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Stock Wedge (Non-Hemi) Cylinder Head for Honda GX390 & Big Block Clone Engines
188F-11200-A GX390/420 Clone Cylinder Head
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Stock Wedge (Non-Hemi) Cylinder Head for Honda GX390 & Big Block Clone Engines

Part Number: 188F-11200-A
Online Price: $48.95
Stock Wedge (Non-Hemi) Cylinder Head – Honda GX390 & Big Block Clone Engines
Availability: In Stock.

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Description

Stock Wedge (Non-Hemi) Cylinder Head for Honda GX390 & Big Block Clone Engines


This is a bare stock replacement Wedge-style (Non-Hemi) cylinder head designed for Honda GX390 and GX390-style Big Block Clone engines, such as the Predator 420. It features the OEM-style single central bolt mounting for the valve cover and is compatible with standard valve train components.


The cylinder head is bare, meaning it does not include valves, valve springs, seals, retainers, gaskets, or studs. It is machined to accept stock 35mm intake and 31mm exhaust valves, making it a great choice for rebuilds or stock replacements.


Note: This head can be used on engines like the Wildcat 460, but those engines typically use a 4-bolt valve cover. To install this head on a Wildcat 460 or other 4-bolt-style clone, you will also need a compatible valve cover, gasket, and single-bolt valve cover hardware. However, for optimal fit and function, we recommend using the original head designed for those engines when possible.


Key Features

  • Fits most GX390, Predator 420, and other Big Block Clone engines
  • Wedge-style (Non-Hemi) design with single-bolt valve cover mount
  • Compatible with 35mm intake and 31mm exhaust valves (not included)
  • Perfect for stock rebuilds or replacement of damaged heads
  • Bare head only – no valve train or gaskets included

FAQ

Q1: What engines does this cylinder head fit?
A: This head is compatible with Honda GX390, Predator 420, Wildcat 460, and other GX390-style Big Block Clone engines that use Wedge-style (Non-Hemi) cylinder heads with a single center valve cover bolt.


Q2: What components are included with this head?
A: This is a bare cylinder head. It does not include valves, valve springs, retainers, seals, gaskets, or studs. It is machined to accept 35mm intake and 31mm exhaust valves.


Q3: Will this head work on a Wildcat 460 engine?
A: Yes, it can bolt onto a Wildcat 460. However, the Wildcat typically uses a 4-bolt valve cover, so you’ll need to purchase a compatible single-bolt valve cover, gasket, and bolt assembly. For best performance and fitment, we recommend using the original head designed for the Wildcat 460.


Q4: Is this head compatible with Hemi-style valve train components?
A: 
No. While this head may be able to swap, it’s not a direct swap and might require many additional components. This head is designed for Wedge-style (Non-Hemi) engines. It is not compatible with Hemi-style valve covers, rockers, or valves.


Q5: Is this head ready to install out of the box?
A: The head is machined and ready to accept valves and hardware but is not ready to install as-is. You’ll need to supply and install the necessary valve train components and gaskets.


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