Advertised Compression is: 2-barrel carburetor engine is--8.5:1
The 4-barrel engine is---9.2:1
probably a 3.08
red line's at 5500
Most likely a 2.29:1 ratio
8.3:1 is stock
Yes they will, but 305 heads have a smaller combustion chamber so it may raise your compression ratio.
No. It lowers the compression ratio and reduces power output.
305 - 165, 350 - 190
Who said it won't ? It will fit right in there with NO problems