Ported LS6 heads vs unported
10-01-2006, 07:45 PM
#1
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Ported LS6 heads vs unported
Does anyone know what kind of gains for ported and for ported and polished vs untouched LS6 heads?
Last edited by cam99; 10-02-2006 at 09:38 AM.
10-02-2006, 12:00 PM
#4
Instructor
I would think somewhere between 10-50 RWHP depending on who ports them and how much they are milled. I know ECS just made 470 RHWP with a ported set and an LS6 INTAKE!!! You might call them.
10-03-2006, 04:44 AM
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I remember some data on this several years ago. Installing ported heads with a stock cam resulted in marginal gains. You need a good cam to take advantage of the improved flow capabilities.
10-03-2006, 08:06 AM
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WOW! What great numbers WS6TransAm01! I want those numbers but don't want to invest too much more $$$. I've had the car down for a month now.
I recently put in the Cheatr cam and have brand new LS6 heads mad from the SPM casting process. The ports are pretty smooth, however I'm going to polish them up myself and put the P&P $$$ towards a new rear, probably 4.10's.
I sent Carmen an e-mail regarding Porting and Polishing, but he hasn't gotten back to me.
I recently put in the Cheatr cam and have brand new LS6 heads mad from the SPM casting process. The ports are pretty smooth, however I'm going to polish them up myself and put the P&P $$$ towards a new rear, probably 4.10's.
I sent Carmen an e-mail regarding Porting and Polishing, but he hasn't gotten back to me.
Last edited by cam99; 10-03-2006 at 08:11 AM.
11-09-2006, 02:11 PM
#10
Drifting
Look a #'s for Z06's with Cams and compare them to PP heads from AFR, PRC, or Patriot and go from there.
I'm seeing ~400-420rwhp/370-390 tq with stock 243's and high 22X cam and as much as 430-450rwhp/390-420 rwtq with PP heads and the same cam. Basically with a fairly aggressive cam people are putting down 10-30 rwhp/tq more. The question becomes: Is it worth $600 for the porting? I went with the ported heads just because they were only a bit more than getting stock LS6 heads by the time you factor in new guides, valves, etc.
I'm seeing ~400-420rwhp/370-390 tq with stock 243's and high 22X cam and as much as 430-450rwhp/390-420 rwtq with PP heads and the same cam. Basically with a fairly aggressive cam people are putting down 10-30 rwhp/tq more. The question becomes: Is it worth $600 for the porting? I went with the ported heads just because they were only a bit more than getting stock LS6 heads by the time you factor in new guides, valves, etc.
11-10-2006, 09:50 AM
#11
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I wish I could answer your question. I have a ram air setup and on the dyno made 444rwhp with a 12.0:1 A/F. 
I need the fuel for when the car is moving to lean out the mixture. I'm in the process of calculating actual hp based on mainifold pressure readings above atmospheric. http://www.vararam.com/ramairinaroadcar.html I'll probably have my answer today with some data logging.
I need the fuel for when the car is moving to lean out the mixture. I'm in the process of calculating actual hp based on mainifold pressure readings above atmospheric. http://www.vararam.com/ramairinaroadcar.html I'll probably have my answer today with some data logging.
11-15-2006, 01:38 PM
#12
Burning Brakes
I'm very interested in this answer.
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
11-15-2006, 02:17 PM
#13
Team Owner
Originally Posted by LF97C5Vette
I'm very interested in this answer.
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
Chris
Last edited by chaase; 11-15-2006 at 03:37 PM.
11-15-2006, 03:28 PM
#14
Burning Brakes
So it looks like for a mild 224-228ish cam, long tubes, and intake upgrades, to port and polish LS6 heads (On an LS1) will net around 20-30 rwhp? On stock everything, P&P will net very little, and on a wild or aggressive cam profile P&P can see gains upwards of 50rwhp? Am i understanding correctly?
Thanks,
Dan
Thanks,
Dan
11-15-2006, 09:35 PM
#15
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CI 7-8-9-10 Veteran
Originally Posted by LF97C5Vette
I'm very interested in this answer.
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
11-16-2006, 08:06 AM
#16
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Location: Middleboro Massachusetts
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Originally Posted by LF97C5Vette
I'm very interested in this answer.
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
11-16-2006, 08:22 AM
#17
Drifting
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Update
Originally Posted by zo6vetteman2003
I wish I could answer your question. I have a ram air setup and on the dyno made 444rwhp with a 12.0:1 A/F. I need the fuel for when the car is moving to lean out the mixture. I'm in the process of calculating actual hp based on mainifold pressure readings above atmospheric. http://www.vararam.com/ramairinaroadcar.html I'll probably have my answer today with some data logging.
I need the fuel for when the car is moving to lean out the mixture. I'm in the process of calculating actual hp based on mainifold pressure readings above atmospheric. http://www.vararam.com/ramairinaroadcar.html I'll probably have my answer today with some data logging.30.62/.85 (driveline loss) = 36chp @ 14.5 psi.
444/.85 = 522chp + 36chp = 558chp @ 14.5psi
558chp (.85) = 474.3rwhp @ 6800rpm estimated
11-16-2006, 03:41 PM
#18
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Originally Posted by LF97C5Vette
I'm very interested in this answer.
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
I am planning on installing:
Texas Speed 228R Camshaft (228/228 .588/.588)
Hardened Pushrods, Dual Drop in Springs
Titanium Seats/seals/retainers
LS6 (243 casting) Cylinder Heads
LS6 Oil Pump
LS2 Timing Chain
LS6 Intake Manifold
Custom Tune
And already have
DTE LTs
Twin Cone Air Intake
B&B Cat Back
My goal was 400rwhp - and i was thinking i'd need to port and polish those heads in order to get there. I'm looking at about $1,000 to P&P these heads, and if that will shoot me well over the 400rwhp mark, then i'd rather save the money and not do it.
Will i need P&P on this setup to hit 400rwhp?
With this setup what would fully ported and polished ls6 heads bring me to?
Thanks,
Dan
I have 365 rwhp with a mild Thunder Racing Cheatr camshaft - 215/232 .601/.579 LSA 119, LS6 heads and Intake, short tubes, ported TB and CAI. No porting or polishing.
11-16-2006, 07:10 PM
#19
Drifting
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Originally Posted by cam99
To gauge your potential rwhp....
I have 365 rwhp with a mild Thunder Racing Cheatr camshaft - 215/232 .601/.579 LSA 119, LS6 heads and Intake, short tubes, ported TB and CAI. No porting or polishing.
I have 365 rwhp with a mild Thunder Racing Cheatr camshaft - 215/232 .601/.579 LSA 119, LS6 heads and Intake, short tubes, ported TB and CAI. No porting or polishing.