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Old 08-27-2018, 10:41 PM   #1
68gmsee
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Yes or no on an Edelbrock 1407

I'm not familiar with the Edelbrocks but I was given this one. It's newly remanufactured by National Carbs and stamped as a 1407. Everything I read says it's a 750 cfm which is overkill for my 350 bored .040 over with a mild cam. Some say run it and see what happens others say it's too much.

I'm at about 300 feet above sea level and always have used Qjets before. Question is should I sell it, trade it or try it.
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Old 08-27-2018, 11:07 PM   #2
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Re: Yes or no on an Edelbrock 1407

I would think you have nothing to lose to try it, but I wouldn’t invest too much time or money in it. If it works - great and you are ahead. You will probably be better off though with a 1406 or going back to a Quadrajet.
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Old 08-27-2018, 11:14 PM   #3
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Re: Yes or no on an Edelbrock 1407

Try it .
Then trade it for a Quad. IMO.
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Old 08-27-2018, 11:36 PM   #4
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Re: Yes or no on an Edelbrock 1407

Get a tunnel ram and use it as the secondary carb with a quadrajet on front!

Don’t laugh!
My buddy did just that on a 327.
Totally hauled the freight!
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Old 08-28-2018, 12:18 AM   #5
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Re: Yes or no on an Edelbrock 1407

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Originally Posted by geezer#99 View Post
Get a tunnel ram and use it as the secondary carb with a quadrajet on front!

Don’t laugh!
My buddy did just that on a 327.
Totally hauled the freight!
Dare I ask.....what was the rationale? Or is it what he had laying around?
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Old 08-28-2018, 12:27 AM   #6
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Re: Yes or no on an Edelbrock 1407

Likely cause it was out of the norm!
Started lots of talk at the car shows.
It was in a 57 bel air gasser. 4 speed and 4.88’s out back.
That was a mild motor compared to the L-88 he had in his 73 gmc. He used it to pull his 5th wheel holiday trailer. Passed everything but a gas station!

Thanks for squashing the other thread!
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Old 08-28-2018, 06:15 AM   #7
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Re: Yes or no on an Edelbrock 1407

If your intake is setup for a Q-jet, you may need an adapter plate to prevent air leaks. As long as you keep the back two barrels closed, it is a 375 cfm carb.

Before installation, check the float levels and jet/rod numbers. A lot of Eddy's come set rich for a 'race car' setup and wind up being too rich for a daily driver street rig.
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Old 08-28-2018, 08:23 AM   #8
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Re: Yes or no on an Edelbrock 1407

I'll give it a try but I won't be doing it for a couple of months since it's over 100 degrees in the garage right now.

According to the owner the carb was built for street use but never used. It's been sitting in my garage for a year or so and I also have a good Qjet available should this one turn out to be too much.

The two carb setup would definitely be a head scratcher -especially for the college students who always want to be in front at stop lights over here. However, since the engine is not going to be used for performance and I already have a manifold, I'll just keep it a single. My wife's cousin is building a performance 69 Camaro and has expressed interest so I have a potential customer if need be.
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Old 08-28-2018, 09:16 AM   #9
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Re: Yes or no on an Edelbrock 1407

If you have a fish on the line(Camaro guy) sell it to him.
You could be spending a couple hundred more if you need to use a fuel reg, a heat spacer or maybe a new fuel pump.
All those things you don’t need with a quadrajet.
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Old 08-28-2018, 10:02 AM   #10
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Re: Yes or no on an Edelbrock 1407

Didn’t know you had a Quadrajet available. Throw that on and be done with it! Engine is set up for it, bolt on and go!
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Old 08-28-2018, 10:06 AM   #11
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Re: Yes or no on an Edelbrock 1407

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Originally Posted by 68gmsee View Post
I'll give it a try but I won't be doing it for a couple of months since it's over 100 degrees in the garage right now.
I WISH my garage would get down to just 100 degrees. Most of the past two months have been over 115.
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Old 08-28-2018, 12:50 PM   #12
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Re: Yes or no on an Edelbrock 1407

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I WISH my garage would get down to just 100 degrees. Most of the past two months have been over 115.
lol... I hear you. We've had more 100 degree days this summer than I care to remember. I know it gets close to 120 degrees in the garage when I forget to open the side door and turn the fans on.
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Old 08-28-2018, 01:12 PM   #13
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Re: Yes or no on an Edelbrock 1407

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Originally Posted by geezer#99 View Post
If you have a fish on the line(Camaro guy) sell it to him.
You could be spending a couple hundred more if you need to use a fuel reg, a heat spacer or maybe a new fuel pump.
All those things you don’t need with a quadrajet.
Quote:
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Didn’t know you had a Quadrajet available. Throw that on and be done with it! Engine is set up for it, bolt on and go!
I basically just wanted to see how it ran with the Edelbrock. I know the Qjet is a good one since I ran it in another engine but didn't think about having to get a fuel reg. I did read that these 1407's like around 4 to 4.5 psi and I believe the fuel pump I have is rated at 5-6 or so. I can get the adapter for around $20 but if I have to spend more than that I'll just use the quadrajet. Thanks for the info.
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Old 08-28-2018, 01:32 PM   #14
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Re: Yes or no on an Edelbrock 1407

Quadrajet would be the better choice.

