Does anyone know what the stock jet sizes were for the center and outboard carburetors.
Jet sizes for six pack
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Northwoodsbee
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This guy helped me. Seemed very knowledgeable.
ALLSTATE CARBURETOR & FUEL INJECTION
143 Brightside Avenue
Central Islip, NY 11722
Phone: 631 234-8327
Email: [email protected]
ALLSTATE CARBURETOR & FUEL INJECTION
143 Brightside Avenue
Central Islip, NY 11722
Phone: 631 234-8327
Email: [email protected]
PurpleBeeper
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Depends on year/trans
List 4392, 4393,4394. I searched online came across a jet chart by lust number and the 69 six pack carbs are not listed. Auto trans
33 IMP
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Well first, no Jets in the secondary carbs stock. Metering plates..
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33 IMP
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I have the same carbs on my car. Center carb jet in mine is a 65 (I think original jet was somewhere around 63-65) and a previous owner drilled out the metering plates to the Mopar engine book specs. I don't recall how big..... but bigger than stock.
And I have the same holley list chart, with several hundred carbs listed, but not ours.
And I have the same holley list chart, with several hundred carbs listed, but not ours.
excellent thank you
33 IMP
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I wonder what in the world used a #42 metering plate? (95 jet?!?). The big three barrel maybe ?
My #41 metering plates are not the same size on both sides. These are from my small block stroker, originally a 340. Seems like they wanted the left side richer than the right.
70sixpkrt
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Stock jet size in the center carb was 62. Outboards did not have jets.
Fuel pressure is critical in this whole thing. Something I fought for 3 years until I found that my rich condition was caused by 7.5 psi, 5 psi and float level adjusted changed everything.
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No it's not.....On my RS23V0A****** 1970 GTX (original six barrel car), I don't worry about fuel pressure, as the in line vapor seperarator, tends to relieve excess pressure. I run the liquid fuel level slightly BELOW the sight plug opening on all 3 carbs. I also stagger the end carbs to get better fuel distribution.....the plugs will show the evenness of the fuel distribution by coloration. I use the PROMAX setup with the removable Holley jets....size of jets to be determined by you......experiment .........
BOB RENTON
Oh I did experiment! I too have all of the Promax parts, except the center carb. For me, lowering the fuel pressure changed everything. Fuel bowl levels, power valve and jetting. I had gotten very discouraged after reading all of the info on how to tune a 6-pack. All of the do this, don't do that and blah blah blah disinformation, its a starting point. My spark plugs are now readable, now I can start over . I do not have a fuel vapor separator. Sometimes what works here, doesn't always work over there. I am just happy that I found out why nothing I did changed my overly rich condition.
Secondary metering plates on the outboard carburetors
Where do I find the numbers?
These are my plates.
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Unless the carbs have been converted to use the Promax metering bodies with the removable Holley jets....like I've done.....this allows stagger jetting for better mixture distribution.......just my opinion....
BOB RENTON
BTW.... you can approximate the main jet size (diameter) of the metering plate orifice by using a combination of shank diameters of letter, number and fractional drill shanks measured with calipers....just a thought.....no more fussing with tables of part numbers....
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