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09-11-2015, 10:12 AM
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#1 |
 
Drives: 2013 Camaro SS 1LE Join Date: Oct 2014
Location: earth
Posts: 288
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Shave heads with night fury cam
Heads coming off this winter to get ported. How much are you guys cutting off the heads and not have to fly cut? Running 93 octane.
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09-11-2015, 11:27 AM
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#2 |
     
Drives: 2013 AGM 1SS/RS LS3 Join Date: Mar 2011
Location: Cedar Falls, Iowa
Posts: 1,581
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I can't speak from experience about the heads part. I do know that when we checked PTV on my car I only had .080" on the intake side.
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2013 Camaro 1SS/RS - Ashen Gray Metallic
| LS3 | CAI Inductions, Inc Intake | Vmax Ported Throttle Body | Dynatech 1.875" Long Tube Headers | Apex Scoop & Washer Bottle Relocation | Lethal Racing Night Fury Cam | BTR 7.400" Push Rods |LS2 Dampener | Melling 10296 Oil Pump | IWIS Chain | BTR .660" Dual Valve Springs | BTR Trunion Upgrade Kit | Lethal Racing Tuned | Anvil Notch Spoiler | BMR Split Drop Springs | Eaton TrueTrac | GM 3.91 Gears | LPW Diff Cover | Rohana RF2 275/40 20x10F 315/35 20x11R | BMR Polyurethane Motor Mounts  |
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09-11-2015, 11:36 AM
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#3 |
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Drives: Camaro Join Date: Apr 2009
Location: Texas
Posts: 1,670
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We do a custom cnc valve job & can deck the heads .015" and keep stock p/v with the PRC custom cnc porting & cnc valve job. Power gains from porting & milling is roughly 25-30hp.
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09-11-2015, 11:45 AM
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#4 |
   
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.080 is over twice what u need on the intake side when using check springs.
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11-06-2015, 08:26 PM
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#5 |
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Devilraddoc
Drives: Camaro SS 2010 Join Date: Aug 2015
Location: Wichita KS
Posts: 5
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p/v
Would you have to fly cut PRC LS3 Aftermarket 6-Bolt 255cc CNC Cylinder Heads with night fury cam?
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11-07-2015, 02:49 AM
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#6 |
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Drives: 2015 2SS/RS/1LE Join Date: Feb 2015
Location: Tucson
Posts: 866
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Absolutely not. In fact, you should be able to mill them to 65cc chambers without issue
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2015 SS/RS/1LE
HSA delete, VMAX throttle body, CAI inc. Intake, PRC255 heads, BTR 660 springs, BTR cryo-treated rockers, PAT G 232/240 .654/.626 110+2, johnson 2110's, Manton 502 pushrods, C5R, Melling high volume/high pressure, Powerbond 25% underdrive pulley, Proform covers, Kooks stepped headers, catless mids, Doug Thorley exhaust. 512rwhp, 446rwtq on a mustang dyno, tuned by Cunningham motorsports.  |
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11-07-2015, 03:06 AM
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#7 | |
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Drives: 2015 2SS/RS/1LE Join Date: Feb 2015
Location: Tucson
Posts: 866
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Quote:
If you say that's twice what I need then that instills confidence in my setup in my sig. I'm at .075 on intake with 65cc chambers on my prc heads. With .035-.038 preload on my lifters I would have to have a serious overspeed to smack valves...
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2015 SS/RS/1LE
HSA delete, VMAX throttle body, CAI inc. Intake, PRC255 heads, BTR 660 springs, BTR cryo-treated rockers, PAT G 232/240 .654/.626 110+2, johnson 2110's, Manton 502 pushrods, C5R, Melling high volume/high pressure, Powerbond 25% underdrive pulley, Proform covers, Kooks stepped headers, catless mids, Doug Thorley exhaust. 512rwhp, 446rwtq on a mustang dyno, tuned by Cunningham motorsports. |
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11-07-2015, 10:30 PM
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#8 |
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Devilraddoc
Drives: Camaro SS 2010 Join Date: Aug 2015
Location: Wichita KS
Posts: 5
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How about 68cc with night fury cam...I believe that's what my PRC heads are at
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11-07-2015, 10:52 PM
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#9 |
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Drives: 2015 2SS/RS/1LE Join Date: Feb 2015
Location: Tucson
Posts: 866
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Absolutely! the PRC heads have BETTER THAN STOCK PTV, even at 65cc chambers(that is just your heads with .018 or so milled off the deck).
Stock, 68cc chambers on the PRC255's are about .020 better PTV than stock.
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2015 SS/RS/1LE
HSA delete, VMAX throttle body, CAI inc. Intake, PRC255 heads, BTR 660 springs, BTR cryo-treated rockers, PAT G 232/240 .654/.626 110+2, johnson 2110's, Manton 502 pushrods, C5R, Melling high volume/high pressure, Powerbond 25% underdrive pulley, Proform covers, Kooks stepped headers, catless mids, Doug Thorley exhaust. 512rwhp, 446rwtq on a mustang dyno, tuned by Cunningham motorsports. |
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11-08-2015, 10:42 AM
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#10 |
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old school chevy rodder
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You may just want to get the stock GMPP ported heads for $1200 like I did and sell your stockers as the prices can vary widely for porting. And shaving the heads to gain in what tiny bit of compression you may get can net you maybe 5hp if you go one point of compression ......compared to having ported heads making 20-30 hp. Also various aftermarket heads are out there for a lot more $$$ But hey if you get a good deal and are happy that's what counts. As long as it gets put back together right...lol
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