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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Feb 2004 Posts: 29,782 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,782 | Currently, I don't have a late production 235 engine disassembled, one of the ones that came from the factory with an oil passage for hydraulic lifters. I've read somewhere that all blocks from around 1958-62 had that passage, even the truck blocks that came from the factory with solid lifters. Does anyone have a block handy that you can measure? I need to know the diameter of the passage that runs from front to back through the lifter bores, and whether it is drilled all the way from front to rear, or maybe from both ends without meeting in the middle? I'm considering possibly making a drilling guide to modify earlier blocks, and sleeving the bores down a few thousandths to use hydraulic lifters for a MOPAR/AMC engine. Thanks!
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!
| | | | | Joined: Feb 2004 Posts: 29,782 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,782 | Never mind- - - - - -I found a hydraulic lifter 235 block I didn't realize I had- - - - -and it looks like making a drill guide jig is going to be ridiculously simple! With a little tinkering I should be able to drill any stovebolt engine- - - -216, 235, or 261- - - -to be able to use modern, inexpensive hydraulic lifters that actually work! This idea is going to give me some real incentive to get the big radial drill press I bought some time ago into working condition!
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!
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