the knock could coe from a few places, if it is in fact a "knock" it could be a piston rod, if its more of a tapping comming from the top of the motor you could have a loose rocker arm, if it is a loose rocker arm i would suggest tightening them up if it stops and comes back i would replace the lifters
A 1987 Chevy Caprice Classic with the original engine does have a carb and the engine is a 305, because I have one. This can have a 307. I have an 87 Caprice Estate Wagon, with a 5.0 liter 307 olds. Which, is actually for sale.
What is the engine in the Caprice? In the Suburban? If they are a 305/350 then they can be interchanged. I have a 1985 Caprice Classic with a 305 and the tranny came out of a 1987 Suburban. It depends on the engine.
What's the color code on a 1987 Chevy Caprice classic brougham
No, after 1987 the Caprice switched from the 5x 4.75" to the 5x5"
No
Passenger side of block just above the starter
What do you want a diagram of?
Yes
go to walmart buy "lucas oil additive or "restore"
could be either
Not likely
Between 3600 and 3700 lbs.