318 value

i pulled the motor+tranny out of my bcuda yesterday. Its got a 67 318 with 68-74 heads..and a 904 trans. what is this worth?, and how i can i tell if its been rebuilt

'68-'74 heads is a good indicator that it's been apart at least once. Pull the oil pan and check the parting line on the crank. If it is sharp, narrow, and well defined, it is a cast crank and those didn't show up in 318s until 1973.