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Performance & Racing Parts > Auto Performance Parts > Engine & Components > Cylinder Heads

Ls1 Nascar Heads- Fully Assembled on 2040-parts.com

US $1,200.00
Location:

Daytona Beach, Florida, United States

Daytona Beach, Florida, United States
LS1 NASCAR Heads- Fully assembled, US $1,200.00, image 1
“One race on these heads. I would disassemble, clean and inspect first. Replacement parts available but should not need anything at all.”
Brand:GM LS1 Warranty:No Manufacturer Part Number:Casting # 12546799

This is a pair of fully assembled NASCAR K&N series cyclinder heads. On a 6.0 liter engine with 10.5 to 1 compression and a NASCAR spec camshaft they will support over 600 hp at 7000 rpm. They include Del-West Titanium valves, PSI beehive valve springs with the proper spring seats, retainers and keepers as well as valve guide seals. Ready to put on and run but if it was me I would disassemble, clean and inspect first.Service replacements are available. They are set up as outlined below.

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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