Please explain LS's
Thread Starter
Teching In
Joined: Jul 2006
Posts: 35
Likes: 0
From: Topeka, KS
Please explain LS's Hi. I am new old school member of this site. And all the LSx stuff is kinda confusing. Is it just me or did i see an LS2 that is a 454 big block and others are small blocks. Could someone kindly explain the ends and outs of these engines. I am about ready to make my first LSx purchase and am as confused as ever. I am just used to all the 350 stuff fitting on other 350's... 
. Thanks for your time.
. Thanks for your time. If you saw a LS2 454 it is infact a small block.
I know MTI sells a 455 LS2 small block for a GTO package.
Big Bronco is building a 500 cubic inch LSx based small block at SAM.
I know MTI sells a 455 LS2 small block for a GTO package.
Big Bronco is building a 500 cubic inch LSx based small block at SAM.
Joined: Apr 2006
Posts: 3,910
Likes: 1,158
From: Grand Rapids, Michigan
Actually... back in the 70's the LS designations stood for different power level 454's, there were LS2, 3, 4, 5, and 6, as well as an LS7 crate 454. Although, I believe LS2 designated a 402 cube big block.
I think ALL of you just confused him more.
All small blocks, all aluminum
LS1- 346 CI (5.7L)
came in:
98-02 Camaros/trans ams
2004 GTO's
97-2004 Corvettes (not Z06's)
LS6- 346 CI (5.7L) Same block as the LS1, but better flowing heads and a slightly bigger cam
came in:
2001-2004 Corvette Z06
Cadillac CTSV
LS2- 364 (6.0L) Similar block to the LS1/LS6, but bigger bore, giving it a few more cubic inches. These engines are commonly stroked to a 402/408. The heads are Identical to the heads on the LS6
LS7- 427 CI: 500 hp new ZO6 motor, It is based off of the LS motor series, but most of the parts arent as interchangable as the previous 3 I mentioned
There is also the LS4 which is the v8 in the new Impala SS's, but I do not know much about those (they are front wheels drive)
All small blocks, all aluminum
LS1- 346 CI (5.7L)
came in:
98-02 Camaros/trans ams
2004 GTO's
97-2004 Corvettes (not Z06's)
LS6- 346 CI (5.7L) Same block as the LS1, but better flowing heads and a slightly bigger cam
came in:
2001-2004 Corvette Z06
Cadillac CTSV
LS2- 364 (6.0L) Similar block to the LS1/LS6, but bigger bore, giving it a few more cubic inches. These engines are commonly stroked to a 402/408. The heads are Identical to the heads on the LS6
LS7- 427 CI: 500 hp new ZO6 motor, It is based off of the LS motor series, but most of the parts arent as interchangable as the previous 3 I mentioned
There is also the LS4 which is the v8 in the new Impala SS's, but I do not know much about those (they are front wheels drive)
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TECH Enthusiast
Joined: Sep 2004
Posts: 642
Likes: 0
From: Quad Cities, IL
If your looking for a motor. Look to the site sponsors for a forged short/longblock.>>>>
I dont know if you read hot rod but if you want to stay old school with these motors, they still make huge power. Victor jr intake, demon carb, msd box, (insert LSX longblock of choice) = 500+ all day.
I dont know if you read hot rod but if you want to stay old school with these motors, they still make huge power. Victor jr intake, demon carb, msd box, (insert LSX longblock of choice) = 500+ all day.
