How much cam for a 265 SBC Gen 1?

Mike Taylor 3601 · 11-02-2012, 08:51 PM

I would check with a soft spring and open valve to max lift then add feeler gauges to be sure I had at least .050 clearance between valve and cylinder.
Piston to valve clearance will be closest about 10 btdc and 10 atdc depending on lobe sep.,centerline,duration.
A easy way to remember is piston chases ex valve closed and in valve chases the piston down @ their closest points.
If this is a stocker the valve to cylinder should'nt be a issue,but piston to valve clearance will be.
Mike Taylor 3601

11-02-2012, 08:51 PM	#7
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,371 Likes: 352 Liked 306 Times in 103 Posts	Re: How much cam for a 265 SBC Gen 1? I would check with a soft spring and open valve to max lift then add feeler gauges to be sure I had at least .050 clearance between valve and cylinder. Piston to valve clearance will be closest about 10 btdc and 10 atdc depending on lobe sep.,centerline,duration. A easy way to remember is piston chases ex valve closed and in valve chases the piston down @ their closest points. If this is a stocker the valve to cylinder should'nt be a issue,but piston to valve clearance will be. Mike Taylor 3601