i purchased a cam from mummert for my y-build and it has the grooved journal now the block i am using is a 63 c2ae truck block and the cam that came out of the block was only drilled is it ok to use the grooved or am i going to have tochange cam bearings also as i thought the 56 up was all grooved

y-block newbie

Some of the later Y blocks used drilled cams, I juess they were just using up a stock of blanks. I assume that you have replaced the bearings, in which case they sould work fine with the grooved cam.

Glen Henderson



Freedom is not Free

Letohatchee, AL

you only need to change the center bearing but you have to buy the whole set.

The grooved journal camshaft will work fine with the ‘cross drilled’ cam bearings.  There is no need to change the ‘cross drilled’ cam bearings if they are in good condition and properly aligned with the holes in the block as they will oil the topend fine when used with the center grooved camshaft.  Just make sure that the camshaft groove itself is deep and wide enough to prevent ‘down the road’ oiling problems as the camshaft wears into the center cam bearing.

Lorena, Texas (South of Waco)

thanks  all!!

y-block newbie