Thread: Adjusting valves on the ZZ430

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I guess I'll keep the Red Line for the 600 hp motor & keep using the Mobil1.
I don't like adjust valves w/ motor running- too messy. I prefer to do one cyl at a time- with motor off, turn motor over clockwise until exhaust just starts to open & adjust the intake. Then turn motor over until intake starts to close & set exhaust.
It's quick & no mess. That's how I do the 55.

Yes- I have all the paperwork on the motor- including the original sales receipt from Joe MacPherson Chevrolet in Irvine Ca for a total of $8005.83 7/14/99 Car wasn't complete until 2002.
I have the hat & jacket also as well as every receipt on build. Carb was changed to a Holley Street Avenger but I did get the original Holley in the Avenger box.

I've found the lash quotes all over the map.
One site gives this:
LT4 Hot Cam
1.6 rockers
I- 218
E- 228
I- 525
E- 525

Valve lash 0/0

These are numbers PO wrote on the paperwork also. I'd bet that's where these are set. That would be noisy!

I'm trying to confirm 0 or is it a 1/4 turn, 1/2 turn, 3/4 turn.

So far- everything I found, points to 1/2-3/4 preload. Big difference between that & 0.