How much boost can a stock block ls1 take?

[Sally 5.0!]

Just curious...

[Packy]

I have seen them make up to 15 psi with no problem! :D

[Calypso Coupe]

Originally posted by Packy
I have seen them make up to 15 psi with no problem! :D

I could probably spray a Honda Civic with a 200 shot once with no problem. Consistency is the key

[Packy]

Originally posted by CobraMike
I could probably spray a Honda Civic with a 200 shot once with no problem. Consistency is the key

There are people who run up to 15 psi with consistency too! I know it is hard to believe that it is not made by the same people who make the 03 Cobra motor, but it can take that amount of boost very regularly!:yup:

[ULTIMTEORANGESS]

ask rob raymer.:D

[Packy]

Originally posted by ULTIMTEORANGESS
ask rob raymer.:D

Yeah really! Click here below:

https://www.quartermileperformance.com/project-formulation.asp

[Jettison]

That link isn't working.:o

It's crazy to think of a 15psi daily driver. The stock pistons just can't take that kind of pressure.

Reality is more like 8.5psi max.

[Packy]

The link works for me! I am talking about the block when I say 15 psi! Not the stock pistons and rods.:eek: ;)

[Got Me SOM]

stock block can hold up to 24 lbs. The stock cast pistons can hold about 7-9 psi on a really conservative tune.

People can have stock blocks and forged rods/pistons so you must be specific if you're asking about the pistons/rods or just the block alone.

[Sally 5.0!]

I know someone that has something for Rob Raymer. :o

[408Ashman]

personally I would not run more than 9 lbs on a stock block if I wanted the motor to last....but that's just me. Some have run more without any probs, and some have run less with major probs....so take your chances ;)

[98_BlackZ28]

Originally posted by Sally 5.0!
I know someone that has something for Rob Raymer. :o

:rolleyes:
Just like this 921 hp Viper?
http://www.ls2.com/forums/showthread.php?s=&threadid=35908&highlight=Viper

[MIGHTYMOUSE]

intake pressure is not directly related to power handling capability.

[2fnfast]

sorry but i dont think i will push mine over 7lbs on the stock untill i get my iron block and stroaker next winter

[stealth]

Originally posted by Sally 5.0!
Just curious... Don't have a proven number for you, but I see that someone (W2W?) made 1150 hp through a stock LS6 composite intake. I'm guessing boost was around 25 lbs to 30 lbs.

[MIGHTYMOUSE]

i run 11-12psi daily on my stock block on 93 octane and 6-650rwhp.
it has been up to 16psi with the new turbosystem at 775rwhp and up to 30psi on my old set up.. (read my first post)