It depends on if your looking to find a 1967 engine, matching #s and the size. You can easily get a GM crate v-8 for around $3,000 that made more than the original engine.
What year, what size engine? 2004-2008 Chevy impala
Either a 3.4 or 3.8 V6
Any smallblock Chevy engine will physically "fit" into a 85 Impala
check the engine block casting number
need to know what engine size and year 3.5L 2006
You bet you can. Click the link then click the appropriate engine size.
The 2011 Chevrolet Impala has a V6 engine.
The 2001 Chevrolet Impala has a V6 engine.
The 2005 Chevrolet Impala has a V6 engine.
The 2008 Chevrolet Impala has a V6 engine.
The 2009 Chevrolet Impala has a V6 engine.