INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

having 6.0L LQ9 forged...should I stroke it to 408?

Thread Tools
 
Search this Thread
 
Old Feb 12, 2007 | 07:28 PM
  #1  
staffcurtis's Avatar
Thread Starter
Staging Lane
iTrader: (-1)
 
Joined: Oct 2006
Posts: 83
Likes: 0
From: Garner, NC
Default having 6.0L LQ9 forged...should I stroke it to 408?

I have scoured the forums on this one, but my questions have not been fully answered. I would like to have around 600rwhp. I have a 2003 Escalade AWD 6.0L. I have a local shop (www.ryansperformance.com) that is going to do all the work. I am looking for a vehicle that runs reliably, and is a total sleeper. Street driveability is the utmost of importance (only a mild cam, and semi-quiet supercharger/turbo). I would rather lose power than to compromise streetability. At WOT, all streetability be damned, but nothing must show when cruising. I will need forged components to obtain my power requirements, but do I seriously need to stroke out the 6.0L to 7.0L? What are the pros/cons? I want to keep the setup under $8500 not including the turbo/supercharger whichever I decide. Any help would be greatly appreciated.
Reply
Old Feb 12, 2007 | 07:32 PM
  #2  
nightrunner's Avatar
Mr. Obvious
iTrader: (4)
 
Joined: Jan 2006
Posts: 6,006
Likes: 2
From: Manchester, TN
Default

you wont go from a 6.0L to 7.0L you will go from a 6.0L to 6.6L-6.7L ( not sure on exact specs)

are you planning on 600rwhp on motor or with the FI too
Reply
Old Feb 12, 2007 | 07:33 PM
  #3  
Derek @ EDO's Avatar
FormerVendor
iTrader: (73)
 
Joined: Nov 2005
Posts: 4,072
Likes: 8
From: Baton Rouge, LA
Default

http://www.texas-speed.com/shop/item...mid=45&catid=3

then get a FLT tranny

then go whip ***.
Reply
Old Feb 12, 2007 | 07:53 PM
  #4  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

I have a little under that into my 418, cant beat the tq of a long stroke motor in a heavy pig
Reply
Old Feb 12, 2007 | 08:07 PM
  #5  
Lurius's Avatar
TECH Resident
iTrader: (7)
 
Joined: Dec 2004
Posts: 850
Likes: 0
From: Arlington, Texas
Default

As for the size: 408=6.7L, 427=7.0L

You might want to give nitrous a try, it can be done stealthy quite easily, and at a lower cost than a turbo/SC setup.

-Lurius
Reply
Old Feb 12, 2007 | 08:43 PM
  #6  
staffcurtis's Avatar
Thread Starter
Staging Lane
iTrader: (-1)
 
Joined: Oct 2006
Posts: 83
Likes: 0
From: Garner, NC
Default

I don't know why, but I'm not a fan of nitrous. I've always liked the all-the-time power of a supercharger or turbo setup. The power numbers I'm aiming for are with either the supercharger or turbo. Either way, a 4L80E is already planned. I just didn't want to bring up too many topics in this one thread. Can a 7.0L...err 6.7L idle as well as the 6.0L does(for the power I want)? Is the extra torque/driveability worth the tradeoff?
Reply
Old Feb 12, 2007 | 10:34 PM
  #7  
quicksilverado's Avatar
TECH Junkie
iTrader: (8)
 
Joined: Dec 2003
Posts: 3,944
Likes: 1
From: Marietta, Ga.
Default

I was right at 600 rwhp with 370 ci and a STS turbo. Drives completely stock until you go wot throttle and then its a completely different world.
Reply
Old Feb 12, 2007 | 11:01 PM
  #8  
staffcurtis's Avatar
Thread Starter
Staging Lane
iTrader: (-1)
 
Joined: Oct 2006
Posts: 83
Likes: 0
From: Garner, NC
Default

Originally Posted by quicksilverado
I was right at 600 rwhp with 370 ci and a STS turbo. Drives completely stock until you go wot throttle and then its a completely different world.
Wow...that sounds exactly what I want. Got more specifics other than your sig?

Thanks
Reply
Old Feb 12, 2007 | 11:41 PM
  #9  
dirt track racer 81's Avatar
TECH Senior Member
iTrader: (45)
 
Joined: Jun 2005
Posts: 9,439
Likes: 13
From: Hennessey, Oklahoma
Default

Stroke IT!! Stroke it to the left, Stroke to the right..hell im drunk and dont remember teh rest of the song..
Reply
Old Feb 12, 2007 | 11:56 PM
  #10  
2004SSS's Avatar
TECH Addict
iTrader: (25)
 
Joined: Dec 2004
Posts: 2,913
Likes: 0
From: southern california
Default

im planning on 700+ awhp with a blower on a 370 too. the blower is also very quiet or at least was , the new blower has a bit more whine to it but not a roots style whine , its a centrifugal. but when im wot it just sounds mean. i havent got the 370 finished yet but it will idle tame and sound close to stock. the hard part is adapting an 80e to our awd setup. a 408 will get you more than what you want. the only reaosn i went for a 370 over a 408 is i can boost the crap out of the 370 and rev it up a bit higher. the 408's bottom end torqe would kill a 65e in a matter of passes and also could create a traction problem.
Reply



All times are GMT -5. The time now is 09:04 AM.