keep the LT1 or go LSx?
Originally Posted by the_merv
All of you guys keep thinking it costs alot to do the swap..it's not really that much..
Originally Posted by SLawson86
depends on your budget man... i like both, but i would much rather buy an ls1 car before i swapped mine. For what you would most likely have into the swap and all, its probably a smarter move IMO
I know but like I said, with any performance upgrade I would have to get a new trans, rear, and dyno tune anyways.... If I keep the LT1 I was going to go with a forged internal rebuild, LE2 package, dynaspark opti, full suspension, performabuild trans, and 9" rear. But dropping all that money and supporting mod money into an LT1 engine when there are more reliable engines in the LS series....
Merv- love the car! What all do I need to support the LS series engine? I would suppose a new k-member, wire harness....
Merv- love the car! What all do I need to support the LS series engine? I would suppose a new k-member, wire harness....
[QUOTE=the_merv]LS2 is better than a LS6..LS2 is a Gen IV Engine.
ls6 has a better flowing intake.
and to the op the lt1 is good but remember the ls1 has no opti problems , no hard to replace (fuel injectors aka spark plugs) and you can replace those in minutes.
ls6 has a better flowing intake.
and to the op the lt1 is good but remember the ls1 has no opti problems , no hard to replace (fuel injectors aka spark plugs) and you can replace those in minutes.
dollar for dollar if you are looking for power you cannot beat the 6.0 swap,i personally would not bother doing an Ls1 when 6.0's are available TQ is sweet and HP is perfect.
it just comes down to doing it!
it just comes down to doing it!
Originally Posted by That_guy
ls6 has a better flowing intake.
The LS2 is pretty much the same with a 90mm Port to fit a 90mm Throttle Body.
I'm pretty sure you can figure it out from there..
I have alot of details on all of this stuff...I was looking at all of it when I was doin my Engine..I didn't even bother with the LS1 stuff..
Originally Posted by 96lt1m6
dollar for dollar if you are looking for power you cannot beat the 6.0 swap,i personally would not bother doing an Ls1 when 6.0's are available TQ is sweet and HP is perfect.
it just comes down to doing it!
it just comes down to doing it!
Last edited by the_merv; Jul 28, 2007 at 12:27 AM.
Originally Posted by the_merv
LS6 is the better flowing for the Gen III Engines..78mm Port for the Throttle Body.
The LS2 is pretty much the same with a 90mm Port to fit a 90mm Throttle Body.
I'm pretty sure you can figure it out from there..
I have alot of detials on all of this stuff...I was looking at all of it when I was doin my Engine..I didn't even bother with the LS1 stuff..
Exactly..screw the LS1..go big. That 4" Bore has alot more things that can go on it..and the power difference will suprise the hell out of you..
The LS2 is pretty much the same with a 90mm Port to fit a 90mm Throttle Body.
I'm pretty sure you can figure it out from there..
I have alot of detials on all of this stuff...I was looking at all of it when I was doin my Engine..I didn't even bother with the LS1 stuff..
Exactly..screw the LS1..go big. That 4" Bore has alot more things that can go on it..and the power difference will suprise the hell out of you..
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Originally Posted by 1bdbrd
I thought the same thing until I started seeing how many different covers and plates and things the LS1 has. Honestly, if I go through with this, I'm going to buy a complete ls1 and then trade the auto for a t56. The time I would save sourcing all the small things is more than worth the extra cost. Then just pull the engine apart and put new internals in it and buy a heads and cam setup.
its really all the little **** like power steering pump, the covers, the bolts and nuts, etc that add up. steering linkage, K member, motor mounts,...
still it does not add up to the hp/tq you will gain!
please understand me i love my lt1 but when i added up a sweet build with a 396Lt1 base vs.a 6.0 i saved 1200.00 for the same hp
harness was 100.00
pcm 75.00
k-mem 20.00
my silver car will still be rockin the Lt1
my white 95 gets the 6.0
it is a matter of your budget but i personally have NEVER seen a normally aspirated cam/head 5.7 Lt1 run mid 10s but i have seen quite a few Ls1s do it
so my vote is still the 6.0 based Ls style.
please understand me i love my lt1 but when i added up a sweet build with a 396Lt1 base vs.a 6.0 i saved 1200.00 for the same hp
harness was 100.00
pcm 75.00
k-mem 20.00
my silver car will still be rockin the Lt1
my white 95 gets the 6.0
it is a matter of your budget but i personally have NEVER seen a normally aspirated cam/head 5.7 Lt1 run mid 10s but i have seen quite a few Ls1s do it
so my vote is still the 6.0 based Ls style.
