I'm in the middle of a '50 Chevy gasser build and looking to build a budget 327/350 engine to run with for the summer. I have an abundance of engine parts and mostly everything needed to put this thing together is in my garage somewhere. Either way all heads are in the same condition and need valve stem seals. All the blocks need cleanups and rebuilds. I'm just having trouble in my head figuring out what to build to keep this car looking like it should and getting as much power as possible out of it. My main concern is which block and which set of heads to use. Here's what I have in the shop: '68 327 complete full rotating assembly (2) good 010 350 blocks full rotating assembly complete 350 out of a '91 9C1 police package cop car. (great for nothing) but could use the short block, it does have the hole on the side for a machanical fuel pump. '68 327 / "290" heads 1.72 valves and 68cc plenty of "882" heads, best ones have 1.72 valves 76cc Good flowing set of "081" 1.84 valve 58cc heads but they are center bolts So.. the 327 is correct for the time period but not great heads and low displacement engine. The center bolt heads will look like ass but will give best hp and tq by building a high comp engine. Do I use them and buy the adapters to run perimeter valve covers and bolt to the top of one of the 010 blocks? Or 327 heads on top of one of the 010 blocks?