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... :bang: . 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.

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.

all genIII/IV LS motors are small blocks despite there displacement.

all i gotta say is :drool:

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)

Thank you all for your replies. That helped out alot. I think i'll look for an LS2, although i would love an LS7. Thanks alot!

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.