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09-26-2015, 08:59 PM
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#1 |
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Trust me I'm a Scientist.
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Aftermarket Cylinder Heads Options ideas
I'm currently running ported stock heads by Lethal racing and is wondering what Heads are you guys running for those who have upgraded theirs and what gains did you get from them and how are you guys liking them.
Or which aftermarket heads out there do you guys think will be good for 550rwhp+ setup? Just trying to research as much as I could for my current NA setup.
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"From ZERO to a Tire-Burning HERO!"
Mods: RotoFab CAI, SW Headers, HiFlo Cats, Borla Atak Catback, Nightfury Cam, Ported Heads,Intake,TB, melling pump, Morosso Oil Separator. |
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09-26-2015, 09:14 PM
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#2 |
 Drives: 2014 SS1-1le Crystal red metallic Join Date: May 2015
Location: Boston, mass
Posts: 378
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I was told N/A heads not a big help .. And will never get to 550 staying stock displacement
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09-26-2015, 09:21 PM
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#3 |
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Trust me I'm a Scientist.
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Just wondering what the increase would be because my intake and heads are still stock and I dyno at 488-500rwhp been on different dyno but at 488-493 was at Lethal Racing. 10-15rwhp per part would be awesome at this point.
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"From ZERO to a Tire-Burning HERO!"
Mods: RotoFab CAI, SW Headers, HiFlo Cats, Borla Atak Catback, Nightfury Cam, Ported Heads,Intake,TB, melling pump, Morosso Oil Separator. |
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09-28-2015, 12:57 PM
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#4 |
 
Drives: 15' red hot 1le Join Date: Dec 2014
Location: Michigan....from South Texas
Posts: 94
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If possible romove your heads and send to tea, wcch,or reher Morrison for their porting ,valve job n blending.
Also for stock cubes I wouldn't blow out the intake ports they are sefficent just need alittle touch up |
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09-28-2015, 02:45 PM
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#5 |
        
Drives: 73 VETTE ,, 05 2500hd diesel,14 1LE Join Date: Feb 2014
Location: The Left lane PHOENIX AZ
Posts: 2,626
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I see a 418 forged engine with Mast or PRC heads in your future if you want big numbers NA.
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OLD GUY FLYING FAST AND LOW
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09-28-2015, 09:46 PM
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#6 |
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Trust me I'm a Scientist.
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is there any members running a cam, full bolt ons + heads here? please chime in or if you guys know any how much rwhp do they have?
__________________
"From ZERO to a Tire-Burning HERO!"
Mods: RotoFab CAI, SW Headers, HiFlo Cats, Borla Atak Catback, Nightfury Cam, Ported Heads,Intake,TB, melling pump, Morosso Oil Separator. |
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09-28-2015, 10:44 PM
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#7 |
 Drives: 2013 2SS/RS 1LE Join Date: Nov 2014
Location: Iowa
Posts: 23
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I'm running west coast cylinder heads, 21st century cam (233/247/114 .623), Nick Williams 102 TB, Fast intake, 2" LT headers, and 3" Outlaw exhaust. 510 rwhp. Dyno tuned 93 octane. Loud n Choppy. Lol
Last edited by Farm; 09-28-2015 at 10:55 PM. |
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09-28-2015, 11:23 PM
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#8 | |
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Trust me I'm a Scientist.
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Quote:
__________________
"From ZERO to a Tire-Burning HERO!"
Mods: RotoFab CAI, SW Headers, HiFlo Cats, Borla Atak Catback, Nightfury Cam, Ported Heads,Intake,TB, melling pump, Morosso Oil Separator. |
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09-29-2015, 02:42 AM
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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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full aftermarket casting Heads and a custom cam might net you more than just 10-15 more hp, and more importantly, you may be able to bump up your torque output. There are plenty of guys here running full aftermarket castings, a mildly aggressive cam, and some even a FAST intake and 102mm TB and they are getting anywhere from 515-530rwhp, as well as 465 or better rwtq.
An all-out setup would be 65-66cc chambered PRC260 heads(if 93 octane or better), FAST intake and NW 102 TB, 1-7/8 headers to a 3" exhaust. It'll net well over 500rwhp, but your bottom end tq will likely suffer, although peak tq should be over 450lb/ft.
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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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10-22-2015, 08:18 AM
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#10 |
Drives: LSx Performance Specialist Join Date: Jul 2011
Location: Lafayette, LA
Posts: 517
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Our hand ported Factory LS3 heads normally gain 18-20 rwhp putting the NF cam around 510rwhp. You could always go with TSP or Mast heads for larger gains. On a NA setup you will hit a brick wall with the LS3 intake.
Shawn |
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10-22-2015, 08:47 AM
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#11 | |
 
Drives: 2013 1SS 1LE Black - Std Exhaust Join Date: Mar 2013
Location: Brunswick, GA
Posts: 3,622
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Quote:
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10-23-2015, 06:50 AM
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#12 |
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Drives: LSx Performance Specialist Join Date: Jul 2011
Location: Lafayette, LA
Posts: 517
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Ported Heads, NF Cam, Headers- 1 7/8, RotoFab, 160stat, UD Pulley, NGK TR6 will get you there.
Shawn |
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10-23-2015, 08:14 AM
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#13 |
Drives: 14 1le Join Date: May 2012
Location: Walton, In
Posts: 330
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Just call erl and have them build you a 427 or 454 and sell your stock motor. If your goal is 550 rwhp plus you will need cubes.
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06 gto Maggie 489 rwhp sold
05 gto ERL/HKE 454 609rwhp na sold 06 Z06 500 rwhp sold 10 2ss ERL 427 530 rwhp sold 14 1ss 1le |
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