6.90's in a junkyard 6.0
06-07-2010, 06:24 PM
#121
On The Tree
Join Date: Oct 2008
Posts: 178
Likes: 0
Received 0 Likes
on
0 Posts
If you went with the L92 heads would you keep the same cam or change to something different?
I have struggled with the choice of heads for this motor, I know that the L92 flow a lot better but yours sure seems to run good.
I am at the point with my motors that I have to make a choice how I am going to spend my money. I have a 385 that I have been putting together and almost have all the parts for it, then I go out a buy the 6.0L from my brother.
Either way I am not going to get this car to the track this year so I must choose which one I am going to go with.
I have pretty much made up my mind to throw all my effort towards the 6.0 since it will make more power in the long run and maybe stay together better.
I have struggled with the choice of heads for this motor, I know that the L92 flow a lot better but yours sure seems to run good.
I am at the point with my motors that I have to make a choice how I am going to spend my money. I have a 385 that I have been putting together and almost have all the parts for it, then I go out a buy the 6.0L from my brother.
Either way I am not going to get this car to the track this year so I must choose which one I am going to go with.
I have pretty much made up my mind to throw all my effort towards the 6.0 since it will make more power in the long run and maybe stay together better.
06-12-2010, 01:44 PM
#123
TECH Apprentice
iTrader: (10)
Join Date: Nov 2008
Location: Tennessee
Posts: 384
Likes: 0
Received 0 Likes
on
0 Posts
what do you have for brakes? Like what calipers, rotors, and master cylinder you running. I plan on running nos and my car stops good but I want to make sure I will be able to stop when I spray it.
06-12-2010, 08:40 PM
#124
TECH Apprentice
Join Date: Jun 2007
Posts: 364
Likes: 0
Received 0 Likes
on
0 Posts
Billy-
I am really impressed. New to LS motors.
These engines are really efficient.
What applications had the 799 heads?
Any thoughts on how your performance would be affected with efi?
John
I am really impressed. New to LS motors.
These engines are really efficient.
What applications had the 799 heads?
Any thoughts on how your performance would be affected with efi?
John
06-12-2010, 09:08 PM
#125
TECH Enthusiast
Thread Starter
iTrader: (6)
Join Date: Aug 2008
Location: DAVIDSON NC
Posts: 571
Likes: 0
Received 0 Likes
on
0 Posts
i have aerospace master cylinder and front brakes and stock rears...my 799 heads came off a 2005 gto and dont know if efi would help or hurt it....but i think it would be easier to tune....
06-13-2010, 11:54 AM
#128
Everything is easier with the right tools and thanks to SPINMONSTER who rented his flycutting setup for my app which made it a breeze. I have been working on cars for 17 years but I have never flycut a piston before so I was just a nervous and cautious as the next guy. I took it very slow and read SPINMONSTERS flycutting thread quite a few time prior to starting.
http://forums.corvetteforum.com/c6-t...mpression.html
I back him 100%. If you have never done it before DONT USE POWER TOOLS!!! The tool shaves the piston like butter. It takes no time by hand to do it. Honestly it was very easy.
I kept pulling the head to check progress and remove the metal shavings.
Here is the motor ready for cutting. I cleaned everything up before taping it up. Clean the surface real good or the tape wont stick.
* sidenote: When you spin the motor over with all the tape on it you will see the tape draw down and blow out. Right when it starts to draw down stop!! Press the tape down and slow rotate back. Just keep pressing the tape down. You will see the piston reach its highest point.
Once the tool rested on the top of the piston I used my .60 shim and locked the collar down. I checked every hole just to make sure I cut .60 in every piston. {never know if one piston sits higher out of the hole then the next.}
I didnt bolt the tool/head down. The weight of the head seemed to be enough. I basicly let the tool do the job with mild pressure. I would watch the top of the head to see if I was applying to much pressure because it would raise up.
So here is after 10 turns
30 turns
50-55 turns
I didnt have a .060 shim so I used a .016/.014/.030 and taped it tight!
finished!! { dont laugh the motor has 90k and came from a escalade. LQ9 or basicly iron ls2}
I wish I had alot more pictures but it really was very simple and easy with very few steps. I hope this helps take some of the fear out of flycutting. It took me about 40mins to do 4 pistons just taking my time and checking my progress.
Big thanks to SPINMONSTER!! He did all the leg work to make so i can run the cam I want and made a scarey task very easy and simple.
I used the little cans of compressed air for cleaning keyboards to remove the shaving.
08-26-2010, 08:58 AM
#133
On The Tree
Join Date: Oct 2008
Posts: 178
Likes: 0
Received 0 Likes
on
0 Posts
Great times Billy!!
I am still trying to get a set of L92's for my motor. Glad to see you already stepped it up with the new heads.
Did you have to re-flycut your pistons to match up with the L92 valves??
I am still trying to get a set of L92's for my motor. Glad to see you already stepped it up with the new heads.
Did you have to re-flycut your pistons to match up with the L92 valves??
08-26-2010, 03:05 PM
#136
how are you getting these times???? i took my car to the track with a D1SC hatch 3000 with me. and is no where near those times. im going back tonight to see how it does with taller tires.
08-26-2010, 04:00 PM
#137
TECH Enthusiast
Thread Starter
iTrader: (6)
Join Date: Aug 2008
Location: DAVIDSON NC
Posts: 571
Likes: 0
Received 0 Likes
on
0 Posts
thats the trick...test-n-tune to find out what your car likes...and it never hurts to have a few good friends around that know their stuff also...lol
08-27-2010, 11:39 AM
#138
Teching In
Join Date: Feb 2009
Location: TAMPA,FLA
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
you have come a long way with this thread.and i for one would like to say,congrats on this build.i only hope my **** will run like yours.i'm putting an ls1 with portedd heads and a cam,and spray in my malibu,and i'm so stoked about this build..congrats again on your builded homie.
08-27-2010, 04:18 PM
#139
TECH Enthusiast
Thread Starter
iTrader: (6)
Join Date: Aug 2008
Location: DAVIDSON NC
Posts: 571
Likes: 0
Received 0 Likes
on
0 Posts
you have come a long way with this thread.and i for one would like to say,congrats on this build.i only hope my **** will run like yours.i'm putting an ls1 with portedd heads and a cam,and spray in my malibu,and i'm so stoked about this build..congrats again on your builded homie.
