the most powerfull CHEVY block

**ahmadooo** · 11-13-2009, 06:39 AM

Hi every one ....
is there any displacement difference in the famous 454 ci and the all new LSX ? and how many freaking horsepower does every engine has ?

**shady milkman** · 11-13-2009, 06:58 AM

well the lsx and the 454 can have the same displacement...the lsx block itself doesnt make horsepower ..as it is only the block...so
a 454 lsx block will and should make much more power then the 454...technology is a great thing..more specifically the head design and block oiling and venting...

offically the ls6 454 was rated at 450..but i have heard from old gearheads that it actually pumps out close to 550.....

to give you a comparison the ls7 that is in the z06 makes 520ish.

since no car has came stock with a lsx 454..its hard to make horsepower estimates since a lot of aftermarket parts will need to be used ..but look for conservatively 600+ horses ..and i mean conservatively

**DIRTY JERZY** · 11-13-2009, 07:02 AM

lsx block is built to withstand 1200 hp 1000 tq

a ls1 block is built to withstand about 600 hp

**shady milkman** · 11-13-2009, 07:05 AM

Originally Posted by DIRTY JERZY

lsx block is built to withstand 1200 hp 1000 tq

a ls1 block is built to withstand about 600 hp

ehh you might want to check your facts...

**shady milkman** · 11-13-2009, 07:11 AM

ls alluminum blocks can handle around the area of 1000rwhp ...the internals are a issue. the crank alone was designed to handle 1000fwhp ..the rods and pistons are another story (ls1 we are talking about)

**DIRTY JERZY** · 11-13-2009, 07:14 AM

the ls1 mains are what I was talking about after 700 they become questionable

at least thats what I have been lead to believe

**shady milkman** · 11-13-2009, 07:16 AM

my bad...i guess i mispoke slightly..ls2's have been playing in the 1000 club.

**DIRTY JERZY** · 11-13-2009, 07:18 AM

its ok we are all here to help each other out

**Zinergy** · 11-13-2009, 07:21 AM

The ls1 engine can handle 700hp reliably, but has been taken to the 1k+ range. The lsx is rated much higher than 1200hp, it has been tested past 2000hp.

**DIRTY JERZY** · 11-13-2009, 07:31 AM

cool I was going off old info on the lsx before it was released

**danziger** · 11-14-2009, 03:09 AM

Tall-deck big-block Chevys can be taken over 700 cubic inches and can make over 3000HP. While the LSX isn't quite there yet, I've seen a couple shops/racers get around 1800HP...