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Parts and Services Included in Jeep EFI Turn Key Engine:
Revitalize your 1971-1990 Jeep CJ or Wrangler YJ with Golen Engine Service’s purpose-built 4.6L carbureted stroker engine. Designed as a direct bolt-in replacement for factory 4.2L carbureted engines, this turnkey stroker delivers impressive horsepower and torque gains while maintaining the classic simplicity of carburetor technology that vintage Jeep enthusiasts demand.
The 4.6L carbureted stroker engine honors traditional Jeep engineering while incorporating modern performance enhancements. Perfect for CJ-5, CJ-7, CJ-8 Scrambler, and early Wrangler YJ models, this engine increases displacement from the original 4.2L, generating substantially more low-end torque for superior trail performance, rock crawling, and highway cruising without sacrificing the authentic driving experience.
Installation simplicity defines this carbureted stroker motor. Engineered specifically for 1971-1990 Jeep applications, it utilizes factory mounting points, timing covers, and accessory drives. The engine maintains compatibility with original carburetors, distributors, and exhaust systems, ensuring seamless integration with your classic Jeep’s existing components without complex modifications or fuel injection conversions.
Each 4.6L carbureted engine features precision-machined components, including balanced rotating assemblies, performance-ground crankshafts, forged connecting rods, and professionally-prepared cylinder heads. Built using identical processes as Golen’s racing engines, this stroker combines vintage aesthetics with modern metallurgy and machining tolerances. Every engine undergoes dyno break-in testing, ensuring optimal ring seating and bearing break-in before delivery.
Golen Engine Service provides comprehensive support for classic Jeep owners. Each carbureted stroker includes one-year unlimited mileage warranty coverage, complete installation documentation, and dedicated technical support. Contact specialists at 1-800-591-9171 for carburetor recommendations, ignition timing specifications, and installation guidance tailored to your specific CJ or YJ model.
A: The 4.6L carbureted stroker generates approximately 20-30% more torque than factory 4.2L engines, typically producing 240-270 lb-ft depending on carburetor selection and tuning. Horsepower gains range from 25-40 HP over stock. The increased displacement provides substantially better throttle response, improved hill-climbing ability, and enhanced towing capacity while maintaining the reliable, serviceable nature of carbureted fuel delivery systems.
A: Yes, the 4.6L carbureted stroker is designed for direct compatibility with factory Carter BBD, Motorcraft 2150, and Weber carburetors commonly used on 1971-1990 Jeep CJ and Wrangler YJ models. It works with original distributors, ignition systems, and intake manifolds. You can retain your existing carburetor or upgrade to performance models like the Holley 390 CFM for additional power gains.
A: This stroker engine fits all 1971-1990 Jeep models originally equipped with the AMC 258ci (4.2L) inline-six carbureted engine. Compatible vehicles include CJ-5, CJ-7, CJ-8 Scrambler, Wrangler YJ, Cherokee XJ, Wagoneer, Comanche pickup, and J-series trucks. The engine uses factory motor mounts, bell housing patterns, and accessory drive configurations for straightforward installation.
A: Beyond basic rebuilding, the 4.6L stroker increases displacement through precision boring and stroker crankshaft installation, generating significantly more torque. It features forged steel connecting rods, balanced rotating assembly, performance camshaft, professional valve job, and upgraded bearings—components rarely included in standard rebuilds. Dyno break-in testing and a one-year warranty provide reliability exceeding typical rebuild shops.
A: The 4.6L stroker operates effectively on regular 87-octane gasoline, though 89-octane is recommended for optimal performance. Initial carburetor jetting may require minor adjustments based on altitude and driving conditions. Golen Engine provides detailed tuning specifications and tech support at 603-886-3800 ext 2 to help optimize air-fuel ratios, ignition timing, and idle quality for your specific application and carburetor setup.
For Jeep enthusiasts aiming to enhance the performance of their 1971-1990 Jeep CJ & Wrangler YJ, the 4.6L Carbureted Turnkey Stroker Engine from Golen Engine Service offers a robust and reliable solution. This engine is meticulously designed to provide a significant boost in horsepower and torque, ensuring an exhilarating driving experience both on and off the road.
1971-1990 Jeep Engine Specifications:
Key Features of this Carbureted Jeep Engine:
1971-1990 Carbureted Jeep Engine Benefits:
Improve the performance of your 1971-1990 Jeep CJ or Wrangler YJ.
What Jeep models can use the 4.6L carbureted stroker engine?
The 4.6L carbureted stroker engine is specifically designed as a direct replacement for 1971-1990 Jeep CJ and Wrangler YJ models that originally came equipped with the factory carbureted 4.2L inline-six engine. This includes popular models like the CJ-5, CJ-7, CJ-8 Scrambler, and early YJ Wranglers. If your classic Jeep has a carburetor (rather than fuel injection), this turnkey stroker engine will bolt directly into place without requiring fuel system modifications or complex electrical upgrades.
How much more power does the 4.6L carbureted engine produce compared to the stock 4.2L?
The 4.6L carbureted stroker engine provides a substantial performance increase over the factory 4.2L engine. While the stock carbureted 4.2L typically produced around 112-125 horsepower and 210-220 lb-ft of torque, the 4.6L stroker delivers significantly more horsepower and torque throughout the entire RPM range. This increased displacement translates to noticeably improved acceleration, better hill-climbing ability, enhanced towing capacity, and more confident highway cruising, all while maintaining the classic carbureted simplicity that vintage Jeep owners appreciate.
Will the 4.6L carbureted engine work with my existing carburetor and ignition system?
Yes, the 4.6L carbureted stroker engine from Golen Engine Service is designed to work seamlessly with your existing carburetor setup and ignition system. As a turnkey replacement for the factory 4.2L carbureted engine, it maintains compatibility with your current fuel delivery system, eliminating the need to convert to fuel injection or purchase expensive new components. This makes the upgrade straightforward and cost-effective while preserving the original character and maintenance simplicity of your classic carbureted Jeep.
Is a carbureted 4.6L stroker engine reliable for off-roading and trail use?
Absolutely. The 4.6L carbureted stroker engine combines modern performance enhancements with proven carburetor technology that's well-suited for off-road use. Carbureted engines offer simplicity and ease of field repair, which many off-road enthusiasts prefer when venturing into remote areas. The stroker's increased torque provides excellent low-speed crawling capability for technical terrain, while the robust construction ensures reliability during demanding off-road adventures. Additionally, carbureted engines are less susceptible to certain electronic issues that can plague fuel-injected systems in harsh off-road environments.
What are the advantages of upgrading to a 4.6L stroker versus rebuilding my original 4.2L engine?
Upgrading to a 4.6L stroker engine offers several key advantages over rebuilding your factory 4.2L. First, you gain significantly more displacement (4.6L vs 4.2L), resulting in considerably more power and torque rather than simply restoring factory performance. Second, the stroker features upgraded internal components engineered to handle increased output and provide improved durability. Third, you receive a professionally assembled, dyno-tested turnkey engine backed by Golen Engine Service's warranty, eliminating guesswork and potential rebuild issues. Finally, the installation is straightforward since it's a direct bolt-in replacement that maintains your carburetor setup, giving you modern performance while preserving your classic Jeep's authentic driving experience.
Questions? Give us a call at 1-800-591-9171 or Contact Us and we’ll get in touch with you right away.