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Carb change for cruise night car

64plybelvwgn

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Hi,
I purchased a "barn find" from a senior gentlemen who knew nothing of the details of the car - a 65 Belvedere with a 70 440. From what I can determine, was originally a 383 , 4 spd and now it's a 440 with a/t, 3:55, sure grip. Someone may have tried to make it into a drag car in the 80's or 90's. It has a era - specific Mallory ignition with a Holley 750cfm from what I can get off the listing number. It has no choke and mechanical secondaries. Might have been fine once upon a time...but not very streetable. Also claimed to have an old Mopar " purple " cam, but unless I start digging into it, I don't know the spec's on it, though I do believe someone changes the convertor to one with a high stall and modified the valve body, though still a straight pattern. There should be an attached pic of the Holley that's now on there, on an Eddy RPM Performer.
I was thinking of going to a 750/770 Holley Street Avenger with an electric choke and vacuum secondaries, or the 750 that Summit offers, which I believe is just a re-branded Holley. I've had a few of Summit's 650 cfm carbs and they worked pretty much right out of the box.
I'm not going to race the car, just cruise nights ( I'm an old senior ) , though may like to " light'em up ", once in a while, so I do want the secondaries to open.
20160918_100128.jpg

Any and all comments and recommendations would be sincerely appreciated .
 
I'm running a Quickfuel 750, no choke with mechanical secondaries and it's one of the best mannered carbs I've ever had. I'd at least clean it out if it has been sitting and give it a try if you haven't already..... mine starts easily in the 20's so don't think not having a choke is a big problem.

If you do buy a new carb I'd be interested in yours if your selling it. Good luck
 
I would go with the street avenger. They usually perform well out of the box and the street avenger makes secondary spring swaps a breeze if needed.
 
To make the electric choke work properly you will need it wired to a 12 volt power source when the ignition is on.
 
I'm running a Quickfuel 750, no choke with mechanical secondaries and it's one of the best mannered carbs I've ever had. I'd at least clean it out if it has been sitting and give it a try if you haven't already..... mine starts easily in the 20's so don't think not having a choke is a big problem.

If you do buy a new carb I'd be interested in yours if your selling it. Good luck
...Thank you for the quick reply. I'll try a thorough cleaning first. If I do decide to swap the present carb, I'll let you know if I decide to sell the old setup. Ted
 
I would go with the street avenger. They usually perform well out of the box and the street avenger makes secondary spring swaps a breeze if needed.

Thank you. I am going to seriously consider the Street Avenger .
 
To make the electric choke work properly you will need it wired to a 12 volt power source when the ignition is on.

....Understood. Thank you for your reply. Ted
 
Take caution, my supplier said after being bought by Holley Quickfuel went to crap. They are... were great carbs but if going that route I'd look for one that pre dates the buyout. My Quickfuel is the best carb I've owned to date.
 
If you go with any of the above choices I believe you'll have a big smile on your face(especially 'lewtots' choice)
 
I have a Street Avenger sitting on the shelf. 770cfm. Was a great carb! Just decided to go EFI instead. That's what I'd run again for a street car.
 
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