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cnc ported 243 ls6/ls2 heads

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Old 01-31-2015, 09:15 PM
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Default cnc ported 243 ls6/ls2 heads

Category: Accessories
Price: $950
Part Fits: 93-02 Chevrolet Camaro, 04-06 Pontiac GTO, 04+ Cadillac CTS-V, 67-92 Chevrolet Camaro, 67-92 Pontiac Firebird
Location (State): OR
Item Condition: Brand New
Shipping Information: Item Can be Shipped
Engine: LS1/LS6
LS Engine?: Fits LS Engine

I have a set of fresh LS6 / LS2 243 casting heads that have been CNC ported. they have a fresh 3 angle valve job, pressure tested, vaccum tested, PCD milled, tip heights set to factory length, these heads are ready to bolt on and go. need them gone! these are bolt on horsepower for your C5 or C6 corvette, LS1 Camaro or firebird, or GTO

fresh from the machine shop! not even bolted on!

503-866-1711 call or text
Attached Thumbnails cnc ported 243 ls6/ls2 heads-photo-1.jpg   cnc ported 243 ls6/ls2 heads-photo-2.jpg  

Last edited by charlie6178; 02-05-2015 at 10:01 PM. Reason: Price drop
Old 01-31-2015, 09:18 PM
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How much were they milled? Chamber cc's? Are the springs stock replacements? Assuming no flow numbers?
Old 01-31-2015, 10:04 PM
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I was told they are prc 2.5's and it looks like them port work wise, but if they are, they are early versions, before they engraved prc on the top. No flow numbers, I surfaced them .015" and they are stock LS6 springs.
Old 01-31-2015, 11:05 PM
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Are you able to confirm chamber size? Very interested but need to know I won't have ptv clearance issues
Old 01-31-2015, 11:53 PM
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Default cnc ported 243 ls6/ls2 heads

New or rebuilt?
2.00 LS6 Hollow stem intake valves or the PRC 2.5 Manley 2.02 stainless?
1.55 LS6 Sodium filled exhaust valves or the PRC 2.5 Manley 1.57 stainless?
Stock LS6 springs or the PRC 2.5 dual springs?
65cc or 62 cc?

George
07 CTS-V
TX
Old 02-01-2015, 03:29 PM
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The heads are 4.722 thickness, and have some blending done around the plug area, but I'm not sure what the CC's are, and I'm not gonna pay a machine shop to CC them to sell. They are factory ls6 valves and springs
Old 02-03-2015, 06:13 PM
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Bump... Price drop $1000
Old 02-03-2015, 08:37 PM
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You know cc'ing them yourself, is pretty easy. All you need is a little syringe and a plate. Check out you tube if you want to learn how, just adding this to help you out. GLWS and a free bump.
Old 02-04-2015, 11:29 PM
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Bump....
Old 02-05-2015, 09:40 PM
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Bump....
Old 02-05-2015, 09:42 PM
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$950 bump willing to ship
Old 03-16-2015, 01:56 PM
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whats the cc of the head
Old 03-16-2015, 06:06 PM
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So much want. Worried about PTV clearance though with my .626 lift and 111 lsa
Old 04-10-2015, 09:33 AM
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Any pics of the intake side? To see how well the porting is.
Old 04-10-2015, 10:06 AM
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I would be very interested as well but it's kinda hard to buy heads if you don't know chamber volume.
Old 04-10-2015, 12:52 PM
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Stock 243's are 64.45 cc so it's about 1cc for every .0065 milled so at .015 that's about 2.3cc so the new chamber is 62.15cc. Your welcome



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