There should be a cap on the top of 1 of the valve covers, remove it and put oil in there.
it comes with the 350, You can supercharge that or put in a twin board 440, mab even a V8
Yes
5 quarts.
Drain the oil from your 2000 Chevy Impala oil pan. Remove the oil pan retaining bolts. Remove the old oil pan gasket and clean the surface. Put the new oil pan gasket on and reverse the process.
Should bolt right up... that motor didn't change for 40 years.
Chevy already put the 5.3 Liter V8 in the Impala in 2006. It makes 303 H.P. Putting a 5.7 could be done, but the expense would be great. I would just look for a factory V8.
1.8 quarts
Yes. You'll need to change the exhaust and cooling systems.
10w30
Pre 1985
Where do I put freon in a 2007 chevy impala
About 2.5 Quarts of 10w 40 wet clutch oil.