lq4 6.0 valve springs

Reply Subscribe

Thread Tools

Search this Thread

12-19-2010, 07:04 PM

bigchief52780

Launching!

Thread Starter

iTrader: (10)

Join Date: Aug 2010

Location: eutaw,alabama

Posts: 259

Likes: 0

Received 1 Like on 1 Post

lq4 6.0 valve springs

does anyone know what the max lift on stock valve springs. these are on the 317 heads. i think they have a blue stripe on them. i want to know if i can run a ls6 cam with .525 lift.

Reply Like

12-20-2010, 09:56 AM

speedtigger

Old School Heavy

iTrader: (16)

Join Date: May 2010

Location: Florida

Posts: 8,830

Likes: 15

Received 68 Likes on 39 Posts

Quote:

Originally Posted by bigchief52780

does anyone know what the max lift on stock valve springs. these are on the 317 heads. i think they have a blue stripe on them. i want to know if i can run a ls6 cam with .525 lift.

I have seen dyno tests where these springs experienced premature valve float on stock camshafts before even reaching 6,000 RPM. I have also read that endurance and factory stock racers replace the valve springs with after-market as a matter of course.

From what I have read, I would deem them a trash can item.

Reply Like

Reply Subscribe