Carbs

[PaulO]

OK,
What is the story with replacement carbs? I know Holley and Edelbrock make marine carbs but, does Holley make a Q-jet spreadbore replacement? Anyone use one?
PaulO

[RickR]

Treir 4010 and 4011 series carbs are spreadbore.
I have no experience with them.

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RICKR
mailto:riggerb@aol.comriggerb@aol.com</A>

[RickSE]

When I called Holley for carb info they told me the 4010 & 4011 carbs were discontinued. This was about 2 months ago.

Holley does make a spread bore carb, but I can't find the part number, their marine web site is all messed up. http://www.holley.com/HiOctn/ProdLine/Marine/Marine.html . I remember seeing it when I was looking for a carb, it was either a 600 or 650 CFM. Just call the tech-line (270) 781-9741

[GeneD]

I highly recommend the Holley.
When I was street racing back in the 80's, I was a confirmed Quad dude.
Then I had just about had enough of the Quadrajet and bought a Holley and the performance gain was incredible.
If you can find a speadbore Holley Marine, go for it.
And Yes, they do make a Quadrajet replacement, I am not familiar with their marine versions though.

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GeneD
007
Melbourne, Florida

[BigGrizzly]

The 4010 is a square bore and the 4011 is the spread bore. these are top loaders- tops come off so fuel stays in. fuel bowls are intregal. the 4010 comes in 600cfm and 750 cfm. the 4011 comes in 650 cfm and 800cfm. l like them bscause youy can change jets and not loose any fuel, takes about 8 minutes for all four jets. PAW sells them. the other day isaw the 4010 600cfm in Overton's. must be left over stock. jegs, and summit also sell marine carbs.
Randy.


[This message has been edited by BigGrizzly (edited 08-31-2000).]

[Blewbyu]

4011 is the polished aluminum "show" carb spreadbore.They also made a 4165 spreadbore in a Double Pumper-but it was a modular carb-probably not good for marine use.Now also discontinued-but in it's day would really pull your jowls back,and on top of a stock manifold.
I now have a Holley 1291 in my Donzi-came with the boat.I'm not impressed.It has the same 2 pc body/lid as the 4010-polished aluminum.Marine carb-nobody can find the 1291 nmbr to get a parts availability/rebuild kit.And.....like all Holley 4bbls-it has a power valve that can rupture if your motor backfires.As a matter of fact-it will rupture(probably) every backfire.It's not expensive or difficult to replace...$7.49 and 15 minutes toil.Why bother?Check out the Carter/Edelbrock line.Their 4bbls better engineered(Weber)and have no power valve.Nearly as tunable as Holley....can change thrust rod springs in 5 minutes,jets in 15.....also 2 pc body/lid.
Having had both,I would not repurchase a Holley.Only one guys opinion of course...
Regards-Jeff

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[Blewbyu]

The Holley 4360 was the Q-jet replacement-and was for engines of smaller displ(up to 305ci).Weighed 2.5 lbs LESS than the Q-jet-but only 450cfm.Introduced in 1976 to be emission/mileage type carburetor.Radical departure from modular Holleys-2 pc aluminum.
Smaller primary venturis EXTREMELY sensitive to airflow and the pulses generated by long duration cams.Good economy.