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Ls1 Cnc Ported Cylinder Heads With Ti Valves on 2040-parts.com

US $900.00
Location:

Ormond Beach, Florida, United States

Ormond Beach, Florida, United States
Low mileage- maybe only dyno time
Brand:Chevrolet Manufacturer Part Number:799 casting

These heads are as used in the NASCAR K&N Series. All competitors must use the same heads. pistons, rods, block and crank. CNC ported by Wegner. With the spec ASA (.525 lift) cam and 10.5 to 1 compression they will support 625 hp at 7200 rpm, naturally aspirated. I will also include the Titanium Valves they are run with as well. Valves are in excellent condition. There are no valve seals,springs, retainers or keepers. These are bare ported heads with guides, seats and valves. Below is the spec sheet that is used when they set them up for competition.

NASCAR SPEC ENGINE CYLINDER HEAD SPEC DATA SHEET NASCAR CAMPING WORLD April 30, 2009  
 
Cylinder head casting number   12564799
 Intake port volume     229cc
 Exhaust port volume    84cc 
Chamber volume     64cc 
Valve guide material    powdered iron 
Valve seat material     powdered iron  
Intake valve part number    IVLS6-oeml-8-a 
Intake valve head diameter   2.00  
Intake valve length     4.960
 Intake stem diameter    .313
 Intake valve material    Coated Titanium 
Intake valve weight     68 grams  
Exhaust valve part number EVLS6-oeml-8 
Exhaust valve head diameter   1.550 
Exhaust valve length    4.965 
Exhaust stem diameter    .313 
Exhaust valve material    Coated Titanium 
Exhaust valve weight    55 grams  
Intake tip height      2.075 
Exhaust tip height     2.065 
Valve spring installed height   1.800  
Valve spring part number    NS1511ML 
Retainer part number    LS1-41-16 
Valve spring locator part number  4747 
Valve keeper part number    13098-16 
Valve seal part number    VS809    
Valve tip height is measured from valve tip to spring pad on the cylinder head with no valve spring locator.   

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