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)
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 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.
Expressed as a percentage, 283/1420 x 100 = 19.93 percent.
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.
It is 23, 191 over 283.
You have to find a 283 SBC and bore it .125 over, you must find the 283's with thicker walls to allow for a 4" stroke, the later models arent think enough for that size bore. Next you need a 327 small journal crankshaft, with 11:1 pistons. A solid roller cam because a hydraulic cam with float at 8k rpm and crush a rod. Im not a pro, im building one myself but thats just how my dad and his friends built them back in the day, hot rodders were doing it way before chevy manufactured the dz302 they saw people doing it and figured theyd add an extra cube.
283 SBC Corvette