AutomagicLS1

iTrader: (18)

rods/pistons lq4. no need for a 6 bolt setup @ 1100-1200rwhp on the street using ls9 gaskets and studs

Fb0dy0nly

iTrader: (10)

if u read op's post he said he wanted something that would be overkill rather than something pushing the limits all the time...ie no stock block lq whatever. Contact an engine builder on here...AES , ERL have been mentioned and provide a good product from constant good reviews... If u want to be safe run something that has 6 bolt clamping abilities or at least o ring the heads/block.

TheLS1Lover

I would do a 6-Bolt setup, the Copper Head Gaskets in an O-Ring setup only last ~1200 miles (According to Brian at AES).

I8UR4RD

iTrader: (16)

I see no reason why you should be cautious to take a 4 bolt block with good studs and gaskets with a .750 deck over 1000rwhp.

You will just have to pay attention to cylinder pressures and timing. The overall setup will start coming into play.

Bob from Brutespeed did an LS2 CTS-V with an F1 PC which made low 800's on a mustang dyno on like 14-15#. Later on, when they removed the stock intake and put on a fast 92, boost dropped to 12#, however horsepower jumped to 864rwhp.


Obviously the power went up, because the pressure went down.

The same care apparently went to another dyno the same day and made more power.


In that sense the power is doable. But if your having to cram 20-25lbs its not gonna fly to long without pushing water.

LS6427

iTrader: (2)

Sleeve an iron LSX block...yes an iron block with sleeves. The ductile iron sleeves are way stronger than the grey iron the block is made from. But the support an iron block gives to the sleeves/cylinders over an aluminum block is HUGE. Ask Steve at RED, he's sleeved many iron blocks.

Use that and you'll never blow it up........it'll last you for 30 years......with multiple re-hones, re-bores and rebuilds.

.

Blackpanther99

iTrader: (8)

Its not the walls I have to worry about, its the pistons I use and the crankshaft.