Ls7 Build Questions/advise needed
01-18-2009, 12:06 PM
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Ls7 Build Questions/advise needed Well the Ls2 is knocking so it is time to start the Ls7 Build. I would be interested in any opinions as to the parts for the build from guys who have done one.
I am thinking of going with the following for the build.The heads are cnc ported l92 heads with 70cc chambers the intake I will be using is the l76. The parts for the bottom end I am looking at are:
Callies Compstar Crank
Callies Compstar Rods
Diamond or Weisco pistons Dished 22cc
I would like to stay as close to 9.5 to 1 compression as possible as I plan on running the D1sc also. I am planning on no more than 10psi for this motor. The motor has been bored to 4.130 also. Just looking for a mild 750rwhp.
I realize the d1sc might not be perfect so I may have to move up to an f1 in time.
Tim
I am thinking of going with the following for the build.The heads are cnc ported l92 heads with 70cc chambers the intake I will be using is the l76. The parts for the bottom end I am looking at are:
Callies Compstar Crank
Callies Compstar Rods
Diamond or Weisco pistons Dished 22cc
I would like to stay as close to 9.5 to 1 compression as possible as I plan on running the D1sc also. I am planning on no more than 10psi for this motor. The motor has been bored to 4.130 also. Just looking for a mild 750rwhp.
I realize the d1sc might not be perfect so I may have to move up to an f1 in time.
Tim
01-18-2009, 12:58 PM
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Good Luck man. I am in the process of having Mikey @ Rapid build mine. Darton sleeved LS2 block, Callies Dragonslayer Crank,Compstar Rods, and Diamond Pistons with 3.2cc valve reliefs. Richard @ WCCH is porting the LS7 heads for me and Mikey is going to port the intake. I am going to be running 11.5:1 compression. I am running springs from TSP and Yella Terra rockers so now I can use the Dominator Cam.
01-18-2009, 03:10 PM
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Good Luck man. I am in the process of having Mikey @ Rapid build mine. Darton sleeved LS2 block, Callies Dragonslayer Crank,Compstar Rods, and Diamond Pistons with 3.2cc valve reliefs. Richard @ WCCH is porting the LS7 heads for me and Mikey is going to port the intake. I am going to be running 11.5:1 compression. I am running springs from TSP and Yella Terra rockers so now I can use the Dominator Cam.
01-19-2009, 12:39 AM
#4
How is this an LS7 build if you're not using LS7 heads? Probably would advise not running boost using an LS7 block. They've been known to crack/drop their liners in anything but NA applications.
Well the Ls2 is knocking so it is time to start the Ls7 Build. I would be interested in any opinions as to the parts for the build from guys who have done one.
I am thinking of going with the following for the build.The heads are cnc ported l92 heads with 70cc chambers the intake I will be using is the l76. The parts for the bottom end I am looking at are:
Callies Compstar Crank
Callies Compstar Rods
Diamond or Weisco pistons Dished 22cc
I would like to stay as close to 9.5 to 1 compression as possible as I plan on running the D1sc also. I am planning on no more than 10psi for this motor. The motor has been bored to 4.130 also. Just looking for a mild 750rwhp.
I realize the d1sc might not be perfect so I may have to move up to an f1 in time.
Tim
I am thinking of going with the following for the build.The heads are cnc ported l92 heads with 70cc chambers the intake I will be using is the l76. The parts for the bottom end I am looking at are:
Callies Compstar Crank
Callies Compstar Rods
Diamond or Weisco pistons Dished 22cc
I would like to stay as close to 9.5 to 1 compression as possible as I plan on running the D1sc also. I am planning on no more than 10psi for this motor. The motor has been bored to 4.130 also. Just looking for a mild 750rwhp.
I realize the d1sc might not be perfect so I may have to move up to an f1 in time.
Tim
01-19-2009, 07:28 PM
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The heads flow very well as they are CNC ported and the valves are only slightly smaller than the ls7 heads. I have spoke to quite a few engine builders who are building these motors for more boost than I am planning to run. If the fuel and tune are right I feel it will be fine for a mild boost set-up. 