https://board.moparts.org/ubbthreads/show...&PHPSESSID=I will post that link a second time - READ IT READ IT - There are good links within links
How come the Edelbrock 750 , I REPEAT EDELBROCK 750 - 1407/1411 , NOT THE 800 NOT 600 NOT , is the most talked about Carb on this Website , and its mostly 99% Negative/Issues ???
And i dont care what you throw at it internally - Its nothing more then a P.O.S. Expensive Paperweight
I love these Quotes - Straight from the Moparts Tech Archives/Dyno 383 - Go ahead and look them up yourself - All the Dyno #s and info right here on this site
"All the aftermarket carbs tested ran fine with the stock calibration except one...the Edelbrock 750, #1407. this one ran very poorly.....it didnt really do anything well. it was just flat out lean everywhere. idle, part throttle cruise, WOT...and it didnt like to take a load at all. when getting ready to start a pull and going to full power, the motor would fall right on its face, then try to recover....finally recover, and then you could start the pull.
i found this to be pretty interesting because i also had on hand a Carter AFB 750 manual choke version which ran perfectly fine everywhere.
decent throttle response, good part throttle cruise A/F ratios, decent idle A/F ratio with the mixture screws out only 2 turns, and the WOT A/F ratio was right where it should be, and it had a pretty flat fuel curve as well.
i was running short on time, so i just continued on my testing of other things. when i was done for the night i pulled apart the Ebrock carb to see if someone had recalibrated it. this is not a new carb, but was pulled from my friends 396 Chevy yesterday morning. he's been running on the street, and didnt really indicate there was any kinds of problems with it, but there was an indication that another friend of his may have changed some jets or something.
well....that was not the case. it had all the stock jets, rods, and springs, and had no dirt or debris inside. the calibration was just that far off from ALL the other aftermarket carbs.
IMO, the Ebrock carbs are set up for motors that are much milder than what most people are building. well, most people i know anyway
anyway....back to the trenches....."
"The only carb that didnt actually run well was the Ebrock carb. it just didnt do anything well. poor idle, too lean everywhere, didnt take a load well, etc.
when i had a chance, i pulled it apart to see if there was any dirt or debris inside, and it was nice and clean. i also verified the calibration.
it was calibrated to the specs in the catalog."
"One final note....
i dont have anything against Ebrock carbs. it seems some here have a hard time grasping that it didnt run well. trust me...it didnt run well. its that simple. its not hard to tell if its good or bad when youve already made nearly 70 pulls on the motor before installing this carb.
yes, the problems it had could be tuned out of it. thats obvious since the Carter 750, which is the same thing ran just fine.
it ran how it ran...which wasnt good.
this is one of those "dont shoot the messenger" situations."
Enjoy all the Numbers / Quotes - Actually a great Arcticle on a whole bunch of Carbs - Click on Links
http://www.moparts.org/Tech/Archive/bb/25.htmlhttp://www.moparts.org/Tech/Archive/bb/26.htmlPEACE - Scott
I will add this - The Main Difference between the Edelbrock 750 and that Carter AFB 750 has alot more to doo with Internal Fuel Metering/Internal Airflow then just changing Jets and Metering Rods - And i dont care if there both made by Weber - You can take that to the Bank - Again read those LINKS
Scott
