I AM IN THE PROCESS OF BUILDING A 427/400 hp 1967 ENGINE AND I NOTICED THAT THE LIFTERS ARE NOT PERFECTLY LINED UP WITH THE CENTER OF THE CAMSHAFT LOBES,THEY ARE OFF TO ONE SIDE ABOUT A 1/16 TO 1/8 OF AN INCH. IS THIS NORMAL OR IS SOMETHING WRONG THANKS
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Re: BIG BLOCK REBUILD
Robert-----
I'd say that's within the "normal range", although 1/8" might be at the outside of it. As long as the camshaft sprocket is installed on the camshaft and the sprocket is nearly seated against the face of the block with the chain installed, where you're at has to be alright. If so, the engine had run this way for 35 years, since there's no way of changing or adjusting it. That's assuming, of course, that the front block surface where the camshaft sprocket contacts is not worn or "chewed up". This usually only happens if an engine has been previously fitted with a roller cam.In Appreciation of John Hinckley -
Re: BIG BLOCK REBUILD
this is normal as this is what causes the lifters to rotate,and because of the taper ground onto the cam lobes this causes the camshaft to be held to the rear of the block and prevent it from walking out of the block.Comment
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PS
roller cams are different,as they have their lifters directly in the center of the lobe and the cam itself must be held in position in the block by either a wear plate fastened to the block or a thrust bearing between the end of the cam and the timing chain cover.Comment
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Re: PS/PS
you can check the alignment of the 2 gears by placing a straight edge vertically on the face of the 2 gearsComment
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