Correct '69 Carburetor

[Craig C.]

I recently bought a '69 427/390 w/THM 400 which does not have the correct carburetor. I believe the correct carb for this car should be a Rochester 4BBL #7029204 (not what I currently have). Is this correct? Also, about what carb date stamp range is appropriate for this engine? My engine has an assembly date stamp of July 10. Finally, were any corvette engines of this time perioid assembled with Carter built Q-jets?

Thanks for the info.,

Craig #32671

[Chuck S.]

Re: Correct '69 Carburetor

Craig,

Yep, 7029204 is the right part number. I would look for a core or rebuilt carb dated, generally speaking (not considering strikes or other unusal '69 events), of about one to three weeks before your engine build date; i. e. the last half of June. As a practical matter, the date could probably be up to a couple of months before the engine build without being clearly out of whack.

Regarding Carter contract-built Quadrajets, I know they were supplied, but the only time I am aware of is late '70 model run. The Quadrajet on my '70 is a Carter, dated E0. Having a Carter-built Quadrajet is not something I would aspire to, if I were you; they are rarer than hens teeth in my experience.

Chuck Sangerhausen

[Jerry Clark]

Re: Correct '69 Carburetor

Jerry Luck can supply one, date and all.

jer

[Juliet P.]

Carter built's were scattered in '70, early+late

Definately check with Terry McManmon about your carb number questions. I *think* he has detailed '69 info as well as '70 info. When I was carb hunting I located a Carter built J9 dated (Sept 69) Q-jet. He was able to give me guidance based on his detailed records that Carter built Q-jets for my particular application (7040202) were scattered seemingly randomly throughout 1970, not just later as Chuck mentioned. Sorry Chuck, I just had to point this out. They may be difficult to find, but if you find one, and the date is appropriate, and there is some documented cases of Carter built Q-jets close to the build # of your car, you might want to snag it quickly. Let us know how it turns out! ~Juliet


Visit & Join the 1970 Corvette Registry!

[motorman]

Re: Carter built's were scattered in '70, early+la

i just finished rebuilding a 1971 pontiac Q jet and it was carter built. for some reason these carter built carbs had a rougher outside finish than the rochester built ones. they looked like they have been bead blasted. it came off of a car that has only 14,000 miles on it. be sweet if you could find older corvettes with this kind of low miles.

[Chuck S.]

Re: Carter built's were scattered in '70, early+la

Juliet,

No problema. I wasn't sure of anything except what I knew, i.e. they were out there in late '70. On NDB, we should always feel free to add to or correct misinformation, particularly if it is about to cost someone big money.

Seems like I saw an article (was in the Restorer?) recently about Carter built Quadrajets. Anyway, I don't know why anyone would prefer a Carter over a Rochester; if they are more scarce, they will probably cost more dinero to buy and they won't improve your judging score (assuming you can find a properly dated Rochester).

Whoa, is this the latest fad; getting those imitation Carter-built Rochesters for your '69, '70? Sweeeet! I already got one, properly dated and everything.

Chuck Sangerhausen

[Chuck S.]

Re: Carter built's were scattered in '70, early+la

Motorman,

I'm curious; at such low mileage, were you able to tell what the original color of the Carter Quadrajet was? I have been told they barely had any color, but it was more green than yellow like the Rochesters and Holleys.

Chuck Sangerhausen

[motorman]

Re: Carter built's were scattered in '70, early+la

it is sort of brownish,greenish,gold ,thats under fluorescence lights. will check tomorrow outsde in the sun light

[Roberto L.]

Re: Carter built's were scattered in '70, early+la

Checked the article and shows a sample of carbs with Rochester/Carter porcentages. In that sample 7029204 shows only Rochester carbs, but it is no definitive answer...

I got recently a Carter built 7040503 (California emissions) for my 70.

All my best. Roberto, NCRS #30019, RMC

[Chuck S.]

Re: Carter built's were scattered in '70, early+la

Roberto,

Ah-ha; I knew I saw it somewhere. Where did you find the article? I looked back through the last year of Restorer issues and couldn't find it. I need to start reading my Restorers better; I'm neglecting my education.

Yep, 7040503 is definitely an early (first design) Quadrajet. Did you have your carb rebuilt/restored state-side before it was shipped to you?

Chuck Sangerhausen

[motorman]

Re: Carter built's were scattered in '70, early+la

it still looks the same color outside in the sunlight

[motorman]

Re: Carter built's were scattered in '70, early+la

7040503 is a 1970 california carb. it is for chevys,chevelles,novas,camaros and corvettes with 350 engine.

[Chuck S.]

Re: Carter built's were scattered in '70, early+la

Motorman,

So, Carter Quadrajets are a brownish, greenish, gold...sounds darker than I thought.

Thanks for some good info off a low mileage, original carb. I bet Terry, Reba, Chuck G., and other NCRS judges will make a note if they see these posts.

Chuck Sangerhausen

[motorman]

Re: Carter built's were scattered in '70, early+la

chuck, i took some color pictures of it and if they come out i will send them to you. email me your home address. motorman

[Roberto L.]

Re: Carter built's were scattered in '70, early+la

Check Winter Fall 1997, page 40.

On the Rochester 503, Jerry Luck rebuilded it before shipping thanks to Jack Humphrey's advice. Check Winter 2000.

Roberto, NCRS #30019, RMC