CHAIN CAMSHAFT DRIVE
Camshaft Timing Chain L-134 Go Devil Engine
For early engines with chain drive
Replacement camshaft timing chain for the 134 CI L-head Go Devil engine with chain drive. This chain drives the camshaft from the crankshaft and is essential for correct valve timing. Suitable for early Willys MB and Ford GPW engines from WWII production.
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Application L-134 engine with chain drive |
Engine type Go Devil flathead |
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Production years 1941-1945 |
Part number 638457 |
Features
- Replacement timing chain for L-134 engine
- For engines with chain-driven camshaft
- Essential component for valve timing
- OE specification construction
- Suitable for restoration and overhaul
★ High-quality replacement camshaft timing chain to original specifications for the reliable Go Devil engine.
Application
Specifically for Willys MB (1941-1945) and Ford GPW (1941-1945) engines with chain-driven camshaft. Also suitable for very early CJ-2A models (1945-1946) up to engine number 44417. Note: from mid-1946 (engine number 44418 and higher), Willys switched to gear drive. Always check whether your engine has a chain or gear system before ordering.
Installation notes
Replacement requires removal of the timing cover at the front of the engine block. Ensure that the timing marks on the crankshaft and camshaft sprockets are correctly aligned during assembly. Crankshaft and camshaft must be in the correct position (cylinder 1 at TDC compression). Use new sprockets if the old ones show wear. Check chain tension after installation.
Compatibility
ONLY for L-134 engines with chain-driven camshaft. NOT compatible with later gear-driven engines (from mid-1946, engine number 44418+). Also not suitable for F-134 Hurricane engine or later CJ-2A, CJ-3A, CJ-3B and M38 models which have gear drive as standard. Hotchkiss M201 also has gears, not chain. Check engine block casting number: 638632 = chain engine, 641087 = gear engine.
Historical context
The early L-134 Go Devil engine used chain drive for the camshaft throughout the entire WWII production of MB and GPW jeeps. From July 1946, Willys switched to a more robust gear drive due to improved durability and lower maintenance costs.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
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This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Ford GPW | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
| CJ series | |
| Jeep CJ-2A | 1945, 1946, 1947, 1948, 1949 |
📐 Diagrams & technical drawings
From the original Technical Manual TM 10-1513 — Maintenance Manual — only for Willys MB / Ford GPW (1942)
