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Has anyone used a Holley Ecoomiser Four barrel .

PostPosted: Fri Jun 09, 2023 11:13 am
by 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?

Re: Has anyone used a Holley Ecoomiser Four barrel .

PostPosted: Sat Jun 10, 2023 9:59 am
by 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.

Re: Has anyone used a Holley Ecoomiser Four barrel .

PostPosted: Sat Jun 10, 2023 10:31 pm
by bigblockmark
Weren't those carbs only 450 CFM?

Re: Has anyone used a Holley Ecoomiser Four barrel .

PostPosted: Sun Jun 11, 2023 7:30 am
by 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.

Re: Has anyone used a Holley Ecoomiser Four barrel .

PostPosted: Sun Jun 11, 2023 12:59 pm
by 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 :roll: .

Re: Has anyone used a Holley Ecoomiser Four barrel .

PostPosted: Sat Jun 17, 2023 6:59 pm
by 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.

Re: Has anyone used a Holley Ecoomiser Four barrel .

PostPosted: Sun Jun 18, 2023 6:24 am
by GTO Geoff
I don't think Holley.....& economy go together......