Understanding the Trick Flow Cylinder Head Porting Kit

The Trick Flow Cylinder Head Porting Kit is engineered for enthusiasts who demand measurable gains in airflow, combustion efficiency, and overall output. This system includes precision-machined components designed to optimize intake and exhaust port geometry, reduce turbulence, and increase volumetric efficiency. When installed correctly, these heads can unlock 50 or more additional horsepower on a properly prepared engine. The kit typically includes ported cylinder heads, high-performance valves, valve springs, retainers, seals, and head gaskets tailored to your specific engine platform.

Achieving these gains requires more than simply swapping parts. The installation process demands attention to surface preparation, torque procedures, and assembly sequencing. This guide walks through each stage so you can complete the job with confidence and avoid common mistakes that leave power on the table.

Tools and Materials Needed

Before beginning the installation, gather the following tools and supplies. Having everything within reach reduces downtime and helps maintain a clean workflow.

  • Trick Flow Cylinder Head Porting Kit (verify part number matches your engine)
  • Torque wrench capable of the specified ft-lb range for your application
  • Socket set with extensions and universal joints for hard-to-reach fasteners
  • Combination wrenches in metric and SAE sizes as required
  • Engine hoist or cherry picker for lifting heads if working without assistance
  • Safety goggles and dust mask for debris protection
  • Shop vacuum with crevice tool for cleaning bolt holes and surfaces
  • Brake cleaner or degreaser and lint-free rags
  • Assembly lubricant or engine oil for threads and gasket contact points
  • Feeler gauges for verifying valve clearance if adjusting after installation
  • Thread chasers or taps for cleaning bolt holes in the engine block
  • Plastigauge for confirming bearing clearances if removing the timing set

Preparation Steps

Proper preparation prevents problems during and after installation. Rushing this phase increases the risk of contamination, misalignment, or fastener failure.

Workspace and Vehicle Setup

Work in a clean, well-lit area with enough clearance to access both sides of the engine. If the vehicle is on jack stands, ensure it is level and stable. Disconnect the battery negative terminal to eliminate the risk of accidental starter engagement or electrical shorts while working near the engine bay.

Access and Component Removal

Remove any components that block access to the cylinder heads. This typically includes the intake manifold, exhaust manifolds or headers, valve covers, spark plugs, and any wiring harness brackets or hoses routed over the heads. Label each electrical connector and vacuum line with masking tape and a marker to simplify reassembly. Store fasteners in labeled bags or magnetic trays grouped by location.

Initial Inspection

Before removing the old heads, inspect the engine for existing issues such as coolant leaks, oil seepage, or unusual wear patterns. Note any irregularities that could indicate underlying problems like a warped deck surface or blown head gasket. Addressing these concerns during the swap saves time and prevents repeat failures.

Removing the Old Cylinder Heads

With the engine exposed, follow a systematic removal process to protect both the block and the new components.

Loosening and Removing Bolts

Use a socket and breaker bar to loosen the cylinder head bolts in the reverse of the factory torque sequence. Work in stages to avoid warping the head or distorting the block deck. Once all bolts are loose, remove them by hand and place them aside. If any bolts are severely corroded or damaged, replace them with new hardware.

Lifting the Heads

Carefully break the gasket seal by gently prying between the head and block using a flat bar or gasket scraper. Avoid scoring the deck surface. Lift the heads straight up off the dowel pins and set them on a clean workbench. If the heads are heavy or the engine is in a cramped bay, use an engine hoist with a head leveller for safe handling.

Cleaning the Block Deck

Remove all remnants of the old head gasket using a plastic scraper or a dedicated gasket removal tool. Follow up with brake cleaner and a lint-free rag to eliminate oil, coolant, and debris. Pay special attention to the bolt holes, which may contain residual fluid or carbon that can affect torque readings. Chase the threads with a tap or thread chaser if necessary.

Installing the Trick Flow Cylinder Head Porting Kit

This is the core of the project. Precision at this stage directly determines the final horsepower output and engine reliability.

Surface Preparation

Inspect the cylinder head deck surface for flatness using a straightedge and feeler gauge. The surface must be free of nicks, scratches, and warpage. Apply a thin, even coat of assembly lubricant to the head gasket sealing areas on both the block and the head. Do not use sealant on multi-layer steel gaskets unless specified by the manufacturer.

Gasket Placement

Position the new head gaskets over the dowel pins on the block deck. Confirm the gasket orientation matches the cylinder bore alignment. Some gaskets are marked "front" or "top" to prevent misorientation. Verify that all coolant passages and oil return holes line up correctly.

