Hi Ted,

thank you for the quick response and the very helpful info. I was thinking you or someone else would respond and say it's too much carburetion for the 312 engine. I'm using the original '57 ECG aluminum intake. Is this acceptable to use with the jets you mentioned and the Lincoln carburetors? I, really want to keep the set up as stock as possible. I'm working on the Carb bases and have made vacuum ports (under the fuel inlet at the rear uses a 1/4" pipe thread) as if the Lincoln carbs were the 1956 ECZ Carbs (or the actual dual quad carb ECJ 9510 AA-AB). I, put in the balance tubes, put in the small 1/8th diam. plugs for the Right side secondarys. (I, believe it's a plug and not a tube?) I'm getting aluminum plugs made to block off and seal the hole where the spark control valve would go. Removed the brass idle tubes in the primary venturies (I, believe there called idle tubes?) Ted, I, don't mean to make this a long drawn out message :-) The job is a little bit intricate and like running through the steps that I've taken to some one more knowledgeable like yourself. Unfortunately I don't get the y-block Mag. that you mentioned. If you do come across the the power valve # that I, should be using that would be great.....I, know I have more changes to make the Lincoln's. While I'm thinking of it.....Is it necessary to have the #58 type air horns (fuel bowl cover) like the actual ecj 9510 aa-ab carbs? It's hard to describe through text but how do the larger circles on the #58 covers matter? I, believe the Lincoln's are #48's? and the same for the ECZ 1956 carbs...I, got a little bit long winded on this mssag....Lol.

Thank you you again for the info and the interest

Best Regards,

Jeff Abate

If you get the Y-Block Magazine, then issues #115 & 116 went into detail on dyno testing of the various dual quad intakes where different pairs of Lincoln Teapots were also in the mix. For the List #1094-1 carbs, the primary jets were happy at #60 and secondary jets at #82. For the List #1094-4 carbs, primary jets were #57 and secondary jets were #82. I don’t recall the power valve numbers off hand as they are also players on the primary jetting side. That information is here but currently buried.

Lorena, Texas (South of Waco)

Has anyone experimented using the '56 Lincoln carburetors as dual quads? What size jets are recommended for the primaries and secondaries? I have two Lincoln carbs that I'm currently rebuilding and modifying to dual quad status. #55's are used for the primaries in one carb. while #59's are used in the other. which ones are correct for the stock Lincoln? #96's are used in both carbs for there secondaries. I'm pretty certain that #43's are used as the primaries and #55's for the secondaires on the authentic dual quad ECJ 9510 AA or AB carbs. What sizes would work best with the Lincolns?

Jeff P.s. thanks to all for the help.....it's most appreciated