BTR CVH LS3 58cc CNC Ported 6-Bolt Cylinder Head - Assembled - Each
BTR canted-valve LS3-style cylinder head with a 58cc combustion chamber, 260cc CNC-ported intake runner and 6-bolt configuration. Sold individually.
- Assembled with LT1-type 2.125-inch intake and 1.590-inch exhaust valves and BTR .660-inch Platinum valve springs.
- LS3-style ports; minimum 3.820-inch bore.
- Uses straight LS1-style pedestal rocker arms and bolts, LS-style valve covers and Gen V LT-style long-reach spark plugs.
- 11-degree intake / 13-degree exhaust valve angles with 5-degree / 3-degree cant; .750-inch deck.
Installation: The 58cc chamber provides approximately .035 inch less piston-to-valve clearance than the standard 64cc CVH3. Verify all engine clearances, pushrod length, bracket and manifold fitment before assembly. C5/C6 alternator brackets require minor clearancing. Coolant end ports are -12 ORB.
Manufacturer currently lists this head on backorder. Contact SMGspeed for current availability. Manufacturer photos may differ from the actual product.
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.