2011 427LSX w/ Vortech YSi - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

FiveO · 03-16-2011, 07:05 PM

Get your popcorn ready!!! Nice build!!

T-RO 2SS · 03-16-2011, 08:32 PM

More More...

DSX · 03-16-2011, 09:38 PM

Can I ask why you went with LS3 heads over LS7 based cylinder heads? The flow on the LS7 based heads is just so much better. I went with CNC'd LSX-LS7 heads on my twin turbo 427 for my Z06.

YO6 · 03-17-2011, 12:36 AM

I like what I see. This is going to end up being an ultimate road race course monster with the v3 kw suspension (which is top notch IMO better than pedders) and the unsurpassed efficiency of the YSi blower and large front mount intercooler are the most ideal parts you can buy. The centrifugal blowers are the best option for the long endurances of road racing driving and on top of that the vortech units have the best efficiency in the industry. Please tell me this car will end up being driven as it will be ment to be. I would build my car the same way, if I could afford it that is!

Dreamer2430 · 03-17-2011, 12:58 AM

Quote:

Originally Posted by DSX

Can I ask why you went with LS3 heads over LS7 based cylinder heads? The flow on the LS7 based heads is just so much better. I went with CNC'd LSX-LS7 heads on my twin turbo 427 for my Z06.

I was going to ask the same question. A lot of these moster builds that I've seen use the LS7 heads. Just curious.

ADM PERFORMANCE · 03-17-2011, 06:56 AM

Quote:

Originally Posted by Dreamer2430

I was going to ask the same question. A lot of these moster builds that I've seen use the LS7 heads. Just curious.

Much better torque and still great top end power!!!

Mike@RMCR · 03-17-2011, 09:23 AM

Quote:

Originally Posted by DSX

Can I ask why you went with LS3 heads over LS7 based cylinder heads? The flow on the LS7 based heads is just so much better. I went with CNC'd LSX-LS7 heads on my twin turbo 427 for my Z06.

This build was originally going to have a custom made supercharger set up with a Vortech V24 Xi Trim supercharger and 30lbs of boost.

The customer decided that that might be a little too crazy so we toned it down to the YSi. The bottom end is still built for 2000 HP. So we can do just a head and supercharger swap later down the road for crazy HP.

The goal was only for 950 to 1000 HP with this setup so we didn't see the need to switch heads. Also the customer wanted to use something since everything had only 660 miles on it.

We did put Ferrea Competition valves and extreme exhaust valves in the factory heads with a CNC program for the runners.

I do agree that the LS7 style port is far better and was in the original build.

Thanks

DSX · 03-17-2011, 12:59 PM

Quote:

Originally Posted by Mike@RMCR

This build was originally going to have a custom made supercharger set up with a Vortech V24 Xi Trim supercharger and 30lbs of boost.

The customer decided that that might be a little too crazy so we toned it down to the YSi. The bottom end is still built for 2000 HP. So we can do just a head and supercharger swap later down the road for crazy HP.

The goal was only for 950 to 1000 HP with this setup so we didn't see the need to switch heads. Also the customer wanted to use something since everything had only 660 miles on it.

We did put Ferrea Competition valves and extreme exhaust valves in the factory heads with a CNC program for the runners.

I do agree that the LS7 style port is far better and was in the original build.

Thanks

Makes 100% sense. I can relate to changing plans! Bad ass build, thanks for sharing.

Mike@RMCR · 03-17-2011, 05:23 PM

Here are some pics of all the AP racing J Hook Rotors, Hawk Pads, Stainless lines. Also got the drive shaft from DSS for the 9" Conversion.

The engine is on the engine dyno as we speak. So I will post NA #'s once I get them.

Sorry for the blurred pics. Going to go buy a new camera tonight. I guess we have dropped this one one too many times.

*SSE 4 2SS* · 03-17-2011, 07:37 PM

Quote:

Originally Posted by Mike@RMCR

This build was originally going to have a custom made supercharger set up with a Vortech V24 Xi Trim supercharger and 30lbs of boost.

The customer decided that that might be a little too crazy so we toned it down to the YSi. The bottom end is still built for 2000 HP. So we can do just a head and supercharger swap later down the road for crazy HP.

The goal was only for 950 to 1000 HP with this setup so we didn't see the need to switch heads. Also the customer wanted to use something since everything had only 660 miles on it.

We did put Ferrea Competition valves and extreme exhaust valves in the factory heads with a CNC program for the runners.

I do agree that the LS7 style port is far better and was in the original build.

Thanks

Can you share what your flowing with these heads or have they been done yet... I know my LS-3 heads are flowing right at 390 CFM. I have Manley NK 842 Stainless Intake valves and XH-426 Stainless exhaust valves...They are 2.165 and 1.59 inch diameter respectively...

Codefive · 03-18-2011, 08:34 AM

I can understand your reasoning on the LS3 head vs the LS7 but why wouldnt you have used the LXR/MAST LS3 head instead of the GM casting? I mean, you have the 6 bolt block and you're looking to make some good power, why not take advantage of the 6 bolt head with a thicker deck height for longevity and safety not to mention more meat for porting and a better chamber design?

