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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: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | The 228 was 3 9/16 bore while the 248 was 3 23/32 bore. The rods and crank are the same. I have seen 228's bored to 248 std. I would be afraid to go oversize. A good machine shop can sonic test the cylinder walls to see how much you can bore. There are lots of 248's around. I would start out with a 248 block and then go .060 over and you know you are within limits. | | |
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