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12-07-2015, 07:58 AM
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#1 |
 Drives: Synergy Green SS Camaro 6 speed Join Date: Sep 2014
Location: San diego
Posts: 194
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port stock ls3 heads or buy cnc ls3 heads
Is there any reason i should do one or the other. I feel like it would be cheaper to port stock heads instead of buying new ones
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Synergy Green Camaro SS LS3 TH400, Stock Ported heads, Night Fury cam 4600 Circle D stall. 3.91 gears and rotofab intake, obx headers,
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12-07-2015, 09:34 AM
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#2 | |
 
Drives: something faster than you Join Date: Aug 2010
Location: where dem hoes be
Posts: 315
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Quote:
Sending your heads to be ported you have to package and ship them, wait around for a few weeks while not being able to drive your car then install them. And as far as price, it really depends on what you get. Either one can be more expensive than the other. GMPP heads are $1400 all together and after selling your old heads you would only be out $800...while most port jobs start around $1000 and don't include springs. |
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12-07-2015, 10:37 AM
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#3 |
          
Drives: 2013 SS Join Date: May 2013
Location: DFW
Posts: 4,102
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Depends where and how you go about. CNC LS3 heads won't flow as good as having a good shop do custome specd ported heads. GPI has an amazing program ship yours in and they'll ship you some fresh ported ones.
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12-08-2015, 06:47 AM
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#4 |
Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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I may do that^^^^^^
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12-08-2015, 06:58 AM
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#5 |
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old school chevy rodder
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I bought the GMPP heads from summit, factory porting cnc from gm for $1200, sure the springs on it are for a ASA low lift cam but the numbers for the heads outflow a lot of big name shops that are $$$$ more. Sure flow is not everything, but it is a LOT.... the heads come with hollow intakes and you will not find anyone offering ported heads complete for less, and then you spring them for your cam..... and no core charge.
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2021 Wild Cherry ZL1 A10, Sunroof, Data,Red Carbon Interior, Nav, RotoFab Big Gulp , Elite x2ultra, Borla ATAK, Driveshaft shop, BMR susp, Speed covers, intercoolers, ATI , 2650 MAG, DSX lid, 103 NW, TSP Longtubes & cats, LPE, 1le mods, ,LME cover, Katech pump and chain, Trunnions, BTR stage 2, LPE boostapump, Gforce, Speed eng , Granetteli, etc etc
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12-08-2015, 07:02 AM
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#6 |
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Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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Most ppl I have tlk to recommend the GMPP heads
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12-08-2015, 08:24 AM
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#7 |
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Really, Really Fast
Drives: 2010 Camaro SS Join Date: Feb 2013
Location: St.Louis,Mo
Posts: 686
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A ported head will out flow a basic CnC head. trickflow and PRC both make a nice head for the LS3 or if your looking for a really nice one, Franknstein.
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Procharger F1X, TH400, E85, CBI Street Cars, DSX Tuning, 1300whp
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12-08-2015, 09:27 AM
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#8 |
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Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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Are the cost comparable?
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12-08-2015, 09:32 AM
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#9 |
 
Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,101
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The GM cnc head is a basic port. For some thats all thats needed.
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12-08-2015, 09:34 AM
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#10 |
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Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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When would you recommend more aggressive porting compared to GMPP
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12-08-2015, 09:45 AM
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#11 |
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Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,101
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When your wanting more.
I dont know of any of the fast stock bottom end cars or stokers running them. |
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12-08-2015, 09:48 AM
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#12 |
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Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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Ehhh I jus want a fast street car...not chasing numbers
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12-08-2015, 09:51 AM
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#13 |
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Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,101
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GM cnc exhaust compared to aftermarket
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12-08-2015, 10:45 AM
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#14 |
Drives: 73 VETTE ,, 05 2500hd diesel,14 1LE Join Date: Feb 2014
Location: The Left lane PHOENIX AZ
Posts: 2,625
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Very nice Bo , a picture is worth a thousand words.
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OLD GUY FLYING FAST AND LOW
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