Carb Replacement - Stock 350 (‘70 Malibu) - Chevelle Tech
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post #1 of 15 (permalink) Old Aug 9th, 19, 1:43 PM Thread Starter
 
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Carb Replacement - Stock 350 (‘70 Malibu)

I’m sure this has been covered in previous post, but I’m new to the forum today and would like to connect with the bright minds here.

The inlet threads of my carb striped out, I know there are fixes available, but I’m curious about new carb options.

I’d like an easy to install and adjust carb with a little added performance over the original. The only alterations to ‘70 Malibu’s stock 350 is an open air filter and headers with true dual exhaust.

What is out there that I could purchase in the $200-$400 range that would be quick “plug n play” solution?
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post #2 of 15 (permalink) Old Aug 9th, 19, 2:23 PM
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Ed
 
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Re: Carb Replacement - Stock 350 (‘70 Malibu)

Where are you? I'd start with craigslist.

1967 El Camino Malibu - Deepwater Blue
ZZ4 350, FiTech 600 complete!,Roadmaster tank, 700R4, Underdash A/C in progress, JGC Steering, 1990s truck serpentine.
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post #3 of 15 (permalink) Old Aug 9th, 19, 2:38 PM Thread Starter
 
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20 miles West of Minneapolis, MN
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post #4 of 15 (permalink) Old Aug 9th, 19, 2:47 PM
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Lang
 
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Re: Carb Replacement - Stock 350 (70 Malibu)

Save your Money, go to the local Auto Parts Store and pick up a Carburetor Inlet Repair Fitting from the Dorman/Help section, make sure you clean everything up before you install it, and your good to go. You are not going to find any serious performance improvement in the price range your looking to spend, without serious additional upgrades.

Ideas are like children: there are none so wonderful as your own.
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post #5 of 15 (permalink) Old Aug 9th, 19, 2:49 PM
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Re: Carb Replacement - Stock 350 (70 Malibu)

I have three of these on SBC and BBC



Love 'em right outa the box.



https://www.summitracing.com/parts/sum-m08600vs


and


https://www.summitracing.com/parts/sum-m08750vs


They perform better than one of my Holley Street Avengers and one of my Quadrajets
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post #6 of 15 (permalink) Old Aug 9th, 19, 4:00 PM
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Re: Carb Replacement - Stock 350 (‘70 Malibu)

2bbl or 4bbl ?

Bill Koustenis
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Waldorf Md


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post #7 of 15 (permalink) Old Aug 9th, 19, 4:27 PM Thread Starter
 
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2 bbl
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post #8 of 15 (permalink) Old Aug 9th, 19, 11:05 PM
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Re: Carb Replacement - Stock 350 (‘70 Malibu)

www.customrebuiltcarbs.com Click on the link and call, I'm sure they'll be able to help and good luck!

Leo Paugh
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progress has little to do with speed, but lots to do with direction

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post #9 of 15 (permalink) Old Aug 10th, 19, 2:28 PM
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Greg.
 
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Re: Carb Replacement - Stock 350 (70 Malibu)

Like the old Style Quadra Jets but with the bugs taken out

https://www.jegs.com/i/Demon-Carbure.../1901/10002/-1

There are TC members who have installed them on their Engines right out of the Box & running

And IMHO you will see better Gas Mileage & Perf than the old 2 bbl

67 Chevelle Malibu SS Cdn
Born 283 / PG / A51
468/TH400 2,500 stall/ S60 3.70 Gs
Prev Best on M/T ET S/S #3454 street Tires/Dress 2018/05/20
60' = 1.664
1/8 = 7.532 et / 91 mph
1/4 = 11.814 et / 115 mph
NEW Best with 3,500+ Stall TC 2019/09/08
60' = 1.547
1/8 = 7.311 et / 91.76 mph
1/4 = 11.595 et / 114.28 mph


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post #10 of 15 (permalink) Old Aug 10th, 19, 2:49 PM
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Re: Carb Replacement - Stock 350 (‘70 Malibu)

A parts store replacement would be the cheapest, ie, another Rochester 2G, I think.

If yours is otherwise working, the inlet thread repair would allow you to keep a know good, well adjusted carb.

If a four barrel, an Edelbrock 1406 is a very reliable carb.

My best suggestion would be a Holley 80457, which is a 600 cfm vacuum secondary four barrel. It would work stock, maybe needing a jet change, is super reliable, and parts are readily available anywhere if you ever need them.

66 Malibu Coupe, home rebuilt 350. Took me 39 years to get her!
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post #11 of 15 (permalink) Old Aug 10th, 19, 4:08 PM
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Re: Carb Replacement - Stock 350 (70 Malibu)

I have a 2 barrel carb from a 1972 350 that was a running car when I got it. It looks good and clean and has a tag on it from some rebuilder. The throttle shaft is tight and everything looks right. It is yours if you will pay the postage. PM me with your info if you are interested.
It fits into a Priority Mail carton 9x6x11 OK, but I do not know what the cost of postage is at this time.
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post #12 of 15 (permalink) Old Aug 11th, 19, 9:30 AM
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I would fix the inlet on your carb. Most parts store “rebuilder” carbs have the calibrations all screwed up. If the carb on you car has never been through a commercial rebuilder, you’ll be better off keeping it.
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post #13 of 15 (permalink) Old Aug 11th, 19, 11:46 AM
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Re: Carb Replacement - Stock 350 (70 Malibu)

If you're anything like me and probably most of the Chevelle owners here, if you need to replace a part or item, you'll want to upgrade.
I would go with a 4 barrel ( you will love the way it sounds with your exhaust set up ), which means in your case an intake upgrade as well. Fortunately for you, parts for a 350 sbc are rather inexpensive.
I like the Holley carbs. They are plug and play out of the box and easy to tune if needed.
I also can't help myself when it comes to my car, once I start buying new things for it, it usually snowballs out of control.
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post #14 of 15 (permalink) Old Aug 11th, 19, 12:22 PM
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I upgraded my 283, 2-barrel Rochester, single exhaust to 4-barrel Rpm intake, street demon 625, dual exhaust w/Magnaflow muffler —- 2 years ago, haven’t looked back, car runs and sounds amazing.
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post #15 of 15 (permalink) Old Aug 15th, 19, 8:06 PM Thread Starter
 
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Thanks all! At this point I’m going for the repair fitting. Any insight on which of these part numbers is better from NAPA? https://photos.app.goo.gl/yU17ge4XNovUNrwP9
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