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GMPP LSX block builds...

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Old Jan 16, 2007 | 01:39 PM
  #21  
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GM wants us to have a LS powered colorado at a car show as soon as possible....
Screw the shows, put it in the showroom!
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Old Jan 16, 2007 | 02:42 PM
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Originally Posted by NBred94
Screw the shows, put it in the showroom!

IF INSURANCE, AND NTSB WOULDNT BEND US OVER IT WOULD BE ON THE STREETS..... GM IS VERY PERFORMANCE ORIENTED..... BUT WE HAVE MANY CONSTRAINTS AS TO WHAT WE CAN PUT ON THE STREETS
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Old Jan 16, 2007 | 04:39 PM
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Ok, I'm thinking that AFR has to be coming out with some heads between now and when I'm ready to build my engine and that was going to be my source for heads. Then I can use the Edelbrock spyder intake I currently have with the 4bbl square bore TB.

I know these L92 heads are supposed to flow pretty well unported and even better worked but Airflow Research has always had an exellent product and had my interest since I'll be N/A. If I were going FI the bang for the buck L92s would be perfect but I want all I can get out of this 500ci block naturally aspirated as I can get. And heads are a huge part of that. What are y'alls thoughts?

I am certain I won't be running any stock style or FAST intake, I want the spyder style or sheetmetal due to the lean issues with the 7th and 8th cylinders. I like the Wood Hauler's new set-up and would like to run that with a Speed Density tune. And the L92s won't mate with the Edelbrock piece I have unless something comes out from them soon.
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Old Jan 16, 2007 | 05:00 PM
  #24  
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dont know if you have seen this, byt GM Already makes one. You would have to drill it for injectors tho.

http://www.sdpc2000.com/search.asp?s...4401&doquery=1

http://www.gmhightechperformance.com...ine_l92_heads/
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Old Jan 16, 2007 | 05:12 PM
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Originally Posted by Z06 DREAMING
Ok, I'm thinking that AFR has to be coming out with some heads between now and when I'm ready to build my engine and that was going to be my source for heads. Then I can use the Edelbrock spyder intake I currently have with the 4bbl square bore TB.

I know these L92 heads are supposed to flow pretty well unported and even better worked but Airflow Research has always had an exellent product and had my interest since I'll be N/A. If I were going FI the bang for the buck L92s would be perfect but I want all I can get out of this 500ci block naturally aspirated as I can get. And heads are a huge part of that. What are y'alls thoughts?

I am certain I won't be running any stock style or FAST intake, I want the spyder style or sheetmetal due to the lean issues with the 7th and 8th cylinders. I like the Wood Hauler's new set-up and would like to run that with a Speed Density tune. And the L92s won't mate with the Edelbrock piece I have unless something comes out from them soon.

Does your 4BBL TB have a progressive linkage?
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Old Jan 16, 2007 | 05:25 PM
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Originally Posted by s10mods
dont know if you have seen this, byt GM Already makes one. You would have to drill it for injectors tho.

http://www.sdpc2000.com/search.asp?s...4401&doquery=1

http://www.gmhightechperformance.com...ine_l92_heads/
yeah I know, but I already have all these parts... just trying to salvage what I have but I may start all over again
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Old Jan 17, 2007 | 10:48 AM
  #27  
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Originally Posted by CHEVRACER83
it is a great job..... I love it.

BTW edited above post...

Not to mention life contract doesnt hurt either...
Do you guys need another ME there? Seriously!
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Old Jan 17, 2007 | 06:03 PM
  #28  
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Some sweet info on the L92 heads and intake in this vid!
Over 360cfm CNC work straight from GMPP

GMPP L92 info link
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Old Jan 17, 2007 | 08:05 PM
  #29  
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This idea is currently running through my head as well.

Does anybody know what forged internals are already "off the shelf" available?
I mean for bigger cubes not a 408. Say a 454 or 500ci? Rods gonna be 6.25?
With 450+ci, what can you rev that to? Seems like 6000+rpm would be a bit much for that much rotating mass. I want a TQ monster and I think a 454 would be about right. I'm sure the FLT LV5 65E can handle it.
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Old Jan 17, 2007 | 08:23 PM
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here we have removed the valvetrain from the ls7... hehe

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