I don’t know how you guys handle that heat!
It’s a nice 65F here right now.
Our max temp is no more than 85F with a little humidity.
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Old 08-28-2018, 11:14 PM   #15
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Re: Yes or no on an Edelbrock 1407

The majority of Qjets are 750 cfm carbs so no difference there. The 1407 is a air valve secondary carb so it will only open the secondaries as much as the engine is flowing. (Assuming it is properly set up). The need for fuel regulator is a well known issue with the Edlebrocks. But if your running a mechanical pump I say give it a try and see how it runs. Just be aware jet sizes is going to need to verified before hand and then checked against what Edlebrock says is appropriate for your combination. For all you know the carb could have come off a 460 boat motor.
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Old 08-29-2018, 06:23 PM   #16
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Re: Yes or no on an Edelbrock 1407

This 1407 was given to me when I bought a 350 engine from a local person. According to him, he ordered it from National Carbs to put in his 77 Corvette but chose to go with a different carb and bigger engine instead. Since it's a newly rebuilt carb I'll try it first to see how it runs.

As I mentioned, I have the engine on a stand in the garage waiting for some machine shop work and it will probably be a couple of months before it gets cool enough to work on it. Sure wish I had an a/c in there but it's an old non insulated garage and would cost an arm to cool it.

Geez, I lived a few years in Idaho and experienced the cold y'all get up north. The 6 months of cold weather got to be too much so I came back to Texas. We get about three months of hot to hotter weather but winters are more tolerable.
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Old 08-29-2018, 06:55 PM   #17
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Re: Yes or no on an Edelbrock 1407

[QUOTE=68gmsee;833325

Geez, I lived a few years in Idaho and experienced the cold y'all get up north. The 6 months of cold weather got to be too much so I came back to Texas. We get about three months of hot to hotter weather but winters are more tolerable.[/QUOTE]

Born and raised in Idaho. Been in Arizona since 88. I'm dying to get back. I'll take the cold over the heat any day.
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Old 08-29-2018, 07:09 PM   #18
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Re: Yes or no on an Edelbrock 1407

I got tired of the real cold. Sometimes 40 below. Usually 20 degrees warmer than that though.
So we moved to the west coast. Winter is normally around 40F with some rare snow.

So ya run that 750.
You’ll likely learn a few things like vacuum signal, boosters, air doors, setting two floats, float levels and boiling fuel.
Good carb. Not perfect but work well.
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Old 08-29-2018, 08:10 PM   #19
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Re: Yes or no on an Edelbrock 1407

Quote:
Originally Posted by geezer#99 View Post
...
So ya run that 750.
You’ll likely learn a few things like vacuum signal, boosters, air doors, setting two floats, float levels and boiling fuel.
Good carb. Not perfect but work well.
Yeah, I'll give it a try since it's a freebie and to satisfy my curiosity since I've always used Quadrajets. If it gets to be too much, I'll probably just sell it to wife's cousin afterwards.
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Old 08-30-2018, 07:50 AM   #20
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Re: Yes or no on an Edelbrock 1407

Yes or No on an Edelbrock 1407

Yes x No
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Old 09-04-2018, 11:05 PM   #21
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Re: Yes or no on an Edelbrock 1407

I didn't want to hijack the discussion until 68gmsee decided which carb he was going with.

Now that he has, I have a Q-Jet / Edelbrock question. I am running an Eddy 1406 with a fuel regulator and a 1" Phenolic spacer on a stock SBC 350 now and I have a Q-Jet off an Olds 307 that I've been wanting to try. (To see if I can get a bit better mileage and do away with the spacer and regulator.) I've been told that it might run too lean on my 350.

Any thoughts or suggestions?
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Old 09-04-2018, 11:35 PM   #22
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Re: Yes or no on an Edelbrock 1407

Find the serial number on the quad and check it in comparison to one that’s for close to your year truck and motor.
From the list in here.
https://www.digitalcorvettes.com/for...ad.php?t=88376
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Old 09-05-2018, 09:03 AM   #23
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Re: Yes or no on an Edelbrock 1407

Olds carbs won't fit on a Chevy; fuel filter is in the way.
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Old 09-05-2018, 11:26 AM   #24
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Re: Yes or no on an Edelbrock 1407

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Originally Posted by geezer#99 View Post
Find the serial number on the quad and check it in comparison to one that’s for close to your year truck and motor.
From the list in here.
https://www.digitalcorvettes.com/for...ad.php?t=88376
Thanks for that link. A lot of good info there, except this "The last passenger car version of the carb appeared as an ECM-controlled carb in 1981."

That might be the case in the USA, but my carb is a M4ME came off my 84 Buick Park Avenue with the 307 Olds engine. Our 84 Pontiac Parisienne uses the same M4ME carb, but has the fuel inlet facing the side because it's on a Chev 305 engine. In Canada, the computer-controlled E4ME Q-Jet was not used (at least not in 84).

I took this carb off my 84 Buick Park Avenue and added a 90 degree fitting on the fuel inlet.
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