Jeep 4.6L Carbureted Crate Engine for 1971-1990 year models $9,999 - Jeep 4.6L Carbureted Crate Engine for 1971-1990 year models quantity Add to cart Categories: Jeep Engines, Jeep Turnkey Engines ENGINE SPECIFICATIONS Parts and Services Included in Jeep EFI Turn Key Engine: Dyno Break-In and Tuning Service Oil pan Oil filter Spark plugs Performance intake manifold Performance tubular stainless steel header Holley Avenger 350cfm 2bbl Carb w/electric choke HEI Distributor and Coil Kit Performance Spark Plug Wires Flowkooler High Flow Water Pump Thermostat Housing and Thermostat 1971-1990 Jeep 4.6L Carbureted Stroker Engine – Classic Performance 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. Built for Classic Jeep Applications 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. Direct Replacement for Factory 4.2L Engines 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. Racing-Quality Construction Meets Vintage Reliability 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. Complete Turnkey Solution with Expert Support 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. 1971-1990 Carbureted Jeep Engine FAQs Q1: How much power does the 4.6L carbureted stroker produce compared to the stock 4.2L? 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. Q2: Will this engine work with my existing carburetor and distributor on my 1971-1990 Jeep? 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. Q3: Which Jeep models from 1971-1990 accept this 4.6L carbureted stroker engine? 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. Q4: What makes this stroker better than rebuilding my original 4.2L carbureted engine? 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. Q5: Does the carbureted stroker require special tuning or fuel modifications? 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.