F/S C5R Cylinder heads, second design
 

I have one pair of C5R cylinder heads, second design, that I have on the shelf to sell.

These are 100% un-touched from GM and impossible to get.

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Bare C5R
Racing Cylinder Head

• 355-T7 'as-cast' Aluminum racing head
• Professional porting and machining of combustion chambers required
• No seats or guides
• C5R rectangle port design requires aftermarket rectangle port intake manifolds
• Designed for 2.180"/1.625" valves
• 11' valve angle
• Machined for 1.625" diameter valve springs & .500" guides
• Designed for big bore (4.100" min) LS7/C5R/LSX blocks
• 210cc 'as-cast' intake ports
• 70cc 'as-cast' exhaust ports, same as production LS6
• 30cc 'as-cast' combustion chambers
• All fasteners are metric
• Valve cover rails have O-ring groove for .125" O-ring
  Capable of over 800 horsepower!

MSRP is well over $1990 each cylinder head.

$1500 ea + shipping.

Monday bump!

If you would like, we can have these ported for your engine, inquire about finishing them for you build.