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Celebrating 250 Years of American Freedom, All Year Long! More Horsepower. More Burnouts.
Celebrating 250 Years of American Freedom. More Horsepower. More Burnouts.

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Availability: Available to order

PRC 265cc LS7 CNC-Ported 6-Bolt Cylinder Heads

Original price $3,999.99 - Original price $3,999.99
Original price
$3,999.99
$3,999.99 - $3,999.99
Current price $3,999.99

Fully assembled PRC 265cc CNC-ported LS7 cylinder heads for high-output naturally aspirated and power-adder combinations.

  • 265cc CNC intake runners
  • 70cc chambers
  • 12-degree valve angle
  • 2.205-inch titanium intake valves
  • 1.610-inch stainless exhaust valves
  • TSP .660-inch PAC dual springs with titanium retainers
  • CHE bronze guides
  • Six-bolt casting compatible with standard four-bolt GM blocks

Fitment: LS7-port engines with a minimum 4.125-inch bore. Compatible with standard GM four-bolt and aftermarket LSX/RHS six-bolt blocks. Requires LS7-style intake, rocker, and related components.

Processing & Shipping Overview

Processing occurs before shipping.

Most in-stock items typically process within 2–3 business days before shipment or pickup. Expedited shipping options affect transit time after an order ships and do not speed up processing.

Made-to-order, special-order, vendor drop-ship, and freight items require additional processing time before shipping. Any extended lead times will be noted on the product page when applicable.

For the most up-to-date order status or lead time questions, please contact sales@smgspeed.com or use live chat during business hours.



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