Carburetor Selection
#2702218
09/30/19 10:59 AM
09/30/19 10:59 AM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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Looking for a little guidance on a build for a customer. Car is a 1970 340 Dart. Factory intake manifold. I'm stroking the 340 to a 416 with factory iron heads and a mild cam. Question I have is using the factory intake (because the customer wants the appearance to be as factory as possible, so that's why the factory intake) what suggestions does anyone have regarding the carburetor. It appears that the factory carburetor would have been a Carter 4935S, however I think finding one may be like hens teeth.
Thanks Darren
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: Carburetor Selection
[Re: ChrgrCuda]
#2702228
09/30/19 11:33 AM
09/30/19 11:33 AM
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Joined: Jan 2003
Posts: 20,763 A collage of whims
topside
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,763
A collage of whims
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So, by "as factory appearing as possible", do you mean stock exhaust, etc? If he wants #s matching & strictly correct, then the OEM carb would be the deal. A step away from that would be an AVS off a 383 or 440. A better but not OEM would be an Eddy AVS2: mainly because of the annular boosters and 50-years-newer casting & machining. I just put a 650CFM AVS2 (manual choke) on an otherwise #s & date-code 383 and it's a better carb than the rebuilt 4426S that was on it. Even the "satin" finish is shinier than the OEM, as are the linkages. The OEM AVS choke & peripherals can be mounted, and the Eddy logo plate removed. But the choke linkage & operation is different, haven't figured that out yet but hasn't been needed. Some tuning will be necessary either way, but once you interpret how the metering rods & jets work (the rod numbering scheme is backwards to me), it's all quite clever.
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Re: Carburetor Selection
[Re: topside]
#2702243
09/30/19 12:44 PM
09/30/19 12:44 PM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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Thanks topside. Yes, stock exhaust manifolds, however he wants trouble free so that's probably a good suggestion. Maybe my eyes were deceiving me, as the intake is dirty right now, but it appears the 1970 intake manifold might be a spreadbore pattern?
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: Carburetor Selection
[Re: ChrgrCuda]
#2702253
09/30/19 01:06 PM
09/30/19 01:06 PM
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Joined: Jan 2003
Posts: 14,496 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
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It is not a “spread bore”, but it does have smaller primary bores. I can’t recall if there is an interference issue with the primary throttle blades on that intake or not, when trying to use a larger carb, like a Carter/Ede 750/800.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Carburetor Selection
[Re: fast68plymouth]
#2702263
09/30/19 01:34 PM
09/30/19 01:34 PM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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Thanks Dwayne. I thought it looked a little weird. I'm going to go with topside's suggestion on the Edelbrock AVS and hope it fits and the throttle blades don't rub.
Thanks!
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: Carburetor Selection
[Re: Cab_Burge]
#2702277
09/30/19 02:11 PM
09/30/19 02:11 PM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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Thanks but I've had really bad experience with the last 2 Thermoquads built by a very reputable person. Not sure if it's the ethanol or what, but both of them have been failures. No doubt when it was right it was badass, however both of them exhibited horrible hot restart issues, and it was not from the fuel evaporation. One was for a customers 79 Lil Red Express and the other was for my 1978 440 Power Wagon.
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: Carburetor Selection
[Re: ChrgrCuda]
#2702581
10/01/19 11:43 AM
10/01/19 11:43 AM
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Joined: Nov 2003
Posts: 5,160 Texas
dannysbee
master
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master
Joined: Nov 2003
Posts: 5,160
Texas
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If you have the non spreadbore intake I would use the 440 Avs. We ran mid 12’s with one on a 451 CI low block. Worked/Vanke stock intake, 906 heads and factory exhaust manifolds. This was in a 3900 lbs Super Bee. Good luck.
Getting old just means you were smarter than some and luckier than others.
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Re: Carburetor Selection
[Re: dannysbee]
#2702643
10/01/19 02:30 PM
10/01/19 02:30 PM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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Thanks DannysBee. I think I am going to go with the Edelbrock AVS2 750. It won't stick out with the factory pie tin air cleaner on it I don't think.
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: Carburetor Selection
[Re: ChrgrCuda]
#2702767
10/01/19 09:13 PM
10/01/19 09:13 PM
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Joined: Nov 2003
Posts: 5,160 Texas
dannysbee
master
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master
Joined: Nov 2003
Posts: 5,160
Texas
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Thanks DannysBee. I think I am going to go with the Edelbrock AVS2 750. It won't stick out with the factory pie tin air cleaner on it I don't think. I’m going to use two of the 650 AVS2’s on my cross ram. I’m going to use the throttle arms off 3705 AFB’s to keep all the ratios correct on the linkages.
Getting old just means you were smarter than some and luckier than others.
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