WildBills Toyota

iTrader: (1)

How much power can the ls1 stock block really handle? Like the new t-rex cam makes 450 rwhp. Is that safe for stock block? At how much power gets to be a problem with ls1 block?

chetyg

the short block prolly wont hold much more than 550rwhp i know i wouldnt feel safe with that much power on the stock shortblock. im gonna keep my stock short block and gonna have about 570rwhp with spray and see how long it last just for the heck of it.

Ben R

I'm not EXACTLY sure on power-levels, but the stock LS1 short-block is strong enough to make quite a few 9 second passes.

I've seen 2 friends make 600RWHP reliably for over 2 years on a stock short-block.

WildBills Toyota

iTrader: (1)

so, 450 will be just fine for stock block right?

rons 00z

iTrader: (10)

if you ask me it seems to handle a good amount of power.
https://ls1tech.com/forums/forced-induction/140614-qmp-formula-meets-its-end-tonight.html

chetyg

yeah 450 is gonna be no problem. are you gonna put the t-rex cam in your car? that suckers gonna be rufff for daily driving

CHRISPY

People have run close to 800RWHP (900FWHP) on the stock block.

450 is a walk in the park especially NA

70ls1pu

My buddy melted his pistons at about 630RWHP on the spray on the first run. He was running around 550RWHP for about 6 months with no problem.

BOO HOO BRIAN

iTrader: (-10)

I dont think anybody has reached the limits of the stock block. Everyone that has broken one has been due to other factors . I think the days of a 1000 rwhp stock block ls1 will be here within the year.

TEA Brent

We made 690 to the tires and that was blowing through the convertor. I think they are pretty strong.

AZ Power & Sound

iTrader: (2)

I dont have any dyno numbers but with a LS6 crate engine, G5X3, some other mods and a 175 shot im sure im in the 600 neighborhood... Im more scared about rod bearings or melting a plug than what the block will hold!