Piston to valve clearance
 

What is everyone running for minimum valve to piston clearance on 350 ss motors?

Re: Piston to valve clearance
 

Hi Rick.I was hoping to see you in Miramichi.
How's than engine coming?
Terry K

Re: Piston to valve clearance
 

Hi Terry

I just bought a short block a couple of weeks ago, working away at it, ordered some valves and intake gaskets. Bowtie block this time. How many cars showed up Saturday? Talk soon Rick

Re: Piston to valve clearance
 

.100" is safe.

Re: Piston to valve clearance
 

Way safe for Intake valve.

Usually .090 on Exhaust and .040 on Intake.

Bigger the camshaft diameter equals less flex and you can tighten clearances.

Re: Piston to valve clearance
 

I like to run them till they touch, then back them off a little! :p

Re: Piston to valve clearance
 

What Sean said^^^^^^^^^
Mine has .036" intake & .075" exhaust right now, but I hesitate to tell somebody that becauseI don't know how sharp they are, and I don't want to hear "I bent some valves doing what you told Me!", and him having to ask that......
No valve marks on my pistons, but no carbon there either. Just clean aluminium.

Re: Piston to valve clearance
 

You got some pretty good advice there. Only thing that I will add is to make sure everything in the valve train is up to spec and closely monitored. Also check P/V clearance at least 10 degrees BTC and 10 degrees ATC at each increment and log the readings for future reference. I usually log every 2 degrees to 20 degrees both ways and furnish that with other records on an engine. Good record keeping can make maintenance much easier.

Re: Piston to valve clearance
 

What he said!

Re: Piston to valve clearance
 

23 cars