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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!
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| | | | Joined: Dec 2006 Posts: 6 New Guy | | New Guy Joined: Dec 2006 Posts: 6 | Guys you have save me lots of work by reading your posts. And I thank you all. So heres the scope, I have been trying to get my 235 to pump oil to the valve train and no matter what I do I cant seem to get any oil up there. I read that the 55-62 235 blocks pass oil through the oil passage intergrated in the casting located in the pushrod area. And that when a 53 cylinder head is used there is a special head bolt used to allow oil to pass. I have checked all my head bolts and I dont have that special head bolt. So the first problem to solve is where can I get that Special Head Bolt? SO today I decided to take that head bolt out and spin the oil pump with my drill. Still no oil. The valve train is removed, the oil connector port is open, and when I spin my oil pump I get 50lbs on my oil guage. PLEASE HELP
I work & work & Work and I still cant afford it!
'50 3100 5 window ( under construction)
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Some information about the special bolt is at the bottom of this page. Click on the link about the bolt and it will bring back to a Stovebolt.com posting. If Pre '68 Dave does not post a response, you could try a Private Message to him. | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | tclederman's link explains it well, except it seems to say there is a difference in the head which there is not.
What year engine are you working on? It may be missing the supply tube under the side cover.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Dec 2006 Posts: 6 New Guy | | New Guy Joined: Dec 2006 Posts: 6 | Im using a 60-62 block with 53 head accoring to the casting numbers
I work & work & Work and I still cant afford it!
'50 3100 5 window ( under construction)
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Dave,
Thanks for the correction. I hope the pages are now correct. If not, please let me know.
Tim | | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | I am probably wrong, but I thought that year engine had no supply tube. The block itself was cast with supply routes that fed the center oiler from both front and rear cam bearings. This route took it though a drilled orifice that is situated beneath the head bolt.
Stuart | | | | | Joined: Dec 2006 Posts: 6 New Guy | | New Guy Joined: Dec 2006 Posts: 6 | Guys, thanks for all the information, My OCD kicked in about an hour ago and I tore it down. Low and behold what did I find but the wrong lifters in it. so I was not passing any oil past that first lifter. So now Im in the market for a set of correct lifters for a 60-62 235. I now know why I had the rocker shafts wear out
I work & work & Work and I still cant afford it!
'50 3100 5 window ( under construction)
| | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | I now know why I had the rocker shafts wear out Funny how that works isn't it. 
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