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Trickflow CNC Ported 225cc
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Trick Flow GenX (TM) Street/Strip CNC-Ported Cylinder Heads for GM LS EnginesCylinder Head, GenX Street/ Strip CNC, Aluminum, Assembled, 65cc Chamber, 225cc Intake Runner, GM, LS, Pair
| Cylinder Head Style: |
Assembled |
| Cylinder Head Material: |
Aluminum |
| Cylinder Head Finish: |
Natural |
| Combustion Chamber Volume (cc): |
65 or 70 |
| CNC-Machined Combustion Chamber: |
Yes |
| Intake Runner Volume (cc): |
225cc |
| Exhaust Runner Volume (cc): |
80cc |
| CNC-Machined Intake Runner: |
Yes |
| CNC-Machined Exhaust Runner: |
Yes |
| Intake Port Shape: |
Cathedral |
| Intake Port Location: |
Standard |
| Exhaust Port Shape: |
Oval |
| Exhaust Port Location: |
Standard |
| Intake Valves Included: |
Yes |
| Intake Valve Diameter (in): |
2.055 in. |
| Exhaust Valves Included: |
Yes |
| Exhaust Valve Diameter (in): |
1.575 in. |
| Valve Springs Included: |
Yes |
| Maximum Valve Lift (in): |
0.650 in. |
| Outside Diameter of Outer Spring (in): |
1.300 in. |
| Damper Spring Included: |
No |
| Number of Springs Per Valve: |
Dual |
| Retainers Included: |
Yes |
| Retainer Material: |
Titanium |
| Locks Included: |
Yes |
| Lock Style: |
7 degree |
| Valve Stem Seals Included: |
Yes |
| Valve Stem Seal Style: |
Viton® fluoroelastomer |
| Rocker Arm Studs Included: |
No |
| Rocker Arms Included: |
No |
| Rocker Arm Nuts Included: |
No |
| Guideplates Included: |
No |
| Valve Cover Mounting Style: |
Centerbolt |
| Accessory Bolt Holes Drilled: |
Yes |
| Intake Valve Angle: |
13.5 |
| Exhaust Valve Angle: |
13.5 |
| Valve Guides Included: |
Yes |
| Valve Guide Material: |
Bronze |
| Valve Seats Machined: |
Yes |
| Valve Seat Machine Style: |
3-angle |
| Valve Seat Material: |
Ductile iron |
| Steam Holes Drilled: |
No |
| Oiling Style: |
Through pushrod |
| Machined for O-Ring: |
No |
| Heat Crossover: |
No |
| Quantity: |
Sold as a pair. |
| Notes: |
Must be used with roller rocker arms. |
During the development stage, Trick Flow engineers determined that the valve angles needed to change from 15* to 13.5*. This change decreased valve shrouding,increased mid-lift airflow, and increased rocker arm-to-valve cover clearance. Testing also proved that relocating the spark plug position in the combustion chamber further enhanced combustion along with mid lift airflow and improved the integrity of the casting in the chamber area. Trick Flow also added additional material to the decks (.600") and to the rocker arm mounting pads to improve high rpm valve train stability.
The 225 LS-2 heads feature all of the same design advantages of the LS-1 with the addition of a 4.00" bore combustion chamber, 2.055" intake valve, 225cc intake runner, and a 65cc combustion chamber volume. We also offer a 70cc chamber option for forced induction applications.
Assembled heads come equipped with stainless steel intake and exhaust valves, 1.300" dual extreme pressure (150# seat 450# open) valve springs for lifts up to .650", viton seals, machined spring locators, 7 degree titanium retainers and machined steel locks.
One last important feature of this 13.5* head design is the valve drop. This head features a .155" valve drop on the intake, a stock 5.7 head with 2.00" valves has around .150". What this means is you can run this head on stock pistons with large camshafts and still have more piston to valve clearance than a stock head and also more compression.
Note: A roller tipped rocker and .100” longer than stock pushrod is required with these heads.
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Base Price: $2,349.00 Customized Price: $2,349.00 Your Kit Is Ready To Purchase!
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