texada

iTrader: (3)

What do you guys think the weight difference is between the new 6.0 iron block and GM's new LSX block? i am sure alot of people want to know.

ls1408cp

iTrader: (37)

I would love to know and when will the light one be available

Beast96Z

iTrader: (21)

I can't imagine it being to much heavier. It has the same general dimensions as the 6.0, but the bore is bigger, which means less iron on the LSX. I'm sure it is beefed up in other area's though.

Jason99T/A

iTrader: (21)

A bare LS1 block is ~95lbs.

A 6.0l block is around 100lbs heavier, so ~195lbs.

According to GMHTP, the LSx block is 225lbs. (standard deck block)

M6HuggerSS

thanks for the info!

BlackHawk T/A

iTrader: (3)

As was stated, I'll confirm the 225lbs for the standard deck LSX iron block. They did say though that an experienced builder could shave 20-30lbs off of it.

RAMPANT

iTrader: (17)

Correct me if I'm wrong but the LSX block comes with a 3.90" bore. If you bored each cylinder out to 4.20" you will be removing approx. 25-30lbs right there.

BlackHawk T/A

iTrader: (3)

The bore is 3.998, ready for honing to 4".

RAMPANT

iTrader: (17)

I used the 3.998 number this time and the 4.2 bore, using the lighter density of cast iron of .26lb/ci and a sleeve length of 6.1 inches you will remove 16.5 lbs by boring then.

It will change dependant on sleeve length, I made a conservative assumption that the piston I have for my LS2 with a 4.100 stroke and it has a 2.13 skirt, so a sleeve length of 6.1 since they are not square bottoms.

Density of cast iron ranges from 6800kg/m^3 to 7800. I used 7200. I had assumed it was more dense than steel and similar to SS that is approx .3lbs/ci in the original estimate with the smaller bore.

I don't do this stuff much anymore.

Mind you the bigger bore means bigger pistons too and likely valves so you will be putting weight back in with the actual build.

I have been watching this block closely since I really want to build a streetable 455ci motor, but weight is a concern for handling.

tlaselva

If big cube's your fancy, but weight's a concern like it is for me, the Warhawk block's your ticket.

383ss

iTrader: (14)

nah, I'd rather just do a wet sleeved LS2 and save a few $k unless you really want the priority main oiling and 6 bolt heads.

RAMPANT

iTrader: (17)

I'm keeping an eye on that block too, but it will have more bore limitations. I will only need NA if I can get those cubes. I like the nostalgic Ram Air 455 number.

I know not a great reason to go after that displacement, but thats the way I am.

The Warhawk does look like a nice peice though.

gun5l1ng3r

And I like the nostalgic 454 that Beast96Z has. Isn't it wonderful to finally get BBC cubes in a small block? My dream would be a Warhawk setup just like Beast's.

BlackHawk T/A

iTrader: (3)

They are talking about doing an LSX in aluminum. For the guys not running 30psi, or 1500+ HP, that will be the one to watch.

RAMPANT

iTrader: (17)

I have heard yes and no.

I hope you are right and that it can support the larger bores as well. That would be the ticket for sure. I won't be doing this this season the 412 has to work a little longer. For me the cheapest would be to use my rotating and the LS2 block at a 4.155 bore and 4.100 stroke but it still is not the magic 455 for me. 10ci's short.

vitamanz

iTrader: (4)

this month hitech has a 455 trans am

slt200mph

iTrader: (42)

I like your orange car..