea tip in is perfect, normal driving is spot on smooth as can be under all but WOT conditions.

 

You may try fattening up the secondary jets. If you have any type of O2 meter, I would make sure that it's a lean bog first before you start throwing money at jets going larger when maybe you should be going smaller.

 

Well figured it was time for an update since I figured out the problem. Cooler weather and rolled up windows helped me pinpoint what was going on.... Bad raw fuel smell. Seems the carb had an internal flaw apperently from the factory. Good old made in the USA products lol. The right side of the carb must have a small crack in it between the bowl and the secondary air circut. Where the secondary air valve weight on the right side is it fills up with fuel. The gaskets are good all screws are tight so its gotta be a crack in the casting especially since its below gasket level and while running nothing is dripping in seems to fill from below. Im thinking it was just sucking raw fuel when going wot between shifts when vacuum would increase for a moment and suck the gas down. The choke light was apperently an issue with the choke when it was bypassed the light wouldent pop on and the charging system would stay spot on. 2 issues One new carb makes you wonder what the world is comming to.