The early 71s had 9 to 1 with a 74 cc head and a 1.72 inch valve. they changed the pistons to 8.5. So if your rebuilding an early 307 and its got flat tops in it, its got 9 to 1. If you got dishes or little bowls in the pistons its got 8.5 to 1.
It means that before the compression, the volume is 71 times larger than after the compression.
Depends on the make of engine, but that sounds about normal .
There are many possibilities, but the compression ratio would need to be under 9:1
Yes get donor parts from 70 71 72 Monte Carlo will fit,,,,,brackets hoses gear box,,,changed mine to a 73 Nova works perfect ,,have a 307 small block
PointsPoints
Yes they did.
71/1000
71
first lower or remove the stering wheel.
It is (5*71) = 355 and (4*71) = 284
61:71 1:71/61
71, up until they downsized it in the 80's.