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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: May 2014 Posts: 44 Wrench Fetcher | | Wrench Fetcher Joined: May 2014 Posts: 44 | I am rebuilding a 62 235 engine out of a c10 to put in my 51 3100. I would like to use a 261 cam, specifically the Sealed Power cs-293 cam. It says it fits the 56-58 235 but does not list the 62. Is this just because it was not offered in the 235 in 62? Is there any reason this cam won't work. I would also use the vs424 valve springs. Can anyone tell me if sealed power offers the right lifter? I have not been able to find the part number.
I am also thinking of boring the block .040 over since the pistons are shot. Is there any benefit to milling the 848 head and if so how much?
Thanks for your help! | | | | | Joined: Aug 2012 Posts: 566 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 566 | I believe the 261 cam will work in the 235 1962 block. Just make sure you match it up with new lifters. Mine is a 56 block and i am running a stock 261 cam in mine. I am not really sure what the difference is between the 56 and 62 except the elimination of the side front motor bosses and the external oil line vrs. Internal oil line in the newer block. You might want to call Patrick's Antique Cars and Trucks in Az or the cam manufacturer To double check.
The Classic Chevy Truck Handbook written by Jim Richardson. Has some good reading about to 235 motor Talks about mailing the head and decking the block. If you take too much off your will raise the c ompression to high And you won't be able to run pump gas.
Don't know anything about the springs you are putting in.
The bad part was I found this book after I rebuilt my motor. Its still good reading material now me.
Last edited by Tiny_Jaime; 06/11/2014 4:48 AM.
"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my sweet ride." -Amen 56 Chevy 3100 | | | | | Joined: May 2014 Posts: 44 Wrench Fetcher | | Wrench Fetcher Joined: May 2014 Posts: 44 | Thanks for the info. I am getting a copy of the book and will call Patrick's also. | | | | | Joined: Dec 2001 Posts: 1,248 'Bolter | | 'Bolter Joined: Dec 2001 Posts: 1,248 | I can't see any reason it shouldn't work. I know in '59 they changed the cam profile a bit and increased the compression ratio. The engine in 1958 was rated for 145hp/210 lb/ft, in 1959-'62 it was rated 135hp/215 lb/ft. A decrease in hp, but an increase in torque. Of course this was on car engines with a hydraulic cam.
John | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Late 1954 through 1962 cams will all interchange.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: May 2014 Posts: 44 Wrench Fetcher | | Wrench Fetcher Joined: May 2014 Posts: 44 | Thanks everyone! This is what I was hoping to hear. | | |
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