PWK34 34mm Performance Slide Carburetor for Predator 420, Wildcat 460 & Honda GX390 Big Block Engines
Unlock the full potential of your Big Block Honda-clone engine with the PWK34 34mm Performance Slide Carburetor. Specifically tuned for Predator 420, Wildcat 460, Honda GX390, Honda GX420, and similar 390cc-500cc engines, this carburetor delivers exceptional throttle response, increased airflow, and precise fuel metering for high-performance mini bikes, go-karts, drag bikes, and racing applications.
Designed around a high-flow D-slide configuration, the PWK34 provides smoother airflow characteristics than traditional round-slide carburetors, resulting in improved throttle control, stronger acceleration, and easier tuning. Whether you're building a powerful cruiser, a competition go-kart, or a dedicated racing engine, the PWK34 offers the airflow capacity needed to support both mild and heavily modified engine combinations.
Enhanced Airflow with D-Slide Technology
The PWK34 features a precision-machined D-shaped slide that improves airflow velocity and fuel atomization throughout the RPM range. Compared to conventional round-slide carburetors, the D-slide design delivers:
- Faster throttle response
- Improved low and mid-range acceleration
- More stable air/fuel delivery
- Easier tuning across varying engine combinations
- Increased airflow capacity for high-performance engines
Its 34mm bore size provides ample airflow for stock-displacement engines while supporting aggressive big-valve cylinder heads, ported heads, stroker combinations, and larger displacement race builds.
Ideal Engine Combinations
The PWK34 performs best on engines with:
- Displacement: 390cc – 500cc
- Camshaft Lift: .308" and higher
- Camshaft Duration: 230° and greater
- Ignition Timing: 28°–32° BTDC
- Ported or Big-Valve Cylinder Heads
- Performance Exhaust Systems
Perfect for naturally aspirated gasoline-powered performance engines seeking maximum airflow and throttle response.
Includes Velocity Stack & Air Filter Adapter
Each carburetor includes a velocity stack/air filter adapter designed to accept standard 2.5-inch performance air filters. This allows easy integration into a wide variety of mini bike, go-kart, and racing chassis configurations while maximizing airflow into the carburetor.
Included Components
- PWK34 34mm Slide Carburetor
- Velocity Stack
- 2.5" Air Filter Adapter
- High-Flow Air Filter
Engine Compatibility
Compatible with many popular Honda-clone Big Block engines including:
- Predator 420
- Honda GX390
- Honda GX420
- Wildcat 460
- Ducar 420
- Tillotson Big Block Engines
- Clone 390cc–500cc Engines
- Stroker and Big Bore Big Block Builds
Perfect For
- Performance Mini Bikes
- Racing Go-Karts
- Drag Bikes
- Off-Road Buggies
- Oval Track Karts
- High-Performance Utility Vehicles
- Big Block Engine Swaps
- Custom Racing Engines
Tuning Information
All carburetors are affected by environmental conditions including elevation, temperature, humidity, and barometric pressure. While each PWK34 is pre-jetted and configured for general performance applications, final tuning may be required to optimize air/fuel ratios for your specific engine combination and operating conditions.
Product Features
- 34mm High-Flow Bore
- Performance D-Slide Design
- Tuned for Honda-Clone Big Block Engines
- Excellent Throttle Response
- Supports Ported and Big-Valve Heads
- Includes Velocity Stack & Air Filter
- Accepts Standard 2.5" Air Filters
- Ideal for Gasoline-Fueled Performance Engines
- Suitable for Street, Off-Road, and Racing Applications
