i get so many different answers to this ? but ill put it out there to get an average on how much power stock blocks can handle..... so my question is as follows: how much power can a stock sleeve gsr, b16, LS block handle safely??? i was thinking along the lines of:
GSR-550hp
B16-400hp
LS-4-450hp

lmk wut u guys think........

 

Only stock sleeves? What about rods and pistons? Your question needs a little more defining.

 

Sleeves will break before anything else

 

I wouldn't put more then 350 on stock sleeves.

That is with a perfect tune as well.

To be really streetable and a daily driver that will last I wouldn't break into the 3s with a stock block. Thats just me being conservative and you saying "safely".

I have seen plenty of motors do more then that but that is not what you asked.

 

It's like gambling either you win or you dont I've seen stock sleeves into low 10 second quarter mile times

 

my bad: stock bottom end W/ ARP head studs.......

 

No, no, and NO! You also rated the B16 for LESS horsepower than a LS? Haha...

For stock bottom ends:

B16 - 350whp
B18C - 350whp
B18A/B - 300whp

Those are the upper limits and the tune better be perfect. Have they been pushed further than that? Yes, but they just don't last.

Stock sleeves with forged internals?

B16 - 450whp
B18C - 450whp
B18A/B - 450whp

This is about the upper limit of stock sleeves. The tune must be perfect and a cracked sleeve will eventually happen after a while. A while could me many years or a short time. That is the unfortunate side effect of mass production. Yes, they have been pushed further but this is the typical limit.

 

in stock botom end its all about the rods if u have acces to e85 or race gas and a good tuner! we all knw ppl r makein 600whp with aftermarket rods and pistons and stock sleeves its not about the sleeves
b16 rods r the strongest! good for 500+ when shot peend
gsr rods r good for about 450-470
ls rods r the weakest somewhere 350-380
tune must be onpoint

 

lots of good info here guys, i wanna go boost but im on a students budget so that kinda sux...... will E85 help in makin more power or the stock bottom end hits its limit around 350hp......sorry if i sound like a noob but im still learning, thnx for the patients guys.........

 

With E85, yes!

E85 burns slower which results in pulling a lot more timing at a WOT Load.

It allows the tuner to advance about 5-12 degrees of more timing at a certain boost
level(especially in vtec since dynamic compression drops), achieving greater torque/horsepower output as stated before.

Since you are new to the turbo game, I'd recommend sticking to a stock B Swap setup
and having fun at about 7-12 psi until you get the hang of what a turbo car is really
about.

If I were you, start looking into an Precision sc34. Great turbo for starters, got it
on my GSR.