Very encouraging to hear. Glad some things are coming back to the USA. Thanks for getting this info!

Kent — Round Rock, TX
'56 F-100  | '56 Crown Vic  |  '57 Fairlaine 500  |  '57 Thunderbird

The Summit 500 I ordered at the beginning of February is ready to ship from Georgia. Arrival is stated for Monday March 1st. I looked on line and there was 1 left. None when I ordered. Sounds like they are finishing them as needed. I’ll at least take the top off from what I’ve read here.
Not sure when I’ll put it on, the dual quads are fine right now but since the PCV system I’ve had to tinker more in the last month than I did in 5 years with them. It will go on the Blue Thunder I have and I’ll try to use it with an original 56 air cleaner I’ve gutted. I’ll want it low to hide most of the new carb.

56 Vic, B'Ville 200 MPH Club Member, So Cal.

I talked with the Techie (actual name with held) at Summit and with a little bit of tracking on his end, the Summit 4010 line of carbs are not only assembled in the U.S.A., they are now cast in the U.S.A..  That’s probably the reason I no longer see made in Mexico on the newer boxes.  He did mention that Holley is not associated with producing this particular carburetor that has the Summit badging.  If that’s the case, Holley is either leasing the rights to produce this carb to someone else or has sold off the rights to it.  It would take some additional sleuthing to root this out.
 
I suggested to the Summit techie that the labeling should be changed to say Made in U.S.A. but that can only take place if 100% of the parts within the carb are made in the U.S.A.  If there is something as simple as a cover screw that’s imported, then a MADE IN U.S.A. claim is not allowed.  That’s where the ‘Assembled in U.S.A.’ comes into play.

Lorena, Texas (South of Waco)

My Summit 750VS carb box has assembled in USA on the label.

ASSEMBLED is the key word. Nothing states where cast and/or machined.

Same on RED WINGS here. Had a pair for years that felt like moccasins. Finally blew out. Go to official RED WING OUTLET STORE and pick up a pair - MADE IN CHINA.

Ask the guy (store owner) and he says they are cut out up north then shipped to CHINA for assembly. Says no one up there wants to work sewing boots together. Maybe pay a decent wage and you will find help. So what do I do? Buy the things and they killed my feet. Bought next pair from WALLY-WORLD. If I have to wear CHI-COM JUMP BOOTS made from yak skin, no reason to pay the big bucks for a name.

Anyone remember some years back when EDEL was casting intakes in CHINA? That caused an uproar.

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Surfing the net, it confirmed what I already knew; at least some of Holley's carburetors are MADE in CHINA. That surely must include Holley carburetors that do not bare the Holley name. 

At least 10 years ago, I ordered a pair of Red Wing hiking boots. I wanted a quality pair of American-made boots, and they seemingly fit the bill. When they arrived, the box said, "Made in America with Imported Materials." I was perplexed because we have lots of cows in America; we don't need to import them. 

Anytime you read, "Assembled in America," it's a pretty clear indication that the components were not made in America and likely made in China. 

There are manufacturing plants in other countries, including China, that are equal/superior to what we have here at home. Some of those manufacturers have American investors. In some cases, the quality is equal to/greater than what is made here, and it's cheaper. We can argue that if American consumers were willing to pay more, more products would be manufactured here. However, paying more will not necessarily assure you're getting a better product or that the workers who made it are being paid a living wage. Instead, the profits are just/more likely to line the pockets of corporate executives and investors. Isn't that the American way and has been since the industrial revolution of the 19th century?

My Summit 750VS carb box has assembled in USA on the label.  Nothing in or on the box or on the carburetor body states made in China.  Same for my 500VS.  I checked my Quick Fuel Carb boxes, and they have printed on them, Assembled and tested in USA.  My Edelbrock boxes have Made in USA on them.  Joe-JDC

JDC

When the SUMMIT was released, there was much scuttlebutt over its same appearance as the HOLLEY 4010.

When HOLLEY ended production of the 4010/4011, all tooling was destroyed. Someone then purchased the design rights and with a former HOLLEY TECH went about redesigning the carb to rid it of the problem(s) that HOLLEY had with theirs. I believe the casting(s) were done in CHINA (not sure of machining) and then assembled here (ASSEMBLED IN USA).
If current production reads MADE IN MEXICO, it may be possible the castings and assembly are now being done there.

According to the Summit rep I spoke to, Holley destroyed the original molds for the old 4010 carburetor. The “guy” who designed the 4010 also helped design the Summit version… making improvements on the shortcomings of the 4010, and Holley supposedly makes these carbs for Summit. The box says “Assembled in USA but I still can’t get a straight answer on how (or if) China is involved.

SOURCE - https://www.fordmuscleforums.com/threads/summit-carb-review-and-road-test.482814/

Why would HOLLEY sell the rights and then allow someone else to produce basically the same product? Maybe HOLLEY is getting royalties? HOLLEY moved most of their production to MEXICO years ago. There may be a tie-in, I don't know.

All I know is I am a little particular and want nothing boasting MADE IN CHINA on either my car (there are some things you have to eat now) or in my tool box.

It's a shame as the 4010 would have one great street carb (IMO) had HOLLEY sorted out the problem(s).

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The trouble with going 4V and after getting it dialed in is keeping your foot out of it.

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What has been said in other posts, and needs to be repeated is that when changing from a 2V carb to a 4V carb, almost to a carb, the primaries of a 4V are smaller than the 2V butterflies, and will be more economical if driven with care.  I have never had a vehicle where I changed the intake manifolds from 2V to 4V, and got less mileage on the road.  I usually do some other modifications at the same time, like recurve the distributor, aluminum intake, headers, dual exhausts, good low restriction mufflers, and many times changed camshafts, rocker arms, etc.  The gas mileage always improved with those modifications, even in my trucks before EFI, if driven sensibly.  Joe-JDC

JDC

Not sure where you get the China connection as an older Summit carb box I have here says “Made in Mexico”.  I just looked at a new box and it simply says “ASSEMBLED IN U.S.”.  But come tomorrow morning, I'll just give the techies a call and see what they say.

Lorena, Texas (South of Waco)