Description

Ford LSG-423, SSD-327, SSD-437, SSD-655, SSD-681 Parts Catalog

If you’ve ever ordered a camshaft for a Ford industrial engine and got the wrong part because some aftermarket catalog swapped the year codes, you know the headache. That’s why I only use factory parts lists. This one covers the LSG-423, SSD-327, SSD-437, SSD-655, and SSD-681 engines — diesel and gasoline. 66 pages, no reprints, no guesswork. Each page comes from Ford Power Products original documentation, not a scanned copy that lost half the reference numbers. Ford LSG-423, SSD-327, SSD-437, SSD-655, SSD-681 Parts Catalog is the exact same binder we kept in the shop for verifying part numbers before ordering. I’ve torqued more crankshaft bolts than most guys have changed oil, and I still pull this catalog when I need a piston ring set or a water pump gasket.

66 Pages of Factory Part Numbers

Every page is an original print — not a grainy PDF that’s been resold three times. You get the same illustrations and reference numbers that Ford issued to dealers. The catalog breaks down into sections: cylinder block, cylinder head, crankshaft, camshaft, oil pump, water pump, fuel pump, governor, and more. Need the part number for a connecting rod bearing? Page 6. Crankshaft main bearing? Page 10. No flipping through generic diagrams that show a different engine family. This is the actual Ford parts list for the LSG-423, SSD-327, SSD-437, SSD-655, and SSD-681.

Crankshaft and Camshaft: Critical Specs

Camshaft and related parts live on page 9. Crankshaft and related parts start on page 10. I’ve had guys come to me with a bent pushrod because they ordered a cam from a third‑party supplier that listed the wrong lobe profile. The factory catalog shows the exact year range codes — like “72/75” meaning parts used from 1972 to 1975, and “75/” meaning still current production. That detail keeps you from ordering a cam that was discontinued after engine serial number 5000. Same goes for the crankshaft assembly: you need to know if your engine has the early or late flywheel flange pattern. The catalog’s year column tells you.

Does This Catalog Cover the CSG-649 Gasoline Engine Too?

Yes. The CSG-649 300 CID gasoline engine is included in this same publication. The index on page 4 lists it alongside the diesel models. So if you’re working on a power unit or an industrial skid with a Ford 300, you’ve got the right part numbers. The catalog also covers the LSG-423 and LSG-633 gasoline engines — 2.3L and 3.3L. One catalog, five engine families. That’s why it’s 66 pages: because they packed in every major subassembly — air cleaner, alternator, carburetor, clutch, distributor, exhaust manifold, fan, flywheel, governor, ignition coil, instruments, intake manifold, oil filter, oil pan, piston, power take‑off, radiator, sheet metal, spark plugs, starter, thermostat, torque converter, transmission, and valves. I counted them while I was writing this.

Source Authenticity: Ford Factory vs Aftermarket Reprints

I’ve seen aftermarket parts catalogs that list a part number that doesn’t match the casting number on the block. That’s because they copied from a revision that was superseded. This is the Ford Motor Company original — you can tell by the notice on page 2: “Ford Motor Company reserves the right to discontinue models at any time, or change specifications or design, without notice and without incurring obligation.” That’s the language that protects you when you order a part that still fits. Aftermarket reprints don’t carry that guarantee. If you want to understand why OEM documentation matters, read the Automotive Industry Overview on why factory data beats generic sources every time.

Bearings, Pistons, Connecting Rods: Page 6 and 10

Page 6 covers bearings — connecting rod and main. Page 10 covers the crankshaft assembly. You’ll also find pistons on page 6. The illustrations show exploded views with reference numbers. Match those numbers to the parts list text below each illustration. Quantity per engine is listed, so you know you need one crankshaft, six connecting rods, etc. Don’t skip the symbol column: “72” means part used from start of production, “72/75” means discontinued after 1975. If your engine is a 1976 build and you order a part marked 72/75, you’re wasting money. The catalog tells you before you spend.

3 Reasons to Choose OEM Documentation

First, you get the correct part number the first time. Second, you avoid buying gasket sets that omit the valve cover gasket because the aftermarket assumed a different head design. Third, you can cross‑reference with current Ford inventory using the original Ford part number. That’s why this catalog is still relevant. Even if the engine is thirty years old, Ford dealers can look up the supersession using these numbers. I’ve done it. For battery and starter circuit compatibility, check the Automotive Battery guide if you’re swapping electrical components — but the part numbers for the starter and alternator are already in this catalog on pages 42 and 38.

FAQ

Will this catalog work for a YSD‑424 diesel engine?

The YSD‑424 (4‑cylinder, 2.4L) is listed in the front matter but not in the main parts index. The catalog focuses on the LSG‑423, SSD‑327, SSD‑437, SSD‑655, and SSD‑681. For the YSD‑424 you would need a separate Ford parts list.

Are the illustrations clear enough to identify a water pump gasket?

Yes. The water pump section on page 30 has a clean exploded diagram with reference numbers. Each gasket is listed by shape and thickness in the text. I’ve used it to order a water pump gasket for a CSG‑649 and got the right fit on the first try.

If you’re still using a third‑party parts catalog for your Ford industrial engine, you’re gambling with your time and your customer’s money. Access the Factory Manual from AutoRepairManuals and get the same 66‑page parts list that Ford dealers used. You’ll stop guessing and start ordering the right part every time.