Originally Posted by starnest
OK - you've got 70 307 heads (small valve, 69CC) on a 67 327 block. It'll work fine for just cruising around. If everything checks out, I would replace the flex plate and put it in the car. If you have problems after that, you could rebuild it and with a few improvements make a hot little 327 with the right heads and cam.
My Vote is for this also!!
While the engine is out check all gaskets and fix all the oil leaks, and maybe replace the freeze plugs in back of the flex plate "If they show signs of rust"
Replace the flex plate front balancer,.................... and maybe look at replacing the transmission with a 700R4 and drive the car like you stole it. until there is a major breakdown. then you can rebuild or replace as the dollars dictate.
What is the condition of the rest of the car?