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Author Topic: 7029207  (Read 4685 times)

Offline Bill Stephens

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7029207
« on: June 13, 2016, 04:50:19 AM »
I have a 1969 350/300 corvette with automatic transmission. It has a 7029207 quadrajet and I've bought a used one to rebuild. I have conflicting information on the 7029207. I've been told that it is a service replacement for all small block chevys over a range of years, but I've also been told that it is specifically for a 350/350 with standard transmission and needs to be modified before being rebuilt. I'm looking for definitive information before buying parts and rebuilding. Thanks.
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Offline carmantx

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Re: 7029207
« Reply #1 on: June 13, 2016, 05:53:03 AM »
What is the date code on yours?
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Offline Bill Stephens

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Re: 7029207
« Reply #2 on: June 13, 2016, 06:54:16 AM »
1685 on the replacement and 1308 on the car. Both are 07029207.
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Offline Ethan1

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Re: 7029207
« Reply #3 on: June 13, 2016, 09:48:54 AM »
Quote from: Bill Stephens on June 13, 2016, 06:54:16 AM
1685 on the replacement and 1308 on the car. Both are 07029207.

 Welcome to CHP!

 Definitely a Service Replacement as per the date code and the part number beginning with a "0". I believe ALL Qjet carbs that started with a "0", were a SR carb.
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Ethan

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Offline Bill Stephens

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Re: 7029207
« Reply #4 on: June 13, 2016, 10:06:02 AM »
Thanks Ethan. So do you believe it doesn't need any modifications prior to installation on an automatic? What is the difference between quadrajets for standards and automatics? I figure there must be a difference since they specify different numbers, but are they close enough to be interchangeable?
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Offline Ethan1

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Re: 7029207
« Reply #5 on: June 13, 2016, 10:10:52 AM »
Quote from: Bill Stephens on June 13, 2016, 10:06:02 AM
Thanks Ethan. So do you believe it doesn't need any modifications prior to installation on an automatic? What is the difference between quadrajets for standards and automatics? I figure there must be a difference since they specify different numbers, but are they close enough to be interchangeable?

 Bill,
 There is slight differences in jetting/metering and linkage on the throttle body. FWIW, I put a 1979 Corvette M/T carb on my A/T Chevelle and I had no problems. But, that is not to say you won't. Sorry, I cannot help out further. :(
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Ethan

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Offline Bill Stephens

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Re: 7029207
« Reply #6 on: June 13, 2016, 12:25:31 PM »
No problem. Appreciate your help. That's what I've been hearing from everyone so my guess is that it will work fine.
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Offline Cliff Ruggles

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Re: 7029207
« Reply #7 on: June 30, 2016, 02:17:50 AM »
The 07029207 and 7029207 SR carburetors were close in set-up to the originals but not exactly the same calibration.

I've built quite a few of each and the originals had smaller jets and metering rods on the primary side.

I suspect they recalibrated the SR's to cover a broader range of applications.  They are actually pretty common, but the original dated 7029207 carburetors are pretty rare.....Cliff
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