chevybayboy

iTrader: (6)

OK guys I'm having a hard time deciding which short block to get I'm back in forth between 5.7 aluminum with forged pistons or 6.0 iron with forged pistons.. there both rated to hold about the same hp just dont know what i should get i am thinking about throwing spray i
At it not 100% on it, but my parts are in my sig

wildcamaro

iTrader: (15)

If heavy spray to with iron...if you wanna handle better go aluminum...to me the aluminum is one of the biggest advantages of LS engines

chevybayboy

iTrader: (6)

Ok I think I'll roll with that i do want to handle better ... I'm not going to heavy on the spray maybe 100 2 150 shot

ryridesmotox

I think you need to ask yourself what you want to do with the car. If you want a 1/4 mile or roll racing beast go big iron, if you want a track day car, go aluminum.

Burken01

iTrader: (88)

If your not going to do FI anytime in the near future and are just planning on a 100-150 shot then keep your aluminum engine... it will handle what your planning just fine..

ryridesmotox

Psssh go big or go home... 6.0 with a 300shot lol... Break rear ends like its your job

lemons12

iTrader: (71)

6.0 will allow a much wider variety of head selection.

chevybayboy

iTrader: (6)

Yea daily maybe a little street racing, but I blew the button end already I'm getting forged pistons forsure

chevybayboy

iTrader: (6)

Yea I doubt I even go that route I'm thinking the 5.7 aluminum with forged pistons with a 150 shot

chevybayboy

iTrader: (6)

Lmao that's what my dad was saying but I don't want to lost handling lol 300 shot insane lol

chevybayboy

iTrader: (6)

Yea I was hearing that as well I have ported 243s tho that should be good for what im trying to do?

ryridesmotox

In all seriousness let me add 2 coherent complete thoughts. #1 the iron block isn't THAT much heavier. Its like 100lbs+/- or somethin. #2 the cost is obviously going to increase the build if you go iron. The aluminum block will handle a good amount of power also. Unless you are trying to.build a 9second monster of epic destruction just save the money on the block and keep the aluminum I think.

lemons12

iTrader: (71)

It is 110-115#, that is a lot of weight on the front.

Iron is cheaper than aluminum.

thunderstruck507

iTrader: (18)

IMO unless you are doing FI, upgrading the iron to much larger than stock, or simply need to do so for cost reasons the aluminum block wins hands down.

JakeFusion

iTrader: (7)

It's 110lbs heavier, but allows for better heads or more flow out of smaller bore heads. It's essentially a .1 penalty over aluminum, but for all intents and purposes, the same heads and cam will make another 15-20hp on the 6L block, so it makes up for it.

Sure, it's heavier for stopping and handling, but the engine sits so low and so far behind the front wheels, the weight shouldn't be noticeable...

ryridesmotox

Yea but he still has the aluminum block. Or that's the impression I got from his first post.

thunderstruck507

iTrader: (18)

Maybe I'm scarred by poor real world results. I've yet to see an n/a 6l build outperform a similar ls1 combo but it could just be bad combos.

There is one local with a ported head, MS3, th350 combo that is only running a few tenths faster than mine...on a 100shot.

JakeFusion

iTrader: (7)

Well, when you look at head/cam LS2s for example, they make more torque than LS1s and generally more HP out of the same cams. Usually by a good bit.

I think folks use the 6L block and use it as a cheap way to put together a **** poor combo.

Now, if I got my hands on a 6L block... I think I could make 520rwhp... Hmmm

PREDATOR-Z

I went through this process in 2007 when my LS1 took a crap (5 & 7 ringland, nitrous spike).
So I thought the same and got a 4.030 iron block. Well when all said and done, that extra weight was painful. Had to redo the suspension (which transferred fine when LS1), transfer the battery to the back etc...
Moral is I regret not having stayed aluminum. Now for 408+ cubes, that is antoher story.

JakeFusion

iTrader: (7)

You're in a vette tho? Not a wallowing F-Body boat car.