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| | | Forums66 Topics128,032 Posts1,055,438 Members48,422 | | Most Online14,466
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: Apr 2013 Posts: 54 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2013 Posts: 54 | I have 57 235 with an 848 head. Is a 61 235 head a direct fit replacement or do l need to make modifications. Thinking about rebuilding the 61 head an installing it on the 57 engine | | | | | Joined: Dec 2000 Posts: 3,399 Gas Pumper | | Gas Pumper Joined: Dec 2000 Posts: 3,399 | They are the same. If the number is 848, thats the last three of the actual casting (part) number. As long as you are installing it on a 235 engine, you are good to go. Do not mix and match the rocker assembly. If the oil tubes across the rockers are worn on one, do not just change the tubes, change everything at once. | | | | | Joined: Apr 2013 Posts: 54 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2013 Posts: 54 | Thanks Dave and by the way your 1959 235 project is great | | | | | Joined: Apr 2013 Posts: 54 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2013 Posts: 54 | Deve 57 block has a oil line in the side where the lifters are the 61 doesn't. Should I use the head bolt with the oil slot from the 61 or use the bolt w/o from the 57. Also is there any other things I should do. Trying to get it back together this weekend | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | A 1957 235 should not need any drilled or slotted head bolts as long as all the oil passages are clean.
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