Help picking parts for S/C build
Thread Starter
Teching In
Joined: Sep 2015
Posts: 45
Likes: 0
From: Denver, CO
Help picking parts for S/C build Hey everyone, I am currently running a stockish LS6 in my competition drift BMW. I have it mated to a modified CTS-V T56 with a Monster 950hp clutch. This combination is working great and it is a blast to drive, but I got bit by the HP bug (again) and am wanting to start building another engine slowly. I am looking to make 600-700whp, however I don't want to be at all my parts max potential. A set up capable of 900 detuned to run extremely safe at 650 would be ideal. Here is what I am thinking so far...
A new Chevy Performance block
https://www.summitracing.com/parts/n...1166/overview/
Then one of these Texas Speed rotating assemblies (not sure on stroke yet)
https://www.texas-speed.com/p-787-ts...-assembly.aspx
Send my 243 heads out for a wicked port and polish / valvetrain build
http://www.advancedinduction.com/LSX...cGMLS2Head.php
and then a LSA supercharger with adapter plates to fit the 243 heads, a Walbro 450lph, and some big injectors.
Does this sound like a good plan, or is there something I am overlooking? Any recommendations on other parts to check out or on cam grinds for this setup?
Thanks!
A new Chevy Performance block
https://www.summitracing.com/parts/n...1166/overview/
Then one of these Texas Speed rotating assemblies (not sure on stroke yet)
https://www.texas-speed.com/p-787-ts...-assembly.aspx
Send my 243 heads out for a wicked port and polish / valvetrain build
http://www.advancedinduction.com/LSX...cGMLS2Head.php
and then a LSA supercharger with adapter plates to fit the 243 heads, a Walbro 450lph, and some big injectors.
Does this sound like a good plan, or is there something I am overlooking? Any recommendations on other parts to check out or on cam grinds for this setup?
Thanks!
Why not use an LS2 block? The LS2 block is about $130 more from summit and you may need to get some adapter harnesses if your BMW is using a Gen III setup, but you can use LS3 heads. Unported LS3 heads will usually flow more than the ported 243 heads and you won't need those adapter plates, so you can save a good chunk of change in the grand scheme of things.
Thread Starter
Teching In
Joined: Sep 2015
Posts: 45
Likes: 0
From: Denver, CO
Ah, I had not even thought of that. I guess my only hangup to going that route would be that I don't know anything about the LS3.
I am using a mount kit desgined for an LS1, and I am not sure if the mounts are the same or if the headers would line up (custom swap headers)
I am using a 24x harness from PSIconversion along with their ECU, and I am not sure if that would work either.
Basically I want to have the built engine on a stand ready to drop in over a weekend if the LS6 in the car fails at some point during the season. What I don't want to do is re-engineer the whole swap, and I was under the impression that is what I would have to do to run the LS3
I am using a mount kit desgined for an LS1, and I am not sure if the mounts are the same or if the headers would line up (custom swap headers)
I am using a 24x harness from PSIconversion along with their ECU, and I am not sure if that would work either.
Basically I want to have the built engine on a stand ready to drop in over a weekend if the LS6 in the car fails at some point during the season. What I don't want to do is re-engineer the whole swap, and I was under the impression that is what I would have to do to run the LS3
Ah, I had not even thought of that. I guess my only hangup to going that route would be that I don't know anything about the LS3.
I am using a mount kit desgined for an LS1, and I am not sure if the mounts are the same or if the headers would line up (custom swap headers)
I am using a 24x harness from PSIconversion along with their ECU, and I am not sure if that would work either.
Basically I want to have the built engine on a stand ready to drop in over a weekend if the LS6 in the car fails at some point during the season. What I don't want to do is re-engineer the whole swap, and I was under the impression that is what I would have to do to run the LS3
I am using a mount kit desgined for an LS1, and I am not sure if the mounts are the same or if the headers would line up (custom swap headers)
I am using a 24x harness from PSIconversion along with their ECU, and I am not sure if that would work either.
Basically I want to have the built engine on a stand ready to drop in over a weekend if the LS6 in the car fails at some point during the season. What I don't want to do is re-engineer the whole swap, and I was under the impression that is what I would have to do to run the LS3
As for the crank, yes a 24x LS6 crank will swap into a Gen IV LS2/3 block, but of course you're going to want to check the bearing clearances. Even if you go with a forged 402/408ci rotating assembly, you can still get it with a 24x wheel and drop it into an LS2/3 block.
Thread Starter
Teching In
Joined: Sep 2015
Posts: 45
Likes: 0
From: Denver, CO
Awesome! So the best plan of action would be:
GMPP LS3 Block
https://www.summitracing.com/parts/n...3967/overview/
Texas Speed rotating assembly with 24x wheel
http://www.texas-speed.com/p-1020-ts...-assembly.aspx
(I would contact them before ordering to find the best combo for boost)
GMPP ported LS3 heads
https://www.summitracing.com/parts/n...8758/overview/
at this point is the LSA supercharrger going to be the bottleneck? How much power are the LSA's good for with supporting mods?
GMPP LS3 Block
https://www.summitracing.com/parts/n...3967/overview/
Texas Speed rotating assembly with 24x wheel
http://www.texas-speed.com/p-1020-ts...-assembly.aspx
(I would contact them before ordering to find the best combo for boost)
GMPP ported LS3 heads
https://www.summitracing.com/parts/n...8758/overview/
at this point is the LSA supercharrger going to be the bottleneck? How much power are the LSA's good for with supporting mods?
Awesome! So the best plan of action would be:
GMPP LS3 Block
https://www.summitracing.com/parts/n...3967/overview/
Texas Speed rotating assembly with 24x wheel
http://www.texas-speed.com/p-1020-ts...-assembly.aspx
(I would contact them before ordering to find the best combo for boost)
GMPP ported LS3 heads
https://www.summitracing.com/parts/n...8758/overview/
at this point is the LSA supercharrger going to be the bottleneck? How much power are the LSA's good for with supporting mods?
GMPP LS3 Block
https://www.summitracing.com/parts/n...3967/overview/
Texas Speed rotating assembly with 24x wheel
http://www.texas-speed.com/p-1020-ts...-assembly.aspx
(I would contact them before ordering to find the best combo for boost)
GMPP ported LS3 heads
https://www.summitracing.com/parts/n...8758/overview/
at this point is the LSA supercharrger going to be the bottleneck? How much power are the LSA's good for with supporting mods?
