2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

lsj head on le5 block

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Old Jul 16, 2008 | 12:41 PM
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lsj head on le5 block

hey guys i just need to know if the lsj head would be a direct bolt up to the le5 block; and has anyone done this and if so how did you like it?
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Old Jul 16, 2008 | 12:44 PM
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yes it does, use the search on here, one guy did a franken-motor swap in his redline.
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Old Jul 16, 2008 | 12:52 PM
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Originally Posted by 06blackg85ss
yes it does, use the search on here, one guy did a franken-motor swap in his redline.
can yousend me the link? i tried looking for it b4 i made the thread but i couldn't find it
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Old Jul 18, 2008 | 03:39 PM
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yea i was wondering the same thing
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Old Jul 18, 2008 | 03:44 PM
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checkout the redline forums, the guys screen name is fullthrottle search and ye shall find
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Old Jul 19, 2008 | 10:21 AM
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I really don't understand how it will fit but then again I haven't seen his post. I thought there was always a problem because the 2.4's have the VVT. Now with that said I'll do some searching myself and I'll go learn something.
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Old Jul 19, 2008 | 10:31 AM
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all three motors are very similar, if you look at the valve cover's they only look different on the tops. the Ecotec is a "family" motor
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Old Jul 19, 2008 | 10:34 AM
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Originally Posted by ls1fbody
all three motors are very similar, if you look at the valve cover's they only look different on the tops. the Ecotec is a "family" motor
Which I understand that, I wanted to swap the 2.4 for the LSJ for the longest time just because it was polished but then found it you couldn't because of the VVT components not fighting properly.
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Old Jul 19, 2008 | 10:39 AM
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yeah, i'm not sure, but because the LSJ doesn't have the VVT like the 2.4, i don't see a problem with the LSJ head on a 2.4 block, the VVT is all in the head.
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Old Jul 19, 2008 | 10:50 AM
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Originally Posted by ls1fbody
yeah, i'm not sure, but because the LSJ doesn't have the VVT like the 2.4, i don't see a problem with the LSJ head on a 2.4 block, the VVT is all in the head.
Dunno? I never really read much on it, I just chose to polish my 2.4 cover.
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Old Jul 19, 2008 | 11:54 AM
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the reason they say you cant swap motors is because everything would have to be redone, from the ecm to the pcm and up
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Old Jul 19, 2008 | 11:57 AM
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Originally Posted by mike25
the reason they say you cant swap motors is because everything would have to be redone, from the ecm to the pcm and up
Well of course, that's a given. But we were talking about valve covers/heads.
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Old Jul 19, 2008 | 12:25 PM
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Originally Posted by mike25
the reason they say you cant swap motors is because everything would have to be redone, from the ecm to the pcm and up
WRONG he used the pcm from his 2.0, there were a couple of things that needed to be changed though for his anyway He wanted to use his exedy stage 3 clutch but the flywheel wouldn't bolt to the le5 block so he had the holes filled and drilled to match. after it was all said and done with the m62 on it and a 3inch pully he put down 265whp and 290ish tq. he had one dyno of over 300 but it did not print and was on a crazy ass tune. So trust me I helped build that motor i know it can be done. this peticular motor was built for a big ass snail shell anyway. a guy on here chevytech007 bought the motor and trans from fullthrottle when he traded in his redline, only paid 1000 for it.

here are the dyno numbers
https://www.cobaltss.net/forums/2-4l-le5-performance-tech-46/mvps-official-le5-lsj-2-4-dyno-numbers-100441/

build thread on .net
https://www.cobaltss.net/forums/2-4l-le5-performance-tech-46/official-fullthrottle-build-thread-53093/

and here is the build thread from redline forums
http://www.******************/forums...t=fullthrottle


stop being so lazy and use the search button i found this info in 5 minutes.

