283 bored .060 over should b abour 292 cubics
A standard bore 283 was 3.875", so 60 over would be 3.935.
Sounds like a 343 to me. But for parts its a 283 bored 60 over
287.4 CI
(3.875-inch bore, 3.00-inch stroke)
A 283 ci engine that has been bored out 0.040 inches is commonly referred to as a "283 bored .040 over." This modification increases the engine's displacement slightly, enhancing its performance characteristics. The term "bored out" indicates that the cylinder bores have been enlarged to accommodate larger pistons, improving airflow and potentially increasing horsepower.
The 283 has a larger bore diameter, so use the 283 head gaskets.
4" bore, 3" stroke My 301: High-nickel content 283 (1963 Impala) block bored to 4" 283 crank (3" stroke) 302 dome-top pistons and "pink" rods 291 Camel-hump heads (unported) Pretty much 302 parts with a 283 crank/block
A 283 engine that has been bored out 0.040 inches is commonly referred to as a 283 .040 over or a 287 cubic inch engine. Boring the engine increases its displacement, allowing for improved power and performance. This modification is often done to rebuild or restore older engines, enhancing their efficiency and longevity.
A 307 is a 283 with a 327 crank. You can look up specific dimensions at mortec.com
If nothing else you can check the stroke. The 283 had a Bore & Stroke of:3.875 in × 3.00 in The 327 had a Bore & Stroke of: 4.000 in × 3.25 in Remove a Spark Plug and check the stroke. There is also a casting number located on the block that can be used to identify the block. Click the link.
No, 283 has too small a bore. The old power pack heads that came on some 283's were 202,160's, so I would think the 305 heads should work just fine. Not sure about the resulting compression ratio though. The 305 intake might be aluminum, which would be lighter than the 283 intake.
Expressed as a percentage, 283/1420 x 100 = 19.93 percent.
It is 23, 191 over 283.