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DART Pro 1 LSX-225 Cylinder Heads

  • Bare Casting
  • Deck View
  • Exhaust Side
  • Intake Side
  • "As Cast" Chamber
  • LSX Dual Valve Spring Kit
  • LSX Dual Valve Spring Kit
  • OPTIONAL PAC Racing Dual Spring kit
Your Price:
$2,179.99 (You save $70.00)
DART-LS1 225
70.00 LBS
Calculated at checkout

Product Description

DART Pro 1 LSX 225 "As Cast" Cylinder Heads

These Pro-1 LS series cylinder heads are cast from the same virgin 355-T6 aircraft alloy that is used in Dart Pro Stock heads. The LSx cathedral port style heads come standard with Dart's famous high flowing "as cast" intake runners, fast burn combustion chambers and efficient exhaust ports. Standard fifteen degree valve angle and spacing is retained for bolt-on compatibility. FlowTech prepped heads feature hand finished and bowl blended throats and competition, multi-angle valve job. Manganese bronze valve guides are used for long life and hardened valve seats provide durability with unleaded fuels.

DART-FTI Prepped Pro-1 Cylinder Heads Feature:

"As Cast" 225cc Intake Port Volume
355-T6 Casting with 15* Valve Angle
“As Cast” 62 CC Chamber Volume
2.050” x 8mm Stainless Intake Valves
1.600” x 8mm Stainless Exhaust Valves
PAC Racing Dual Valve Spring Package
Chromemoly Steel Retainers
Hardened ”Bead-Lock” Style Valve Locks
Steel Shell Viton Valve Seals
Serdi Competition Multi-angle Valve Job
Blended Valve Pockets
Diamond Honed Valve Guides
Flat Milled for MLS Gasket Usage
313/214 CFM at .600” – 3.900" Bore
FTI Prepped and Assembled to "RACE READY" form

Flat Mill Decks to 58cc Chambers
PAC Racing 1207 Valve Spring Upgrade
PAC Racing 1521 Valve Spring Upgrade
Hollow Stem Intake Valves

- Premium alloy virgin 355-T61 aerospace aluminum for superior strength & intengrity.
- Extra thicks port walls provide additional material for serious porting.
- Additional material above the ports accommodates valvetrain upgrades.
- Standard multi-angle intake, radiused exhaust seats & CNC machined bowls enhance flow.
- Manganese bronze valve guides & interlocking hardened seats ensure long term reliability.
- Racing inspired combustion chamber improves flame propagation and increases air flow.
- Intake valve diameters 2.050 inch valves for 225cc intake runner volume.
- Optimized 85cc exhaust ports are 15cc larger than stock
- Large diameter 1.600 inch exhaust valves scavenge the cylinders quickly.
- OEM valve angle & spacing retained allowing the use of off the shelf pistons & valvetrain.
- 5-axis CNC bowl blended for optimal flow characteristics.

- PRICED PER PAIR - individual heads available by request.



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