Hi All,
New member here.

My current project is a 1985 GMC 1/2 ton 2 WD. Super nice, rust free truck.

I've got 3 SBC engines in stock.

Block: 3970010
Heads: 397487
Appears to be a 350

Block: 3914660
Heads: 3947040
Appears to be a 327

Block: 3970010
Heads: 3932441
Also looks like a 350 pistons stamped .040 so its 40 over making it something like 357 CI

Any thoughts on which combination of these would be best for a mid range RPM daily driver would be very much appreciated.

Trans will be a 700R4

Rear ratio is 3.08

Thanks in advance.