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46-53 CJ-3A

Rebuilt Long Block Engine
Fits: Jeep & Willys with 4-134 L engine (gear driven)

Rebuilt Long Block 4-134 L Engine

These 4-134 L head chain driven motors are rebuilt here in the USA.


Features: Thoroughly cleaned and hot tanked. The head, all hardware and sheet metal components (timing cover, etc.) are media blasted. The block and head have been checked for cracks (magnafluxed and pressure tested). Hardened seats have been installed on exhaust valves. Valves have been re-machined or replaced, depending on the condition of the original, and all valve springs have been replaced. The camshaft is an original (re-machined), or has been replaced with new. Lifters have been re-machined or replaced.

The block is bored oversize only enough to clean taper (to preserve as much material as possible). Final honing on the block is done with plateau hone to create the absolute best finish possible with an automatic cylinder hone (Sunnen). The deck surface of the block has been checked and re-machined (if necessary). A wet stone grinder is used to produce the best finish possible. The surface of the head is also checked and re-machined (always) with a wet stone grinder. The crankshaft has been re-machined, and the block line bore has been checked and re-machined (if necessary). Connecting rods are checked for out-of-round and re-machined. The final assembly is done in a climate-controlled, clean assembly room, free of dirt and debris.

After final assembly, the oil system is pressurized with 40 lbs. and the engine is rotated to ensure that the engine is primed properly. Finally, the engine is smoke-tested (while slowly rotating by hand) to verify that there are no gasket leaks prior to shipping.

Top quality, name brand parts are used for everything inside our engines, including the following:

Gaskets - Fel Pro
Oil Pump - Melling
Camshaft - NOS or Melling
Valve Springs - SB International (SBi)
Valves - SB International
Pistons - Sealed Power (Federal Mogul)
Rings - Hastings, Moly
Rod Bearings - Clevite 77
Main Bearings - Clevite 77
Cam Bearing - Durabond
Timing Components - PBM/Erson

Our engines come with an Industry Best 3-Year Unlimited Mileage Warranty. Should there be any warranty claims, a contact phone number is provided on the warranty card shipped with the engine. This covers workmanship and parts, but does not cover things such as overheating due to a bad radiator, etc.

NOTE: A core is required which we need to pick up within 10 days of receipt of the engine. It needs to be on a strapped down on a palate for pickup. We will cover the cost for the pickup of your old core. Sold less flywheel. For any questions about this part, call us Toll Free: 1-888-648-4923.

4-134 L engine

41-45 MB
41-45 GPW
46-49 CJ-2A
49-53 CJ-3A
50-52 M38
46-49 Truck
46-49 Station Wagon
48-49 Jeepster

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Kaiser Willys supplies new and used willys jeep parts and accessories for restoration including Willys Jeep, CJ-2A, CJ-3A, CJ-3B,
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