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COMP Cams K68-231-4 Xtreme Energy 4×4 Hyd. Camshaft Kit, AMC Jeep/L6
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- ISPM 15 heat-treated Euro palletized & weatherproof shrink-wrapped
- Insured European road freight delivery with hydraulic tail-lift service
- Dispatches in 1–2 business days from our UK & European Logistics Centre
- Transit typically 1–3 business days (UK) / 3–6 business days (Continental Europe)
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
The COMP Cams K68-231-4 Xtreme Energy 4x4 kit is a hydraulic flat-tappet camshaft built for AMC 199-258 cubic-inch and Jeep 232-258 cubic-inch inline-six engines, with COMP's application range running 1964 through 1997. It is aimed at low- and mid-range pull for towing, off-road driving and daily use rather than a high-rpm powerband.
Specs that matter for this swap
At .050-inch lift, duration runs 206 degrees intake and 214 exhaust, on a 111-degree lobe separation angle, with an 800 to 5,000 rpm operating window. Valve lift with the stock rocker ratio is 0.462 inch intake and 0.485 inch exhaust. This camshaft is not compatible with fuel-injected setups; it is built for carbureted inline sixes only, so confirm your induction system before ordering.
What ships in the kit
Along with the camshaft itself, the kit includes matched hydraulic flat-tappet lifters, valve springs, retainers, locks, valve stem seals, a timing chain and gears, and assembly lubricant. Rocker arms, pushrods and gaskets are not part of the package, so budget for those separately if your rebuild needs them. The valve springs supplied are rated for this cam, meaning no separate spring upgrade is required.
Common questions
Will this work with factory exhaust manifolds? It is designed to work with common restrictive factory and OEM exhaust manifolds, so a header swap is not required.
Does it need an external ignition box? No external ignition control box is required for this camshaft.
Specifications
| Feature | Details |
|---|---|
| Brand | COMP Cams |
| Manufacturer’s Part # | K68-231-4 |
| Product Type | Hydraulic Flat Tappet Camshaft Kit |
| Application | AMC 199-258 CI & Jeep 232-258 CI (1964-1997) |
| Camshaft Type | Hydraulic Flat Tappet |
| Intake Duration (@.050″) | 206° |
| Exhaust Duration (@.050″) | 214° |
| Lobe Separation Angle | 111° |
| RPM Range | 800 to 5000 RPM |
| Intake Valve Lift w/ Rocker Arm Ratio | 0.462″ |
| Exhaust Valve Lift w/ Rocker Arm Ratio | 0.485″ |
| Valve Springs Required? | No (Included in Kit) |
| External Ignition Box Required? | No |
| Timing Chain & Gears Included? | Yes |
| Lifters Included? | Yes |
| Valve Stem Seals Included? | Yes |
| Pushrods Included? | No |
| Rocker Arms Included? | No |
| Gaskets Included? | No |
KEY SPECS | |
|---|---|
| MFG. Part # | K68-231-4 |
| Brand | COMP Cams |
| Camshaft Type | Hydraulic Flat Tappet |
| Intake Duration (.050″ Lift) | 206 |
| Exhaust Duration (.050″ Lift) | 214 |
| RPM Range | 800 to 5000 |
| Lobe Separation | 111 ° |
| Lifter Type | Hydraulic Flat Tappet |
GENERAL | |
| Intake Valve Lift w/ Rocker Arm Ratio | 0.462″ |
| Exhaust Valve Lift w/ Rocker Arm Ratio | 0.485″ |
| Sold in Quantity | Kit |
| Intake Duration | 250 |
| Exhaust Duration | 258 |
| GTIN Code | 036584039945 |
| Grind Number | A6 X4 250H-11 |
| External Ignition Box Required | No |
| Valve Springs Required | No |
| Valve Spring Included | Yes |
| Lifters Included | Yes |
| Retainers Included | Yes |
| Locks Included | Yes |
| Valve Stem Seals Included | Yes |
| Timing Chain and Gears Included | Yes |
| Assembly Lubricant Included | Yes |
| Pushrods Included | |
| Rocker Arms Included | No |
| Gaskets Included | No |
Startup & Installation Checklist
- Inspect all external gaskets, seals, spark plugs and timing components prior to installation.
- Refill engine oil, transmission gear oil and coolant to manufacturer-specified capacities before initial cranking.
- Prime the lubrication system and verify ECU wiring pinouts, sensors, and ground connections.
- Our 2-year warranty covers internal lubricated components, cylinder heads and engine block from delivery, in addition to your statutory rights.
Full terms: 2-year warranty · returns