604 Valve Lash

[mjs48]

Can anyone tell me the valve lash for the intake and exhaust valves on a GM 604 crate?

Thank You

[Matt49]

Zero
Hydraulic lifter motors do not require any valve lash

[BTDT]

I am told plus 1/2 turn by someone who knows!

[Matt49]

Brad Hibbard has some good instructions on his site.
Scroll down to the section on valve lash but this page is full of good information for crate motors.
http://race-1.com/faq-2/crate-engine-faq/

[Egoracing]

Brad Hibbard has some good instructions on his site.
Scroll down to the section on valve lash but this page is full of good information for crate motors.
http://race-1.com/faq-2/crate-engine-faq/

Really good info!