Big Block C1
Sorry for lack of responses, have been busy, retiring soon, will have time.....
I did not own this car up until recently, although I know the previous owner and can discuss and get some details.
The X frame was removed and standard chevy engine mounts welded to the frame. This way there is lots of room. The Corvette frame is probably overly designed back in those days. The previous owner advises that the car ran 11 flat with a four speed at 126 mph back many years ago, when this was relatively fast. Would carry the front wheels. Was fairly simple arrangement with a twelve bolt and pinion snubber. No roll bar, no electronics or transmission brakes, just a helmet and go.
For drag racing a big block with cubic inches is great. For street, just a headache.
This car is now on the street with a small block and is not street raced. For street don't need more than a small block. Plenty of power, less weight on the front, less of a cooling problem, less heat.
Attached is a picture of the car as it sits today.