Hurley Engine
Service Company

200 24th Street South
Birmingham, AL 35233 US
Phone: (205) 323-3136
Fax: (205) 252-9904

Our office hours are
Monday - Friday from
7.30 AM until 5.30 PM CST


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**Please note that parts deemed as "high performance" do not have a warranty.

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4.5L Stroker Engine Kit #H8799S030

Price: $3,850.00

Turn your stock 4.0L into a 4.5L Torque Monster!!!
This kit will give your 4.0L engine the low-end and mid-range torque it lacks and still have power to spare for the freeway. Ideal for towing, rock crawling or just an every day driver. Available in two over-bore sizes. 20% larger fuel injectors may be required. Top your engine off with our aluminum cylinder head for even greater power.
The conversion kit includes:

  • Stroker Crankshaft
  • Forged Pistons
  • Performance Connecting Rods with ARP rod bolts
  • Total Seal Piston Rings
  • New Main Bearings & Rod Bearings
  • Camshaft and timing set not included. You can choose the cam and timing set that best suits your needs.
  • The kit is pre-balanced and the pistons are pressed on the connecting rods. The only machine work required is a simple bore and hone. The pistons come with the domes ceramic coated and the skirts moly baked. Connecting rods are our high performance rods.
    You would be hard pressed to find a better Stroker kit!
  • NOTE: Stock valve springs must be replaced with our performance valve springs and retainers when using a camshaft over .450 lift. 1997-up engines will also have to replace the valves with the early 4.0L single keeper groove valves when using our springs and  retainers because the valve tip of the triple groove valves will not protrude enough for the rocker to contact them.


Part Number: H8799S030
Manufacturer: Hesco
Application 1: Available for all Jeep 4.0L engines in .030 oversize.
Application 2:


4.5L Stroker Engine Kit #H8799S030
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