Hot Rods Packard Straight Eight 3x2 Setup ID Help!

So I grabbed this at Hershey. Supposively came off a 1942 Packard Straight 8 engine. Very cool. Aftermarket with three Stromberg Aerotype carburetors. Very elaborate and ornate manfold with very strange linkage setup. Can anyone ID this piece?




-Matt

 

Weird! looks like the secondary carbs were controlled hydraulically while the primary along with the extra shafts under the secondaries had mechanical linkage.

 

Yeah man its a crazy piece. I am still trying to figure it out.

 

Some kind of vacuum secondaries?

 

Cool,vac ends and full adjustible highspeed jets in all carbs

 

could it be... PT boat speed parts?????

 

The carb on a Packard PT boat engine is about the size of a small milk crate.

 

Anyone else with any suggestions of what this is?

 

That thing is crazy lookin....Iv never seen anything like it before

 

I would be interested to know the stamped number looking straight down on the edge of each carburetor airhorn.

Jon.

 

Jon, There are no numbers that I can see stamped on these. Where would I look again?

-Matt

 

Way too cool. I'd have paid good money just put it on the shelf and look at it.

So fess up. How much?

jack vnes

 

That intake setup is unique for sure.

Exactly, PT Boats used 3x 2500 series Packard V-12's rated from 1200 to 1850 HP. Here is a pic of an early 3A-2500 (1200 Hp from 2500 cubic inches). This is the aircraft version, the marine version was the 3M-2500.

 

that is crazy looking. I was going to suggest maybe it was used on a personal watercraft of some kind.

 

The extra shafts...a guess: I think this is somehow related to the design used on some dual carb Buicks, actually an air-valve secondary design. On the buick, The secondary throttle opened mechanically but got air only when the air valve (flap restrained a bit by a weight) was pulled open by adequate air flow.
There is a LOT more going on in that picture than in the Buick setup, but I think somehow those are air valves for the secondaries meant to keep the thing from lean bog.

 

Matt - these appear from the pictures to have started life as model AAV-26 carbs (4 bolt pattern - size 2 + removed choke housings).

Stromberg stamped the identification number on the airhorns on these units.

Note that the airhorn is fastened to the bowl with 8 screws; 4 in front and 4 in back. The stamped numbers (recessed, not raised) should be stamped in the top along one of the sides (looking straight down) about the same distance from the edge as the screw holes front and back.

Stromberg "coded" these stampings in the format ccc-nnnm where ccc is 1, 2 or 3 digits representing the customer, nnn is 1, 2 or 3 digits representing the sequential number of carburetor sold to that customer, and m if present is a 1 letter code representing modification level.

Examples:

205-14B - 205 (Cadillac) 14 (the 14th different sale to Cadillac) B (the carburetor has 2 engineering changes.

10-40E - 10 (Packard) 40 (the 40th different sale to Packard) E (the carburetor has 5 engineering changes).

Jon.

 

Hot Rod Packard might have some info? He's the inline 8 Packard guru here on the Hamb. That is one cool looking setup.

 

That set up looks "Fast" just sitting there....!
Great find...
Cheers............

 

Carbking... I just checked and two of the carburetors are stamped 41-15 and the other is stamped 41-13. There is nothing else stamped around them at all.

-Matt

 

wow, I love that set up, restore it and put it in your living room.

 

Anymore ideas from anyone? I would really like to see what it was originally for or who made it.

-Matt