BBC exhaust manifolds

[rangelec]

I have read this forum for a while-invaluable info provided for free-the internet at its best! I have been cleaning my shop and came across 3 BB exhaust manifolds-what are they from and are they of any value? 3883999, 3909879, 3989310 are the casting numbers-thanks for your help.

[Denis]

Here's what I found via web search:

3883999 L 66 396 Chevelle

3909879 L 67-70 396 or 402 Camaro, Chevelle, 68-70 Nova, 70 Monte Carlo, 69 427 / 245 HP COPO Camaro, Chevelle, 70 454 / 450 HP Chevelle

3989310 R 71-72 402 Chevelle, Camaro, Monte Carlo, 71-72 454 Chevelle, Monte Carlo, Pass