THE_SUPRA

can an oem ls1 block handle 1000rwhp? assuming that the motor is put together correctly: forged internals, billet main caps/girtle, motorplates, arp fastners, etc.

can it be done and could you expect any kind of longevity from the motor?

J&J Speed Shop

iTrader: (8)

I would say that would be pretty hard to do on a stock sleeve LS1 block. You are talking around 1200 flywheel. Not saying it can't be done, but it most likely will not last for long

Turbo LS1 SS

iTrader: (7)

maybe i should try it out this year

THE_SUPRA

what is the first thing to go on the stock aluminum block?

i know the heads can push off...but i think that is the 4-studs per cylinder issue not the composition of the block...

Turbo LS1 SS

iTrader: (7)

on the contrary...i think it is the composition of the block, or as jayz was sayin, the sleeves. how "secure" the heads are to the block is one thing, the material holding up to the cylinder wall pressures is another. best bet is to go Fe if ur makin that much power

THE_SUPRA

but iron is so heavy! is there a way to resleve the block with a stronger material?

not to sound like an idiot, i know 1000 whp is almost unusable on a road course... but what if some one wanted to build a double crown F-body?
1000+whp and 1.00+lateral g on the skid pad.

THE_SUPRA

how are the c5-r blocks so much stronger?

Turbo LS1 SS

iTrader: (7)

is this what you are looking for

http://store.jandjspeedshop.com/prod...roducts_id=294

THE_SUPRA

giggity giggity!


how much would that cost for a machine shop to do on an oem block?
...just for conversation sake

Turbo LS1 SS

iTrader: (7)

more than it would cost u to just buy the one i listed! do it, do it! i dont know the exact cost, but for one thing they'd need to know what they are doing, and you would most likely be payin more than a premanufactured block. its a pretty pimp setup, made to handle ALOT.

THE_SUPRA

verry cool stuff! just asking as a hypothetical kind of deal...but i do think someone needs to grow some olives and try it

J&J Speed Shop

iTrader: (8)

You are talking 1000 rwhp, another 70 lbs. is a drop in the bucket for the Iron block

Texas_WS6

iTrader: (9)

How much will an Iron block handle? With standard bore or with 0.030 ocer bore?

black_z

iTrader: (4)

DIdnt Harlan use an LS6 block?

THE_SUPRA

i know he ran high 8s...what was he putting down power wise

Bad Habit Bird

iTrader: (12)

actually it was low 8's and I think it his car made roughly 1200rwhp.

slowpoke96z28

iTrader: (2)

they need to grow a money tree first.

93formto98T/A

iTrader: (28)

In effect, that is what I am in the process of building right now. Roadrace fbod w/1000hp and great handling.

As for the block, it has been done before but without any long term feedback. The first thing to go on the ls1 blocks is the thin sleeves due to detonation. Also the 98 ls1 blocks have a thinner sleeve than the 99+ blocks. So when me and GMR were discussion engine option for the Twin turbo kit I told them iron block all the way(I had a 98ls1 motor). I did have to give up a few pounds but the iron block is TWO FOLD stronger than the alum ls1 block. When you're sinking all kinds of money to reach 1000hp why not carry the iron block as an "insurance policy". Just my .02$

kpforce1

iTrader: (9)

The aluminum block is a major liability at 700+rwhp... Id go for the iron block as well.

y2khawk

iTrader: (5)

That's funny, the block and pistons that pushed my car over 170MPH are now in my daily driver truck. 30k miles on it so far.