Staging Lane
Joined: May 2007
Posts: 92
Likes: 0
From: Montville, NJ
I have considered this swap, but my biggest concern is LSX PCM and wiring into an LT1 car. Does someone make a plug and play harness for this? Something that will allow me to use all of the factory gauges and all.
Nick
Nick
Originally Posted by Revelation Z28
its really all the little **** like power steering pump, the covers, the bolts and nuts, etc that add up. steering linkage, K member, motor mounts,...
Originally Posted by NJLT1SS
I have considered this swap, but my biggest concern is LSX PCM and wiring into an LT1 car. Does someone make a plug and play harness for this? Something that will allow me to use all of the factory gauges and all.
Nick
Nick
I used a 1999 Harness and a 2002 F-Body PCM.
I researched and completely built the Harness that I have. It took about 15 hours to complete. I stripped it completely out, leaving only the essentials. I took out the AC, A.I.R., EGR, TCS, Cruise Control, Rear O2's, and a few other things. I added LS2 Fuel Injectors, and the Connector for a Corvette 85mm MAF.
I re-wired it to plug directly into the LT1 Chassis. Everything is where it should be, and we can Tune the new PCM for the 402. All the Gauges work, and the Tach has been adjusted. I am still messing with something to get the Temp Gauge to work accurately.
Fuel System:
The LT1 Fuel System is pretty much a seperate System from the PCM, so all it needed was power and it was good. I matched up all the required Wires for it, and it works, Guages didn't have to be touched. I had to use a LS1 Corvette Fuel Filter/Regulator to make the Fuel from the 2-Line LT1 System go into a single inlet Line to the LS2 Rails.
I used the LT1 A4 Transmission Cross Member, modified that a little bit to fit the 4L65E Tranny I have.
I would recommend using the LS1 K-Member, I used my LT1 one and converted the mounts to fit. You have to use the LS1 Steering Rack and the Linkage.
I researched and completely built the Harness that I have. It took about 15 hours to complete. I stripped it completely out, leaving only the essentials. I took out the AC, A.I.R., EGR, TCS, Cruise Control, Rear O2's, and a few other things. I added LS2 Fuel Injectors, and the Connector for a Corvette 85mm MAF.
I re-wired it to plug directly into the LT1 Chassis. Everything is where it should be, and we can Tune the new PCM for the 402. All the Gauges work, and the Tach has been adjusted. I am still messing with something to get the Temp Gauge to work accurately.
Fuel System:
The LT1 Fuel System is pretty much a seperate System from the PCM, so all it needed was power and it was good. I matched up all the required Wires for it, and it works, Guages didn't have to be touched. I had to use a LS1 Corvette Fuel Filter/Regulator to make the Fuel from the 2-Line LT1 System go into a single inlet Line to the LS2 Rails.
I used the LT1 A4 Transmission Cross Member, modified that a little bit to fit the 4L65E Tranny I have.
I would recommend using the LS1 K-Member, I used my LT1 one and converted the mounts to fit. You have to use the LS1 Steering Rack and the Linkage.
It all depends on what you build really..I am using a setup that is about 7 months old(L76/L92 Combo), and it looks very promising.
As far as a LS1 goes..that's small **** compared to what I got..
As far as a LS1 goes..that's small **** compared to what I got..
Originally Posted by -PEPE-
you need to come to Texas ...
no disrespect to you PEPE,i know there are fast Lt1s but the ratio is not in favor $4$....Texas has some of the fastest cars in the country
