What is the most cost effective LS1 valve springs that will handle 609 lift "safely"?

 

Don't skimp on some thing like valve springs. .609 is some prety big lift.
https://www.patriot-performance.com/...&cat=51&page=1

https://ls1tech.com/forums/generation-iii-internal-engine/988306-valve-float.html

 

Call TSP and get the PRC spring kit.

 

Depends.... are you only talking about a 224 XFI lobe?

 

Is PRC the patriot springs also? ..

 

PAC 1518.... the beehive design offers superior valve control, some people dont like single springs as they are paranoid about breakage. PAC say it's not an issue with their springs. I have 1518's for $265 delivered

 

Do they guarantee the spring wont fail for a .600 + lift ??

 

The spring is rated to .650 lift and is nitrided. It is a true premium valve spring and should be selling for $100 more than I have them offered for. Check out PAC website and see what their prices are on them.
In addition its a true drop in replacement. No seat or seal changes needed and it will use your stock retainer... true drop in replacement

http://www.pacracing.com/Beehive_Spr...Set_of_16.html

http://www.pacracing.com/beehive.html

 

The cam specs are: 226/232 604/609 113+2 LSA

I take it 918's are out?

 

Yes 918's are out. You need a spring good to .650 lift

 

hmmmm....

 

PAC also has all the double and triple springs in the world as well but when I spoke to them and specifically asked what would be best they said the 1518 over the 921 double spring. I spoke at length with them about it. You should call them and ask for yourselves
866-799-9417. I had posted my conversation with them and the specific questions I asked but I cant seem to find it. Anyway I posted the main points in this thread from the conversation. Breakage they said is not an issue.

 

The cam I am installing this weekend is the same specs. I went with the 1518's

 

I Would Run The Manly Nextec Springs! W/titanium Retainers

 

+1 on the Patriot dual valve springs would be great for that lift i just put them in my bird the other day