[Jays76bird]

I am looking at Pontiac 400 block that is out a 77 that is for sale. A couple hundred is the price. I have a 74 350 that came with my 76 Formula and is out of the car. The issue with the 350 as you know is availability of pistons. Plus it is a smaller motor. Just thoughts on the later 400 as I know the block is weaker. I have a set of big valve 16 heads and I was planning on a street motor for the car. I see the piston selection is much larger for the 400. This car is basically going to be a street cruiser with 3:23 gears and I plan on having the A/C working and all. Wonder some thoughts from you more experienced guys on the 400 ?