What do I do? It's a 750 edelbrock. I just built a new motor and trans and cannot afford a different carb. Any tricks to getting this thing into shape cheaply? The car will idle well all day somedays, but after getting to about 160 degrees on other days, it will start to idle rough (jumping between 400 and 700 rpm). It has a large cam, but not that large. Also, the engine cuts out or attempts to cut out if I cut the car into a hard turn without depressing the accelerator. I just adjusted the floats yesterday in accordance to the instruction sheet and it changed nothing. Last, fairly often the car has a bog. The bog is most apparent when stomping the pedal from a stop. It is a short bog and the car takes off very well afterwards, but I can't see that being right. Oh, yet another thing, I was backing the car up earlier and gave the gas a good tap. The tires spun a bit and the motor died. I started it and did the same thing again but this time I kept giving it just a little gas after I spun the tires a bit and it lost rpms but kept running. By the way, this last carb I had on the car was a brand new 670 holley street avenger which I quickly scrapped because it had a bad bog. The same bog as this edlebrock. I bought a timing advance spring and weight kit which proved that all the spring combinations I tried led to the same bog. What do I do guys? Thanks, Jim

Have you checked your timing yet? Have you tried testing to make sure you are running the proper PSI on your fuel pump?

I am running 5 p.s.i right now. I just installed a new holley blue pump and regulator along with a inline mounted fuel pressure gauge. I have tested the carb on 3-7 p.s.i. NO good news. Timing has been played with also. I set it up with an advance light when I first built the motor. I may check it again although cause that could possibly be the cause of the hard starting when warm.

Mine did the same stalling thing in the corners, just turned the needles out a bit and it stopped. Didnt have the idle drop when it got hot though...

Lower the float height setting. So that the fuel sits lower in the fuel bowls.
Lower fuel height= better fuel slosh control in turns.
Edelbrocks spec is an initial setting, tune from there.
Edelbrock carbs like lots of initial timing at idle . More initial timing= better throttle response.
recurve your distributor for more initial at idle but the same 34-36 at max advance.
Spark plugs that are dirty and or improperly gapped will cause poor throttle response.
Adjust the accelorator pump linkage to get a better initial fuel shot volume.
Increase the size of the accelorator shooters.

my edelbrock would fall flat on its face when i'd stomp it. i'd done nozzles, jets, rods, springs, most everything.

I changed over to full manifold timing, that seemed to help the most. retuned the idle. hesitation at a WOT smash disappeared almost 100%. now its acting really well, actually takes off like a normal car... I'd almost given up on this carb, to tell the truth. now to get the tranny under order.

edlebrock 1405 (600)... I've set floats, changed to104 primary jets, 107 secondaries, purple springs, .43 accl. nozzle, and recommended metering rods( don't remember off hand,#4 on tuning chart). K&N filter and stubstack.

...almost as good as the Qjet i had on the LG4

would like to go richer on the secondaries someday soon...

F-Bird and Tobias thanks for the great info I have the exact same problem you did Tobias. Tried all the stuff you mentioned except what finally solved your issue. I'm going to try what you did (manifold Vac etc.) I am at the edge of giving up on this Carb too! Hope it works!

F-Bird and Tobias…Thanks again for the great posts. For the last 10 mos I have been trying to figure out this Bog issue. I had called Edelbrock 3 times and also the place I bought my HEI from. I had a hell of a time because I had converted to HEI, Put on a Performer Air Gap manifold, and a new carb at the same time…this is a great way to do upgrades unless of course you have an issue come up like this! So I had 3 different issues to try to eliminate to even begin to understand what was causing my issue. On top of this it ironically turns out that my balancer is at 10deg when my piston is at TDC. Needless to say all of these issues really made it hard to figure the BOG out. Edelbrock did not have a clue and never made any of the suggestions you two posted above. As a matter of fact they had me pull my Intake and install again because they figured I had a manifold Vac leak even though I had checked it and it was 17-22” HG. A lot of work for nothing! So after seeing your posts I did the following:
Changed and gapped plugs (I had fairly new Bosch Platimums but figured what the hay so I put in new cheapy Champions no less)<O</O
Set Idle with Tach to 750.<O</O
Set Idle mix with Vac guage to obtain highest reading.<O</O
Moved vac advance to Full Manifold vac and plugged of carb outlet.<O</O
Set timing to 18deg... did not know I was reading 10deg off at the time so it was really 28!<O</O
Took her for a test drive and…and…Smoked the tires! NO MORE BOG! Thank you guys!Now I just have to tweak things but at least it runs like a Camaro should!!