Last edited by stryder; Jul 19, 2008 at 12:25 PM. Reason: Automerged Doublepost
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Old Jul 19, 2008 | 04:36 PM
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Originally Posted by mike25
the reason they say you cant swap motors is because everything would have to be redone, from the ecm to the pcm and up
Electronic control module and powertrain control module are the same thing, just different names. So other than the pcm what else has to be switched assuming that the vehicle is manual before the swap and u dont have to worry about programming a transmission control computer?
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Old Jul 19, 2008 | 05:02 PM
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Originally Posted by stryder
WRONG he used the pcm from his 2.0, there were a couple of things that needed to be changed though for his anyway He wanted to use his exedy stage 3 clutch but the flywheel wouldn't bolt to the le5 block so he had the holes filled and drilled to match. after it was all said and done with the m62 on it and a 3inch pully he put down 265whp and 290ish tq. he had one dyno of over 300 but it did not print and was on a crazy ass tune. So trust me I helped build that motor i know it can be done. this peticular motor was built for a big ass snail shell anyway. a guy on here chevytech007 bought the motor and trans from fullthrottle when he traded in his redline, only paid 1000 for it.

here are the dyno numbers
https://www.cobaltss.net/forums/showthread.php?t=100441

build thread on .net
https://www.cobaltss.net/forums/showthread.php?t=53093

and here is the build thread from redline forums
http://www.******************/forums...t=fullthrottle


stop being so lazy and use the search button i found this info in 5 minutes.

looks like you were wrong in the tq department. lol

the car put down 262 WHP @ 6,300 RPM and 248 WTQ @ 4055 RPM

He later posts....

we actually pushed the car harder then that and the TQ numbers approached the 300 mark and the WHP was around 280+ but it was knocking bad. so with the 2.5 oully and meth im going back and im going to tune again and run her.

Last edited by ralliartist; Jul 19, 2008 at 05:02 PM. Reason: Automerged Doublepost
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Old Jul 19, 2008 | 05:04 PM
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you should be able to fit any head on any block
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Old Jul 19, 2008 | 06:16 PM
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Originally Posted by ralliartist
looks like you were wrong in the tq department. lol

the car put down 262 WHP @ 6,300 RPM and 248 WTQ @ 4055 RPM

He later posts....

we actually pushed the car harder then that and the TQ numbers approached the 300 mark and the WHP was around 280+ but it was knocking bad. so with the 2.5 oully and meth im going back and im going to tune again and run her.
sure you got me there but he did so put down over 300 hp and around maybe 286ish tq if ya wanna be so **** about it. like i said it was a crazzy ass tune that was put on his car, mike elected to keep it toned down to the 265 hp since he was only using the eaton to break the engine in and then bring out the turbo. there are things that he showed and told me about that he will not post on the forums about the three of four other pulls that he had on the dyno. He never got to go back with the 2.5 pully on though thats to bad too. all in all it doesnt matter I am sure if anyone else decided to do this swap he would be more than helpful to produce part numbers and info to help you along. its a pretty powerful combo and has great potential.

Originally Posted by FASTL61
you should be able to fit any head on any block
kinda like honda's huh lol

Last edited by stryder; Jul 19, 2008 at 06:16 PM. Reason: Automerged Doublepost
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Old Jul 19, 2008 | 11:48 PM
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Only thing is, Fullthrotle was a LSJ got to a franking LE5 bottom end with the LSJ head. So he was just uping the displacement. For Us we have the LE5 from the get go and have the ECM provisioned for VVT which at this moment we can not just turn off in the tune. Since he never had VVT he did not have to worry about that. We "could" bolt the head on no promblem but the car would freack not being able to phase the cams.
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Old Jul 20, 2008 | 12:00 AM
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Originally Posted by stryder
WRONG he used the pcm from his 2.0, there were a couple of things that needed to be changed though for his anyway He wanted to use his exedy stage 3 clutch but the flywheel wouldn't bolt to the le5 block so he had the holes filled and drilled to match. after it was all said and done with the m62 on it and a 3inch pully he put down 265whp and 290ish tq. he had one dyno of over 300 but it did not print and was on a crazy ass tune. So trust me I helped build that motor i know it can be done. this peticular motor was built for a big ass snail shell anyway. a guy on here chevytech007 bought the motor and trans from fullthrottle when he traded in his redline, only paid 1000 for it.

