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5.7 Hemi Dual quad w/600 carbs....initial carb set up #297427
04/23/09 01:59 PM
04/23/09 01:59 PM
Joined: Jan 2003
Posts: 17,801
S.E. Michigan
ZIPPY Offline OP
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ZIPPY  Offline OP
I Live Here

Joined: Jan 2003
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S.E. Michigan
Came across this 5.7 Hemi dual quad intake and decided to try it out with a couple 600 AFBs/Edelbrocks.

They are the electric choke versions, supposed to be calibrated lean per E's site...All the choke stuff will be gone from the front carb and the vacuum holes drilled/tapped/plugged.

Been considering going with Edelbrock's "4 percent rich" calibration for the manual choke carbs as a starting point for jets and metering rods, just to make sure I'm starting with something halfway safe.

Bad idea? Not sure if I'm overthinking it...normally I'd start with stock jetting but when the mfr admits it's deliberately lean, I'm tempted to try to correct it before I even get started.

Anyone run a similar dual quad setup...what kind of headaches to expect? I can't imagine it being too far off from a 340 or 360....

Think I can get away with 1:1 linkage on a mostly stock 5.7, or will it need to be progressive linkage? It might get a stock 6.1 cam at the most, other than that no mods.

Sorry for the lousy cell phone
picture, it was the best I could do at the time...

Re: 5.7 Hemi Dual quad w/600 carbs....initial carb set up [Re: ZIPPY] #297428
04/23/09 06:47 PM
04/23/09 06:47 PM
Joined: Jun 2006
Posts: 834
Beavercreek, Ohio
OA5599 Offline
super stock
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Posts: 834
Beavercreek, Ohio
Looks sweet. I would set it up similar to a 340 and go from there...


Re: 5.7 Hemi Dual quad w/600 carbs....initial carb set up [Re: ZIPPY] #297429
04/23/09 07:19 PM
04/23/09 07:19 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
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Joined: Jun 2003
Posts: 52,972
Romeo MI
Zippy, I'd try it as is... just do a couple of short
run up's then check a couple of plugs.... looks cool

Re: 5.7 Hemi Dual quad w/600 carbs....initial carb set up [Re: MR_P_BODY] #297430
04/23/09 09:50 PM
04/23/09 09:50 PM
Joined: Jan 2003
Posts: 17,801
S.E. Michigan
ZIPPY Offline OP
I Live Here
ZIPPY  Offline OP
I Live Here

Joined: Jan 2003
Posts: 17,801
S.E. Michigan
Good point Mike, there's really no break in to worry about so if it's hideously lean I can just shut it off and fix it.

I'm probably overthinking it, but haven't worked with AFBs in a LONG time and never messed with multiple carbs....


Rich H.

Esse Quam Videri




Re: 5.7 Hemi Dual quad w/600 carbs....initial carb set up [Re: ZIPPY] #297431
04/24/09 09:19 AM
04/24/09 09:19 AM
Joined: Jan 2003
Posts: 16,122
Grand Haven, MI
patrick Offline
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patrick  Offline
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Grand Haven, MI
which 600's are they exactly? FWIW on my 360 single 4bbl engine I needed to lean the 1406 carb out about 1 step on the primary and 2 or 3 jet sizes down on the secondary.


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Re: 5.7 Hemi Dual quad w/600 carbs....initial carb set up [Re: patrick] #297432
04/25/09 10:41 AM
04/25/09 10:41 AM
Joined: Jan 2003
Posts: 17,801
S.E. Michigan
ZIPPY Offline OP
I Live Here
ZIPPY  Offline OP
I Live Here

Joined: Jan 2003
Posts: 17,801
S.E. Michigan
They're 1406's, and I've stripped all the electric choke stuff off the front carb.







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