Dont get me wrong, I'm sure it will still make great power and meet or exceed your goals, I just see that you're buying new heads anyway, so why not take advantage of whats out there? This is obviously not a low budget build. Whats a little more cash for a significantly better key part?

Regardless, very cool build! 80 & a 26 on a YSI ... that thing should be singing!

Mike@RMCR · 03-18-2011, 12:35 PM

At the power level the customer wanted there was no need to switch heads. Also this is just a stepping stone as I am sure that we will be doing the Xi Trim with different heads very soon.

Also the customer really wanted to reuse the factory heads just to see how much power we could get out of them.

Thanks for all the comments. Will post up engine dyno #'s as soon as I get them.

Codefive · 03-18-2011, 03:59 PM

My bad ... I thought you bought another set. I didnt realize you were re-using his original heads. Makes sense now

Mike@RMCR · 03-18-2011, 06:39 PM

Here are the engine dyno #'s with NO SUPERCHARGER.

We made 554 HP @ 6400 RPM and 506 FT LB @ 5300 RPM.

Not to bad for a 9.0 : 1 engine and a supercharger grind cam. Also these #'s are NA numbers.

03-16-2011, 07:05 PM	#15
FiveO Drives: 2011 Camaro SS 6speed Manual Join Date: Sep 2010 Location: Baton Rouge, LA Posts: 128 View My Garage	Get your popcorn ready!!! Nice build!! __________________ New Orleans Saints, "America's Team"

03-18-2011, 08:34 AM	#25
Codefive Drives: 1000HP 2010 SSRS Join Date: Jan 2009 Location: Mt. Airy Maryland Posts: 351	cylinder heads I can understand your reasoning on the LS3 head vs the LS7 but why wouldnt you have used the LXR/MAST LS3 head instead of the GM casting? I mean, you have the 6 bolt block and you're looking to make some good power, why not take advantage of the 6 bolt head with a thicker deck height for longevity and safety not to mention more meat for porting and a better chamber design? Dont get me wrong, I'm sure it will still make great power and meet or exceed your goals, I just see that you're buying new heads anyway, so why not take advantage of whats out there? This is obviously not a low budget build. Whats a little more cash for a significantly better key part? Regardless, very cool build! 80 & a 26 on a YSI ... that thing should be singing!

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03-16-2011, 08:32 PM	#16
T-RO 2SS Drives: 2ss rs M6 Join Date: Oct 2010 Location: baton rouge la. Posts: 66	More More...

03-16-2011, 09:38 PM	#17
DSX Account Suspended Drives: 2006 Z06 Join Date: Oct 2010 Location: St. Louis, MO Posts: 145	Can I ask why you went with LS3 heads over LS7 based cylinder heads? The flow on the LS7 based heads is just so much better. I went with CNC'd LSX-LS7 heads on my twin turbo 427 for my Z06.

03-17-2011, 12:36 AM	#18
YO6 Drives: 01' BOLT Join Date: Oct 2010 Location: OR Posts: 12	I like what I see. This is going to end up being an ultimate road race course monster with the v3 kw suspension (which is top notch IMO better than pedders) and the unsurpassed efficiency of the YSi blower and large front mount intercooler are the most ideal parts you can buy. The centrifugal blowers are the best option for the long endurances of road racing driving and on top of that the vortech units have the best efficiency in the industry. Please tell me this car will end up being driven as it will be ment to be. I would build my car the same way, if I could afford it that is!

03-17-2011, 05:23 PM	#23
Mike@RMCR Drives: Supercharged Join Date: Oct 2009 Location: Colorado Springs Posts: 314	Here are some pics of all the AP racing J Hook Rotors, Hawk Pads, Stainless lines. Also got the drive shaft from DSS for the 9" Conversion. The engine is on the engine dyno as we speak. So I will post NA #'s once I get them. Sorry for the blurred pics. Going to go buy a new camera tonight. I guess we have dropped this one one too many times.

03-18-2011, 12:35 PM	#26
Mike@RMCR Drives: Supercharged Join Date: Oct 2009 Location: Colorado Springs Posts: 314	At the power level the customer wanted there was no need to switch heads. Also this is just a stepping stone as I am sure that we will be doing the Xi Trim with different heads very soon. Also the customer really wanted to reuse the factory heads just to see how much power we could get out of them. Thanks for all the comments. Will post up engine dyno #'s as soon as I get them.

03-18-2011, 03:59 PM	#27
Codefive Drives: 1000HP 2010 SSRS Join Date: Jan 2009 Location: Mt. Airy Maryland Posts: 351	My bad ... I thought you bought another set. I didnt realize you were re-using his original heads. Makes sense now

03-18-2011, 06:39 PM	#28
Mike@RMCR Drives: Supercharged Join Date: Oct 2009 Location: Colorado Springs Posts: 314	Here are the engine dyno #'s with NO SUPERCHARGER. We made 554 HP @ 6400 RPM and 506 FT LB @ 5300 RPM. Not to bad for a 9.0 : 1 engine and a supercharger grind cam. Also these #'s are NA numbers.