Head Positioning and Bolting

Lower the Trick Flow cylinder heads onto the dowel pins using the engine hoist or by hand with assistance. Ensure the heads seat evenly without shifting the gaskets. Install the cylinder head bolts finger-tight in the correct locations. Use only the bolts provided in the kit or those specified by Trick Flow, as aftermarket heads may require different lengths or washers.

Proper Torque Procedures

Incorrect torque is one of the most common causes of head gasket failure and lost power. Follow these steps to achieve accurate clamping force.

Torque Sequence

Each engine family has a specific tightening sequence that distributes clamping force evenly. Consult the Trick Flow instruction sheet or your engine service manual for the correct pattern. Typically, you start at the center bolts and work outward in a spiral or crisscross pattern.

Torque Specifications

Use a calibrated torque wrench to tighten the bolts in two or three progressive passes. For example, tighten all bolts to 30 ft-lb in sequence, then to 60 ft-lb, and finally to the final specification listed in the kit instructions. Many Trick Flow installations use torque-to-yield fasteners that require a final angle turn rather than a specific ft-lb value. Follow the supplied specifications exactly.

Heat Cycling and Retorque

After the initial installation, run the engine through several heat cycles reaching full operating temperature. Allow the engine to cool completely, then recheck the torque on each bolt. This step compensates for gasket compression and thermal expansion. Neglecting this retorque can lead to gradual loss of clamping force and eventual gasket failure.

Reassembling the Engine

With the heads secured, the remaining engine assembly must be completed carefully to avoid introducing leaks or binding.

Intake and Exhaust Components

Install the intake manifold using a new gasket set. Apply a small bead of RTV silicone at the front and rear china walls where the intake meets the block deck if required by your engine design. Install the exhaust manifolds or headers with new gaskets. Tighten all fasteners to the specified torque in sequence to prevent warping the flanges.

Valvetrain and Timing

If the Trick Flow kit includes new rocker arms, pushrods, or a camshaft, install those components according to the kit instructions. Check valve lash or adjust preload on hydraulic lifters as specified. Verify timing marks align after any camshaft changes. A degree wheel and dial indicator may be necessary for precise cam timing verification.

Electrical and Fluid Connections

Reconnect all wiring harnesses, vacuum lines, and coolant hoses that were removed earlier. Refill the cooling system with the recommended coolant mixture. Top off the engine oil if any was drained during disassembly. Check the power steering and brake booster connections if they were disturbed.

Final Checks and Testing

Before declaring the job complete, perform a systematic series of checks to confirm everything is in order.

Initial Startup

Turn the ignition key to the run position and listen for the fuel pump prime. Crank the engine in short bursts until oil pressure registers on the gauge. Once oil pressure is confirmed, start the engine and let it idle at a fast idle speed if possible. Listen for any ticking, knocking, or hissing sounds that indicate a problem.

Leak Inspection

With the engine running at operating temperature, inspect all gasket surfaces, hose connections, and drain plugs for coolant or oil leaks. Pay close attention to the head gasket seam around the perimeter of the heads. A small coolant leak at the head gasket often appears as a white residue or drip near the block deck.

Performance Validation

Once the engine is stable, take the vehicle for a careful test drive. Monitor coolant temperature, oil pressure, and any unusual vibrations. Under moderate acceleration, you should feel a noticeable increase in power delivery compared to the previous setup. If you have access to a dynamometer, schedule a tune session to optimize air-fuel ratios and ignition timing for the new cylinder heads. This tuning step is where the full 50-plus horsepower gain becomes measurable.

Maximizing Your Horsepower Gains

The Trick Flow porting kit delivers its potential when paired with complementary upgrades. A free-flowing exhaust system, a matched intake manifold, and a performance camshaft allow the heads to flow air without restriction. Upgrading the fuel injectors and fuel pump ensures the engine has enough fuel volume to support the increased airflow. Finally, a professional engine tune on a chassis dyno or engine dyno tailors the calibration to the new hardware and delivers the highest safe power output.

Many builders report gains well above the 50-horsepower threshold when combining the Trick Flow heads with a moderate camshaft upgrade and long-tube headers. Track testing and data logging help confirm the improvements and identify any remaining bottlenecks in the intake or exhaust system.

Conclusion

Installing a Trick Flow Cylinder Head Porting Kit is one of the most effective ways to add substantial horsepower to a naturally aspirated or mild forced-induction engine. The process demands careful preparation, precise torque application, and methodical assembly, but the results justify the effort. By following the steps outlined in this guide, you can complete the installation correctly and confidently enjoy the performance gains your engine is capable of delivering.

For additional technical resources, consult the official Trick Flow website for application-specific instructions, and refer to engine-building references such as EngineLabs for advanced tuning and assembly techniques. Your local machine shop can also provide deck surfacing and valve job services if the block requires additional preparation before installation.