This listing is for a very scarce 1932 Packard Model 905 or 906 V-12 or "Twin Six" twelve cylinder engine. Packard used this engine in the 1932 "Twin Six" Model 905 that had a 142 inch wheelbase as well as the 1932 "Twin Six" Model 906 that had a longer 147 inch wheelbase. 1932 was not a good year for many reasons and Packard produced only 311 of the shorter Model 905 and only 238 of the longer Model 906 "Twin Six" automobiles that year.A feature unique to only the 1932 "Twin Six" engine is the one piece exhaust manifold. Back in the 30's, engines tended to carbon up unlike engines today that run for hundreds of thousands of miles without removing the cylinder head. To remove the right hand cylinder head on the 1932 "Twin Six", one first had to remove the intake manifold to get the exhaust manifold off in order to remove the right hand cylinder head. For the 1933 model year and all the way through 1939, Packard switched to a two piece exhaust manifold design. That improved design added a pair of square 4 bolt flanges to the exhaust manifold above the right hand cylinder head. A mechanic then only had to remove the outer part of the exhaust manifold in order to remove the right hand cylinder head to remove the built up carbon or grind the valves. From 1933 through 1939, Packard used the same basic engine and called it simply the "Twelve". Packard used the "Twin Six" name for the first time in the fall of 1915 when it introduced it's first V-12 engine equipped automobile. That engine was produced with minor changes through 1923.
Packard then switched to building only 6 or 8 cylinder automobiles for 1924 through 1931 before beginning production of this entirely new V-12 design or "Twin Six" for 1932. This mighty power plant is a cast iron 67 degree monoblock design with a bore of 3-7/16 inches and a stroke of 4 inches. These dimensions result in a displacement of 445.5 cubic inches.
This engine has 4 main bearings, hydraulic zero lash valve lifters and a Stromberg - Duplex dual venturi downdraft carburetor. This rare carburetor is included even though it is not shown in these older photos I took when transporting this engine several years ago. I do not have the air cleaner for this engine. It will take me a few days to get this engine to where I can get more and better photos of it. In 1932 this engine was rated at 160 HP at 3,200 RPM.In 1935 the stroke was increased from 4 inches to 4-1/4 inches which increased the displacement by 27.8 cubic inches and increased the output to 175 HP at 3,200 RPM. The size and output of this fine engine remained unchanged through 1939 which was the last year that Packard produced a twelve cylinder automobile. This engine was rebuilt about 12 years ago in the Seattle area and ran only briefly for a test drive in a 1932 Packard dual cowl phaeton.
It was then put back into heated storage there for a few years before I bought it along with some more 1932 Packard items. Those items include a rather rusty 1932 Packard Model 903 Deluxe Eight convertible coupe or "Coupe Roadster" as Packard called it, a very solid 1932 Packard Model 903 Deluxe Eight sedan and some other 1932 Packard "Twin Six" parts. Both of these cars are missing their engines, transmissions, radiators, radiator shells, hoods, lamps and some lesser parts.
Those special "Twin Six" parts mentioned above include a rebuilt radiator, nice radiator shell, 2 nice head lamps, 1 nice fender lamp, a very good folding trunk rack, two chrome plated 18" wire wheels, 2 "Twin Six" reproduction hub caps and some parts for the special "Twin Six" and "Deluxe Eight front bumper that had the very distinctive harmonic balancers at both ends. I also have a 1932 Packard Model 906 "Twin Six" 147" long wheelbase chassis that includes the frame, front and rear axles, four springs, four 18" wire wheels with rusty rims, four original but rough "Twin Six" hub caps and perhaps some lesser parts. I bought this at a swap meet in Oklahoma about 12 years ago from a guy who claimed it came from Al Capone's estate in the Chicago area. I have no way to prove that claim and it really does not matter much anyway but it is possible. This chassis has rather heavy surface rust and pitting of a lot of the parts so it no doubt came from a wetter part of this country.
I have stored this engine in a clean, dry and mouse free warehouse here in Bozeman Montana since I brought if home from Washington several years ago. It still turns over fine and is in basically the same condition as it is shown in these older photos except for some light dust on it. The two intake manifold inlet holes have been covered with tape since before I bought this engine and the exhaust outlet has been plugged as well.
I left the tape in place and mounted the carburetor on the intake manifold after these photos were taken. I turned this engine over several times a year since I brought it home several years ago and it still turns over fine today.
The top of the distributor cap cover is cracked as you can see in the last photo. If one adds the 311 Model 905 "Twin Six" cars built to the 238 Model 906 "Twin Six" cars built, there were only 549 Packard "Twin Six" vehicles total built in 1932. I have no idea how many 1932 "Twin Six" cars are left today. If one is generous and assumes that 5% of them survived, that would mean that only 27 are left in all of the world today.
Of that number there have to be several of them that have newer engines in them for one reason or another. If you have one of those gorgeous pieces of automotive history that has a newer engine in it, here is your change to considerably improve the marketability and value of your gorgeous Packard. I plan to drop the price later on after I get a chance to talk with potential buyers.One photo shows a close up of the casting date (6 1 32) which is on the lower right front corner of the cylinder block. Another photo shows the serial number 900541 that is stamped on the left front corner of the block just under the cylinder head.
A very helpful enthusiast recently asked for this number and mentioned that it should fall between 900001 and 901000 which it does. If there were only 549 Packard "Twin Six" automobiles produced in 1932, then this engine which is the 541st one built would be a very late one. I suspect that very late serial number coincides very well with a cylinder block casting date of 6 1 32 which would be June 1 1932. If you have a need for this engine for your 1932 "Twin Six" project or are interested in this engine with the two vehicles or other "Twin Six" parts I mentioned above, please call me so we can work out a deal. This engine comes with a very nice, heavy duty, specially built, roll around, welded tubular steel engine stand that is not shown well in these photos.My friends or I may be able to deliver it depending on where you live and how soon you need it. I have plenty of free and reasonably secure storage here if you are planning a trip to beautiful Montana this fall or winter and would like to pick it up then. The item "1932 Packard Twin Six Engine V12 Twelve 1933 1934 1935 1936 1937 1938 Super 8" is in sale since Sunday, September 14, 2014. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Engines & Components\Complete Engines". The seller is "toysanyone" and is located in Bozeman, Montana. This item can't be shipped, the buyer must pick up the item.