Sure hope that's it, everything else is as normal as can be.
The 273 commando engine that car started life with had dome top pistons to make 10 1/2 to 1 compression. The block that Steve is using is a plain old 273 with flat tops. Wouldn't that give him even more valve to piston space?
Not unless he has over stock diameter valves. All the pistons have reliefs cut in the tops for valve clearance.
Double check the cam for free rotation before you install anything. Make sure it spins smoothly.
EDIT: Steve do you see any marks on the pistons where a valve may have touched it, check that while the heads are off.
We spun the motor over yesterday with rocker shaft assemblies removed, spins nice. Heads are on it, those block pics are from a week ago. Yep a 1 day project has turned into a never ending one....LOL
make sure you cant plunge that lifter with a pushrod.
Will dbl chk that, but if that was the case, you would think we would be having opposite problems??
As I said IF those were hydraulic lifters I believe you would need a shorter pushrod.
Bruce, intake is off and staying off until we get the valves set.
:thumrigh:
Is there a right or wrong way to install new lifters??
i suppose you could put them in upside down, lol.