LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

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Old Mar 4, 2009 | 08:49 PM
  #1  
SDIF's Avatar
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Posts: 544
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From: Aiken, SC
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

I read the following in another post an am considering an LS swap for my 91 street car.

"I'm wanting an LS2/LS3 and NOT an LS1/LS6 because I'd like to be be able to use the newer L76/L92/LS7 stuff to get more power in the future".

What is the difference in these engines. what are the pro and cons and potential of each. I would want to do the best I could.

I believe that I can fab or have fabed anything that is needed to include headers. I am good at wiring. I would want to keep a manual trans.
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Old Mar 4, 2009 | 08:53 PM
  #2  
xpndbl3's Avatar
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

differences: displacement, wiring harnesses, heads, cams, etc.

price.....ls1 engines are half at least of a ls2 or l3

5.3L and 6.0L engines are even cheaper and could use either harness depending on year.
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Old Mar 4, 2009 | 09:41 PM
  #3  
SDIF's Avatar
Thread Starter
Senior Member
 
Joined: Oct 2003
Posts: 544
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From: Aiken, SC
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
Re: What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

Any more detail??
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Old Mar 4, 2009 | 10:22 PM
  #4  
xpndbl3's Avatar
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Joined: Jan 2002
Posts: 13,622
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

sure look around on google, not really planning on typing out a page when it's readily available info.
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Old Mar 4, 2009 | 10:41 PM
  #5  
J's T/A's Avatar
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From: Idaho Falls
Car: 82 Trans Am
Engine: LTX
Transmission: T56
Axle/Gears: 3.42 strengthed 7.5 inch
Re: What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

No need for the info.. Provided the budget will support it go LS3 and be done with it.. specifically the gmpp ls3/480 pretty good deal, good power, mileage etc.. get the matching computer and harness, throw a t56 behind it and you are pretty much done.

some nice combos can also be seen at www.mastmotorsports.com , spendy though.

IMO to do it with an LS3 properly will take about 10k.. do you have the coin?
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Old Mar 5, 2009 | 09:44 AM
  #6  
87tpi350,6spd's Avatar
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Joined: Sep 2006
Posts: 215
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From: Allentown, PA
Car: 87 Trans am
Engine: 350tpi
Transmission: 6spd
Axle/Gears: 4.10
Re: What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

a real quick short list. From what Ive read is this crankshaft relucter is different number of teeth on ls1 to ls2 and knock sensors are in difrent locations. l92 usees a compleatly diffrent intake to work. I will eventualy be building a 6.0 lkq engine similare to ls1 with l92 heads and l76 intake for my swap if I ever get some cash.
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Old Mar 5, 2009 | 09:38 PM
  #7  
SDIF's Avatar
Thread Starter
Senior Member
 
Joined: Oct 2003
Posts: 544
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From: Aiken, SC
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
Re: What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

Thanks guys. I was going to go look for a good donor car truck etc from junkyard.

I just dont know what to look for.
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Old Mar 5, 2009 | 10:55 PM
  #8  
Shift06's Avatar
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Joined: Aug 2006
Posts: 807
Likes: 2
From: Ontario, Canada
Car: 1991 Trans Am GTA
Engine: LSX (swapping)
Transmission: 4L60E (swapping)
Axle/Gears: 2.73 Posi 10 Bolt
Re: What is different about LS2/LS3 vs LS1/LS6 vs LS76/L92/LS7?

Look for wrecked LS1 fbodies, or trucks if you go the 5.3 / 6.0 route.
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