here are the dyno numbers
https://www.cobaltss.net/forums/showthread.php?t=100441

build thread on .net
https://www.cobaltss.net/forums/showthread.php?t=53093

and here is the build thread from redline forums
http://www.******************/forums...t=fullthrottle


stop being so lazy and use the search button i found this info in 5 minutes.
WRONG. it is my fault i didnt clarify but i think someone got a little ass happy to try and make me sound like an idiot. i was stating that to put a full lsj motor into a standard ss(2.4), or a whole le5 into a ss/sc, then you would have to switch the pcm and what not. so basically, quit being a ******* newb and stop assuming.

btw, my statement of everything having to be redone includes him having to fix small things such as the flywheel assembly
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Old Jul 20, 2008 | 04:28 AM
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whatever man all im saying is it can be done and its really not that hard at all. if you have a 2.4 and want to drop and lsj in your car then yeah you would have to have your pcm or computer reprogrammed. I didn't try and make you sound like an idiot...you did that one all on your own.

Originally Posted by mike25
WRONG. it is my fault i didnt clarify but i think someone got a little ass happy to try and make me sound like an idiot. i was stating that to put a full lsj motor into a standard ss(2.4), or a whole le5 into a ss/sc, then you would have to switch the pcm and what not. so basically, quit being a ******* newb and stop assuming.

btw, my statement of everything having to be redone includes him having to fix small things such as the flywheel assembly
don't get ass hurt. it sounds like your the nooob. Im not ASSuming anything. So go grab a coke and a smile. there is no need for you to be acting like a A hole.

Originally Posted by REDFOCZ
Only thing is, Fullthrotle was a LSJ got to a franking LE5 bottom end with the LSJ head. So he was just uping the displacement. For Us we have the LE5 from the get go and have the ECM provisioned for VVT which at this moment we can not just turn off in the tune. Since he never had VVT he did not have to worry about that. We "could" bolt the head on no promblem but the car would freack not being able to phase the cams.
He actually did a little more than that. not really that big of a problom just find a clean ECM from a ss/sc and your golden.

Last edited by stryder; Jul 20, 2008 at 04:28 AM. Reason: Automerged Doublepost
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Old Jul 20, 2008 | 04:28 AM
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Originally Posted by stryder
checkout the redline forums, the guys screen name is fullthrottle search and ye shall find
hey luke are you online right now?
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Old Jul 20, 2008 | 04:32 AM
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yeah cole i am

got some dude in here crying cus i he made himself look dumb

Last edited by stryder; Jul 20, 2008 at 04:32 AM. Reason: Automerged Doublepost
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Old Jul 20, 2008 | 04:56 AM
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Originally Posted by stryder
yeah cole i am

got some dude in here crying cus i he made himself look dumb
hahahahaha, i know dude.
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Old Jul 20, 2008 | 10:07 AM
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why wud u want to put a lsj into the 2.4..kind of pointless if ur not going to boost it..the 2.4 has the better displacement..and really why would u want to do that anyway.....just go buy a 2.0ss/sc with the lsj already in it
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Old Jul 20, 2008 | 11:41 AM
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Originally Posted by iLLmaTic3s
why wud u want to put a lsj into the 2.4..kind of pointless if ur not going to boost it..the 2.4 has the better displacement..and really why would u want to do that anyway.....just go buy a 2.0ss/sc with the lsj already in it
Check it. You can go out and buy a n/a ss model and turbocharge it for ABOUT the same amount of money as you can buy an ss/sc stock. Then the 2.4 will walk allll over that ss/sc even with mods. Then there will be a big on ur face for miles to come
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