How much hp can stock lsj valves take?Thanks

 

bump

 

NOt sure on how much power, but i know alot people perfer keeping OEM valves over aftermarket no matter what power they are putting down. The OEM are great as they sit

 

You're going to need better roller followers and lash adjusters before you need to worry much about the valves themselves. The only reason any of those are a big issue is very high rpm (above 8000) or very high lift (custom camshafts), which very few people have bothered with.

 

Stock valves can handle a large amount of power. Into the 500's, from what I remember. They're very good quality. Sodium Filled, iirc.

 

Thanks for the reply guys,much appreciated