Well, the whole motor is odd - a 1953 block, with a 54 235 head. The head was removed awhile back, and I was getting everything "rounded up" to work on it. I noticed one of the head bolts is :"shaved" length-wise. I have no idea which hole it came out of, nor do I know the reason it has been shaved down. Anyone have a clue???
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum
A shade tree method of accomplishing the same rocker arm oiling as the drilled head bolt is to grind a flat spot on the threads of the center head bolt on the passenger's side, or cut a slot in the threads with a cutoff wheel in a Dremel tool or a small angle grinder. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Why cut a slot in the threads? The oil from the block doesn't come past the treads from what I have seen....
The drilled bolt provided a path for oil to get past the threads. A slot would accomplish the same thing.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
The 55 and up 235-261's I have seen, quite a few, have an oil passage next to the center bolt threads...then it crosses over via a cut out in the head gasket and then up past the bolt shank, not the threads...Look at a bare block and trace the oil pathway...
