Has anyone used a Holley Ecoomiser Four barrel .

[Edcarb]

I got one, the quadrajet replacement. Just wondered if got cruise right and kept back from opening If they be very good carb for gas mileage?

[rgalajda]

I have never even seen one . You can still buy some of these new in box from All Carbs in New York or other places ( old stock ) for $150 - $250.
I do a lot of Quadrajet carbs. I can't see how Holley could improve on that carb.

[bigblockmark]

Weren't those carbs only 450 CFM?

[Edcarb]

Something like 450 cfm and used on small V8s and V6s. Have to wire the back barrels closed on bigger motors or it would come open real early. Just dreaming about helping a Big block get better MPG lol.

[Papastoy72]

Tried one out long ago when they first came out on a 75 Olds 98 455. Carb worked but the big Olds felt like it was powered by a 260. Had to keep your foot into the gas to make the big car move so gas mileage sucked compared to the Qjet. Put another Qjet back on and things went back to normal. I believe it had the reverse idle screws. IIRC, Holley literature at the time (late 70's, early 80's) said it could replace any Qjet on any car .

[77cruiser]

I did have a 4360 on my 305, it didn't improve MPG over a Qjet though, although it did run real good with it though.
If someone wants it, it will be a deal.

[GTO Geoff]

I don't think Holley.....& economy go together......